Seat Assemblies Page 1A7–1

Page 1A7–1

Section 1A7

Seat Assemblies

ATTENTION

Before performing any service operation or other procedure described in this Section, refer to Section 00

Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.

1 General Information .............................................................................................................................18

1.1 Front Seat General Description.......................................................................................................................... 18

Seat Covers.......................................................................................................................................................... 19

Electric Seat Operation ....................................................................................................................................... 19

Raise/Lower Movement.................................................................................................................................... 19

Fore/Aft Movement........................................................................................................................................... 19

Recline Movement............................................................................................................................................ 20

Four-way Movement Control............................................................................................................................ 20

Eight-way Movement Control ........................................................................................................................... 20

Memory Seat Position System ......................................................................................................................... 21

Priority Keys (Level 3 Vehicles Only) ............................................................................................................... 21

Memory Buttons............................................................................................................................................... 22

Using the Exterior Mirrors................................................................................................................................. 22

EZ-entry System, Coupe.................................................................................................................................. 23

Active Head Restraints........................................................................................................................................ 24

1.2 Rear Seat General Description ........................................................................................................................... 25

Sedan.................................................................................................................................................................... 25

Wagon................................................................................................................................................................... 25

Crew Cab .............................................................................................................................................................. 25

Coupe.................................................................................................................................................................... 25

Seat Covers.......................................................................................................................................................... 25

2 Diagnostics – Front Seat, Non-memo ry, Except Coupe...................................................................26

2.1 Prerequisites........................................................................................................................................................ 26

Safety Requirements ........................................................................................................................................... 26

Equipment ............................................................................................................................................................ 26

Testing Procedures ............................................................................................................................................. 26

2.2 Mechanical Diagnosis – Two-Way/Four-Way Seat............................................................................................ 27

Lumbar Support Inoperative............................................................................................................................... 27

Introduction ...................................................................................................................................................... 27

Test Description ............................................................................................................................................... 27

Diagnostic Table............................................................................................................................................... 27

Seat Recline Forward and/or Back Function is Inoperative............................................................................. 28

Introduction ...................................................................................................................................................... 28

Test Description ............................................................................................................................................... 28

Diagnostic Table............................................................................................................................................... 28

Seat Fore/Aft Movement Function is Inoperative or is Not Smooth................................................................ 28

Introduction ...................................................................................................................................................... 28

Test Description ............................................................................................................................................... 28

Diagnostic Table............................................................................................................................................... 28

Techline

Seat Assemblies Page 1A7–2

Page 1A7–2

2.3 Electrical Diagnosis – Four-way Driver’s Seat, Except Reg Cab and Utility................................................... 29

Wiring Diagram – Four-way Driver’s Seat, Except Reg Cab and Utility .......................................................... 29

Connector Chart – Four-way Driver’s Seat, Except Reg Cab and Utility ........................................................ 29

None of the Driver’s Seat Adjustment Switch Functions Operate...................................................................30

Introduction ...................................................................................................................................................... 30

Test Description ............................................................................................................................................... 30

Diagnostic Table Notes .................................................................................................................................... 30

Diagnostic Table............................................................................................................................................... 31

Front/Rear of the Driver's Seat Does Not Raise and/or Lower......................................................................... 33

Introduction ...................................................................................................................................................... 33

Test Description ............................................................................................................................................... 33

Diagnostic Table Notes .................................................................................................................................... 33

Diagnostic Table............................................................................................................................................... 34

2.4 Electrical Diagnosis – Four-way Driver’s Seat, Reg Cab and Utility ............................................................... 35

Wiring Diagram – Four-way Driver’s Seat, Reg Cab and Utility....................................................................... 35

Connector Chart – Four-way Driver’s Seat, Reg Cab and Utility..................................................................... 35

None of the Driver’s Seat Adjustment Switch Functions Operate...................................................................36

Introduction ...................................................................................................................................................... 36

Test Description ............................................................................................................................................... 36

Diagnostic Table Notes .................................................................................................................................... 36

Diagnostic Table............................................................................................................................................... 37

Front/Rear of the Driver's Seat Does Not Raise and/or Lower......................................................................... 39

Introduction ...................................................................................................................................................... 39

Test Description ............................................................................................................................................... 39

Diagnostic Table Notes .................................................................................................................................... 39

Diagnostic Table............................................................................................................................................... 40

2.5 Four-way Seat Adjustment Switch Test............................................................................................................. 41

Test ....................................................................................................................................................................... 41

2.6 Electrical Diagnosis – Eight-way Passenger’s Seat ......................................................................................... 42

Wiring Diagram – Eight-way Passenger’s Seat................................................................................................. 42

Connector Chart – Eight-way Passenger’s Seat............................................................................................... 43

Neither Seat Adjustment Switch Functions Operate........................................................................................ 44

Introduction ...................................................................................................................................................... 44

Test Description ............................................................................................................................................... 44

Diagnostic Table Notes .................................................................................................................................... 44

Diagnostic Table............................................................................................................................................... 45

None of the Passenger’s Seat Adjustment Switch Functions Operate........................................................... 46

Introduction ...................................................................................................................................................... 46

Test Description ............................................................................................................................................... 46

Diagnostic Table Notes .................................................................................................................................... 46

Diagnostic Table............................................................................................................................................... 47

Front/Rear of the Passenger’s Seat Does Not Raise and/or Lower................................................................. 48

Introduction ...................................................................................................................................................... 48

Test Description ............................................................................................................................................... 48

Diagnostic Table Notes .................................................................................................................................... 48

Diagnostic Table............................................................................................................................................... 49

Passenger’s Seat Fore/Aft Movement Function is Inoperative or Not Smooth.............................................. 50

Introduction ...................................................................................................................................................... 50

Test Description ............................................................................................................................................... 50

Diagnostic Table Notes .................................................................................................................................... 50

Diagnostic Table............................................................................................................................................... 51

Passenger’s Seat Recline Forward and/or Aft Function is Inoperative .......................................................... 52

Introduction ...................................................................................................................................................... 52

Test Description ............................................................................................................................................... 52

Diagnostic Table Notes .................................................................................................................................... 52

Diagnostic Table............................................................................................................................................... 53

2.7 Eight-way Seat Adjustment Switch Test............................................................................................................ 54

Test ....................................................................................................................................................................... 54

Seat Assemblies Page 1A7–3

Page 1A7–3

3 Diagnostics – Front Seat, Memory and Rear-v ie w Mirror, Except Coupe......................................55

3.1 Prerequisites........................................................................................................................................................ 55

Safety Requirements ........................................................................................................................................... 55

Equipment ............................................................................................................................................................ 55

Testing Procedures ............................................................................................................................................. 55

3.2 System Self Diagnosis ........................................................................................................................................ 56

Current DTCs........................................................................................................................................................ 56

History DTCs........................................................................................................................................................ 56

Clearing DTCs...................................................................................................................................................... 56

3.3 Tech 2 Diagnostics.............................................................................................................................................. 57

Test Modes........................................................................................................................................................... 57

Mode F0: Diagnostic Trouble Codes................................................................................................................ 57

Mode F1: Diagnostic Data Display................................................................................................................... 57

Mode F2: Snapshot.......................................................................................................................................... 57

Mode F3: Miscellaneous Tests......................................................................................................................... 57

Mode F4: Additional Functions......................................................................................................................... 57

3.4 Tech 2 Test Modes and Displays for Diagnosis................................................................................................ 58

System Select Menu............................................................................................................................................ 58

Body Application Menu....................................................................................................................................... 58

System Identification........................................................................................................................................... 58

Application Menu................................................................................................................................................. 58

F0: Diagnostic Trouble Codes............................................................................................................................ 59

F0: Read DTC Information ............................................................................................................................... 59

F1: Clear DTC Information ............................................................................................................................... 59

Diagnostic Trouble Codes................................................................................................................................... 59

F1: Diagnostic Data Display................................................................................................................................ 60

F0: Inputs and Outputs..................................................................................................................................... 60

F1: Memory...................................................................................................................................................... 63

F2: System Identification.................................................................................................................................. 64

F2: Snapshot........................................................................................................................................................ 65

F3: Miscellaneous Tests...................................................................................................................................... 65

F0: Chime......................................................................................................................................................... 65

F1: LED............................................................................................................................................................ 65

F2: Right Exterior Mirror................................................................................................................................... 65

F3: Left Exterior Mirror ..................................................................................................................................... 65

F4: Front Vertical Motor.................................................................................................................................... 65

F5: Rear Vertical Mirror.................................................................................................................................... 65

F6: Horizontal Motor......................................................................................................................................... 65

F7: Recline Motor............................................................................................................................................. 65

F4: Additional Functions..................................................................................................................................... 65

F0: Module Reset............................................................................................................................................. 65

3.5 Preliminary System Diagnosis............................................................................................................................ 66

3.6 Diagnostic Tables................................................................................................................................................ 67

Introduction.......................................................................................................................................................... 67

3.7 Mechanical Diagnosis ......................................................................................................................................... 68

Lumbar Support Inoperative............................................................................................................................... 68

Introduction ...................................................................................................................................................... 68

Test Description ............................................................................................................................................... 68

Diagnostic Table............................................................................................................................................... 68

Seat Assemblies Page 1A7–4

Page 1A7–4

3.8 Electrical Diagnosis – Memory Seat................................................................................................................... 69

Wiring Diagram – Memory Seat.......................................................................................................................... 69

Connector Chart – Memory Seat ........................................................................................................................ 71

Initial Check.......................................................................................................................................................... 72

Introduction ...................................................................................................................................................... 72

Test Description ............................................................................................................................................... 72

Diagnostic Table............................................................................................................................................... 73

No Serial Data Communications to the Seat Memory Module.........................................................................78

Introduction ...................................................................................................................................................... 78

Test Description ............................................................................................................................................... 78

Diagnostic Table Notes .................................................................................................................................... 78

Diagnostic Table............................................................................................................................................... 79

Seat Adjustment Switch Inoperative.................................................................................................................. 80

Introduction ...................................................................................................................................................... 80

Test Description ............................................................................................................................................... 80

Diagnostic Table Notes .................................................................................................................................... 80

Diagnostic Table............................................................................................................................................... 81

Seat Front Lift Motor Inoperative ........................................................................................................................ 82

Introduction ...................................................................................................................................................... 82

Test Description ............................................................................................................................................... 82

Diagnostic Table Notes .................................................................................................................................... 82

Diagnostic Table............................................................................................................................................... 82

Seat Rear Lift Motor Inoperative......................................................................................................................... 83

Introduction ...................................................................................................................................................... 83

Test Description ............................................................................................................................................... 83

Diagnostic Table Notes .................................................................................................................................... 83

Diagnostic Table............................................................................................................................................... 83

Seat Fore/Aft Movement Motor Inoperative....................................................................................................... 84

Introduction ...................................................................................................................................................... 84

Test Description ............................................................................................................................................... 84

Diagnostic Table Notes .................................................................................................................................... 84

Diagnostic Table............................................................................................................................................... 84

Seat-back Recline Motor Inoperative ................................................................................................................. 85

Introduction ...................................................................................................................................................... 85

Test Description ............................................................................................................................................... 85

Diagnostic Table Notes .................................................................................................................................... 85

Diagnostic Table............................................................................................................................................... 86

Memory Position Switch Inoperative ................................................................................................................. 87

Introduction ...................................................................................................................................................... 87

Test Description ............................................................................................................................................... 87

Diagnostic Table Notes .................................................................................................................................... 87

Diagnostic Table............................................................................................................................................... 87

Seat Front Lift Motor Hall-effect Sensor Check................................................................................................. 88

Introduction ...................................................................................................................................................... 88

Test Description ............................................................................................................................................... 88

Diagnostic Table Notes .................................................................................................................................... 88

Diagnostic Table............................................................................................................................................... 88

Seat Rear Lift Motor Hall-effect Sensor Check.................................................................................................. 89

Introduction ...................................................................................................................................................... 89

Test Description ............................................................................................................................................... 89

Diagnostic Table Notes .................................................................................................................................... 89

Diagnostic Table............................................................................................................................................... 89

Seat Fore/Aft Movement Motor Hall-effect Sensor Check................................................................................ 90

Introduction ...................................................................................................................................................... 90

Test Description ............................................................................................................................................... 90

Diagnostic Table Notes .................................................................................................................................... 90

Diagnostic Table............................................................................................................................................... 90

Seat Assemblies Page 1A7–5

Page 1A7–5

Seat-back Recline Motor Hall-effect Sensor Check.......................................................................................... 91

Introduction ...................................................................................................................................................... 91

Test Description ............................................................................................................................................... 91

Diagnostic Table Notes .................................................................................................................................... 91

Diagnostic Table............................................................................................................................................... 91

Priority Key Feature Inoperative......................................................................................................................... 92

Introduction ...................................................................................................................................................... 92

Test Description ............................................................................................................................................... 92

Diagnostic Table Notes .................................................................................................................................... 92

Diagnostic Table............................................................................................................................................... 92

DTC 1 – Front Vertical Up Switch Stuck ............................................................................................................ 93

Introduction ...................................................................................................................................................... 93

Test Description ............................................................................................................................................... 93

Diagnostic Table Notes .................................................................................................................................... 93

Diagnostic Table............................................................................................................................................... 93

DTC 2 – Front Vertical Down Switch Stuck........................................................................................................ 94

Introduction ...................................................................................................................................................... 94

Test Description ............................................................................................................................................... 94

Diagnostic Table Notes .................................................................................................................................... 94

Diagnostic Table............................................................................................................................................... 94

DTC 3 – Rear Vertical Up Switch Stuck.............................................................................................................. 95

Introduction ...................................................................................................................................................... 95

Test Description ............................................................................................................................................... 95

Diagnostic Table Notes .................................................................................................................................... 95

Diagnostic Table............................................................................................................................................... 95

DTC 4 – Rear Vertical Down Switch Stuck......................................................................................................... 96

Introduction ...................................................................................................................................................... 96

Test Description ............................................................................................................................................... 96

Diagnostic Table Notes .................................................................................................................................... 96

Diagnostic Table............................................................................................................................................... 96

DTC 5 – Horizontal Forward Switch Stuck......................................................................................................... 97

Introduction ...................................................................................................................................................... 97

Test Description ............................................................................................................................................... 97

Diagnostic Table Notes .................................................................................................................................... 97

Diagnostic Table............................................................................................................................................... 97

DTC 6 – Horizontal Back Switch Stuck .............................................................................................................. 98

Introduction ...................................................................................................................................................... 98

Test Description ............................................................................................................................................... 98

Diagnostic Table Notes .................................................................................................................................... 98

Diagnostic Table............................................................................................................................................... 98

DTC 7 – Recline Up Switch Stuck....................................................................................................................... 99

Introduction ...................................................................................................................................................... 99

Test Description ............................................................................................................................................... 99

Diagnostic Table Notes .................................................................................................................................... 99

Diagnostic Table............................................................................................................................................... 99

DTC 8 – Recline Down Switch Stuck................................................................................................................ 100

Introduction .................................................................................................................................................... 100

Test Description ............................................................................................................................................. 100

Diagnostic Table Notes .................................................................................................................................. 100

Diagnostic Table............................................................................................................................................. 100

DTC 9 – Memory Button 1 Stuck....................................................................................................................... 101

Introduction .................................................................................................................................................... 101

Test Description ............................................................................................................................................. 101

Diagnostic Table Notes .................................................................................................................................. 101

Diagnostic Table............................................................................................................................................. 101

DTC 10 – Memory Button 2 Stuck..................................................................................................................... 102

Introduction .................................................................................................................................................... 102

Test Description ............................................................................................................................................. 102

Diagnostic Table Notes .................................................................................................................................. 102

Diagnostic Table............................................................................................................................................. 102

Seat Assemblies Page 1A7–6

Page 1A7–6

DTC 11 – Memory Button 3 Stuck..................................................................................................................... 103

Introduction .................................................................................................................................................... 103

Test Description ............................................................................................................................................. 103

Diagnostic Table Notes .................................................................................................................................. 103

Diagnostic Table............................................................................................................................................. 103

DTC 12 – Mirror DIP Button Stuck.................................................................................................................... 104

Introduction .................................................................................................................................................... 104

Test Description ............................................................................................................................................. 104

Diagnostic Table Notes .................................................................................................................................. 104

Diagnostic Table............................................................................................................................................. 104

DTC 13 – No Serial Data .................................................................................................................................... 105

DTC 14 – No Exterior Mirror Communications................................................................................................ 105

DTC 20 – Front Vertical Position Sensor Fault................................................................................................ 105

DTC 21 – Rear Vertical Position Sensor Fault................................................................................................. 105

DTC 22 – Horizontal Position Sensor Fault ..................................................................................................... 105

DTC 23 – Recline Position Sensor Fault.......................................................................................................... 105

DTC 24 – System Voltage Out of Range .......................................................................................................... 105

3.9 Memory Position Switch Test........................................................................................................................... 106

Remove............................................................................................................................................................... 106

Reinstall.............................................................................................................................................................. 106

Test ..................................................................................................................................................................... 106

3.10 Electrical Diagnosis – Rear-view Mirrors......................................................................................................... 107

Wiring Diagram – Rear-view Mirrors................................................................................................................ 107

Connector Chart – Rear-view Mirrors .............................................................................................................. 108

Initial Check........................................................................................................................................................ 109

Introduction .................................................................................................................................................... 109

Test Description ............................................................................................................................................. 109

Diagnostic Table............................................................................................................................................. 110

Mirror Dip Function Check................................................................................................................................ 112

Introduction .................................................................................................................................................... 112

Test Description ............................................................................................................................................. 112

Diagnostic Table............................................................................................................................................. 112

Mirror Heating Function Check......................................................................................................................... 113

Introduction .................................................................................................................................................... 113

Test Description ............................................................................................................................................. 113

Diagnostic Table............................................................................................................................................. 113

No Serial Data from Exterior Rear-view Mirrors.............................................................................................. 114

Introduction .................................................................................................................................................... 114

Test Description ............................................................................................................................................. 114

Diagnostic Table Notes .................................................................................................................................. 114

Diagnostic Table............................................................................................................................................. 115

No Serial Data – Right-hand Exterior Rear-view Mirror.................................................................................. 116

Introduction .................................................................................................................................................... 116

Test Description ............................................................................................................................................. 116

Diagnostic Table Notes .................................................................................................................................. 116

Diagnostic Table............................................................................................................................................. 116

No Serial Data – Left-hand Exterior Rear-view Mirror..................................................................................... 117

Introduction .................................................................................................................................................... 117

Test Description ............................................................................................................................................. 117

Diagnostic Table Notes .................................................................................................................................. 117

Diagnostic Table............................................................................................................................................. 117

Mirror Control Switch Inoperative.................................................................................................................... 118

Introduction .................................................................................................................................................... 118

Test Description ............................................................................................................................................. 118

Diagnostic Table Notes .................................................................................................................................. 118

Diagnostic Table............................................................................................................................................. 119

Seat Assemblies Page 1A7–7

Page 1A7–7

4 Diagnostics – Front Seat, Coupe......................................................................................................120

4.1 Prerequisites...................................................................................................................................................... 120

Safety Requirements ......................................................................................................................................... 120

Equipment .......................................................................................................................................................... 120

Testing Procedures ........................................................................................................................................... 120

4.2 Mechanical Diagnosis ....................................................................................................................................... 121

Lumbar Support Inoperative............................................................................................................................. 121

Introduction .................................................................................................................................................... 121

Test Description ............................................................................................................................................. 121

Diagnostic Table............................................................................................................................................. 121

EZ-entry Lever Function Inoperative................................................................................................................ 122

Introduction .................................................................................................................................................... 122

Test Description ............................................................................................................................................. 122

Diagnostic Table............................................................................................................................................. 122

4.3 Electrical Diagnosis – Eight-way Seat, Non-memory ..................................................................................... 123

Neither Seat Adjustment Switch Functions Operate...................................................................................... 123

Introduction .................................................................................................................................................... 123

Circuit Description.......................................................................................................................................... 123

Test Description ............................................................................................................................................. 123

Diagnostic Table Notes .................................................................................................................................. 123

Diagnostic Table............................................................................................................................................. 124

EZ-entry Electrical Self Test Diagnosis – Eight-way Seat, Non-Memory ...................................................... 125

Introduction .................................................................................................................................................... 125

4.4 Electrical Diagnosis – Passenger's Seat ......................................................................................................... 126

Wiring Diagram – Passenger's Seat, Coupe.................................................................................................... 127

Connector Chart – Passenger's Seat, Coupe.................................................................................................. 128

None of the Passenger’s Seat Adjustment Switch Functions Operate......................................................... 129

Introduction .................................................................................................................................................... 129

Circuit Description.......................................................................................................................................... 129

Test Description ............................................................................................................................................. 129

Diagnostic Table Notes .................................................................................................................................. 129

Diagnostic Table............................................................................................................................................. 130

Front/Rear of the Passenger’s Seat Does Not Raise and/or Lower............................................................... 132

Introduction .................................................................................................................................................... 132

Circuit Description.......................................................................................................................................... 132

Test Description ............................................................................................................................................. 132

Diagnostic Table Notes .................................................................................................................................. 132

Diagnostic Table............................................................................................................................................. 133

Passenger’s Seat Fore/Aft Movement Function is Inoperative or Not Smooth............................................ 134

Introduction .................................................................................................................................................... 134

Circuit Description.......................................................................................................................................... 134

Test Description ............................................................................................................................................. 134

Diagnostic Table Notes .................................................................................................................................. 134

Diagnostic Table............................................................................................................................................. 135

Passenger's Seat Recline Forward and/or Aft Function is Inoperative......................................................... 137

Introduction .................................................................................................................................................... 137

Circuit Description.......................................................................................................................................... 137

Test Description ............................................................................................................................................. 137

Diagnostic Table Notes .................................................................................................................................. 137

Diagnostic Table............................................................................................................................................. 138

Passenger's Seat EZ-entry Switch Function is Inoperative........................................................................... 139

Introduction .................................................................................................................................................... 139

Circuit Description.......................................................................................................................................... 139

Test Description ............................................................................................................................................. 139

Diagnostic Table Notes .................................................................................................................................. 139

Diagnostic Table............................................................................................................................................. 139

Seat Assemblies Page 1A7–8

Page 1A7–8

Passenger's Seat Return Switch Function is Inoperative .............................................................................. 140

Introduction .................................................................................................................................................... 140

Circuit Description.......................................................................................................................................... 140

Test Description ............................................................................................................................................. 140

Diagnostic Table Notes .................................................................................................................................. 140

Diagnostic Table............................................................................................................................................. 141

Passenger's Seat Fore/Aft Movement Motor Hall-effect Sensor Test ........................................................... 142

Introduction .................................................................................................................................................... 142

Circuit Description.......................................................................................................................................... 142

Test Description ............................................................................................................................................. 142

Diagnostic Table Notes .................................................................................................................................. 142

Diagnostic Table............................................................................................................................................. 142

Passenger's Seat Passenger Presence Detection Switch Test ..................................................................... 143

Introduction .................................................................................................................................................... 143

Circuit Description.......................................................................................................................................... 143

Test Description ............................................................................................................................................. 143

Diagnostic Table Notes .................................................................................................................................. 143

Diagnostic Table............................................................................................................................................. 143

4.5 Electrical Diagnosis – Eight-way Seat, Memory.............................................................................................. 144

Neither Seat Adjustment Switch Functions Operate...................................................................................... 144

Introduction .................................................................................................................................................... 144

Circuit Description.......................................................................................................................................... 144

Test Description ............................................................................................................................................. 144

Diagnostic Table Notes .................................................................................................................................. 144

Diagnostic Table............................................................................................................................................. 145

EZ-entry and Memory Self Test Diagnosis ...................................................................................................... 146

Introduction .................................................................................................................................................... 146

4.6 Electrical Diagnosis – Driver's Seat................................................................................................................. 147

Wiring Diagram – Driver's Seat......................................................................................................................... 148

Connector Chart – Driver's Seat....................................................................................................................... 150

None of the Driver’s Seat Adjustment Switch Functions Operate................................................................. 151

Introduction .................................................................................................................................................... 151

Circuit Description.......................................................................................................................................... 151

Test Description ............................................................................................................................................. 151

Diagnostic Table Notes .................................................................................................................................. 151

Diagnostic Table............................................................................................................................................. 152

Front/Rear of the Driver’s Seat Does Not Raise and/or Lower....................................................................... 154

Introduction .................................................................................................................................................... 154

Circuit Description.......................................................................................................................................... 154

Test Description ............................................................................................................................................. 154

Diagnostic Table Notes .................................................................................................................................. 154

Diagnostic Table............................................................................................................................................. 155

Driver’s Seat Fore/Aft Movement Function is Inoperative or Not Smooth.................................................... 157

Introduction .................................................................................................................................................... 157

Circuit Description.......................................................................................................................................... 157

Test Description ............................................................................................................................................. 157

Diagnostic Table Notes .................................................................................................................................. 157

Diagnostic Table............................................................................................................................................. 158

Driver’s Seat Recline Forward and/or Aft Function is Inoperative................................................................ 160

Introduction .................................................................................................................................................... 160

Circuit Description.......................................................................................................................................... 160

Test Description ............................................................................................................................................. 160

Diagnostic Table Notes .................................................................................................................................. 160

Diagnostic Table............................................................................................................................................. 161

Driver's Seat EZ-entry Switch Function is Inoperative................................................................................... 163

Introduction .................................................................................................................................................... 163

Circuit Description.......................................................................................................................................... 163

Test Description ............................................................................................................................................. 163

Diagnostic Table Notes .................................................................................................................................. 163

Diagnostic Table............................................................................................................................................. 164

Seat Assemblies Page 1A7–9

Page 1A7–9

Driver's Seat Return Switch Function is Inoperative...................................................................................... 165

Introduction .................................................................................................................................................... 165

Circuit Description.......................................................................................................................................... 165

Test Description ............................................................................................................................................. 165

Diagnostic Table Notes .................................................................................................................................. 165

Diagnostic Table............................................................................................................................................. 166

Driver's Seat Fore/Aft Movement Motor Hall-effect Sensor Test................................................................... 167

Introduction .................................................................................................................................................... 167

Circuit Description.......................................................................................................................................... 167

Test Description ............................................................................................................................................. 167

Diagnostic Table Notes .................................................................................................................................. 167

Diagnostic Table............................................................................................................................................. 167

Driver's Seat-back Recline Motor Hall-effect Sensor Test ............................................................................. 168

Introduction .................................................................................................................................................... 168

Circuit Description.......................................................................................................................................... 168

Test Description ............................................................................................................................................. 168

Diagnostic Table Notes .................................................................................................................................. 168

Diagnostic Table............................................................................................................................................. 168

Driver's Seat Front Lift Motor Hall-effect Sensor Test.................................................................................... 169

Introduction .................................................................................................................................................... 169

Circuit Description.......................................................................................................................................... 169

Test Description ............................................................................................................................................. 169

Diagnostic Table Notes .................................................................................................................................. 169

Diagnostic Table............................................................................................................................................. 169

Driver's Seat Rear Lift Motor Hall-effect Sensor Test..................................................................................... 170

Introduction .................................................................................................................................................... 170

Circuit Description.......................................................................................................................................... 170

Test Description ............................................................................................................................................. 170

Diagnostic Table Notes .................................................................................................................................. 170

Diagnostic Table............................................................................................................................................. 170

Driver's Seat Passenger Presence Detection Switch Test............................................................................. 171

Introduction .................................................................................................................................................... 171

Circuit Description.......................................................................................................................................... 171

Test Description ............................................................................................................................................. 171

Diagnostic Table Notes .................................................................................................................................. 171

Diagnostic Table............................................................................................................................................. 171

Driver's Seat Memory Position Switch Test .................................................................................................... 172

Introduction .................................................................................................................................................... 172

Circuit Description.......................................................................................................................................... 172

Test Description ............................................................................................................................................. 172

Diagnostic Table Notes .................................................................................................................................. 172

Diagnostic Table............................................................................................................................................. 173

5 Service Operations – Front Seat, Except Regular Cab, Utility and Coupe...................................174

5.1 Usage Chart........................................................................................................................................................ 174

How to Use this Chart........................................................................................................................................ 174

Front Seat Type 1............................................................................................................................................... 176

Front Seat Type 2............................................................................................................................................... 178

Front Seat Type 3............................................................................................................................................... 180

Front Seat Type 4............................................................................................................................................... 182

Front Seat Type 5............................................................................................................................................... 184

Front Seat Type 6............................................................................................................................................... 186

Front Seat Type 7............................................................................................................................................... 188

Front Seat Type 8............................................................................................................................................... 190

Front Seat Type 9............................................................................................................................................... 192

Front Seat Type 10............................................................................................................................................. 194

Front Seat Type 11............................................................................................................................................. 196

Front Seat Type 12............................................................................................................................................. 198

Seat Assemblies Page 1A7–10

Page 1A7–10

5.2 Front Seat Assembly......................................................................................................................................... 200

Remove............................................................................................................................................................... 200

Reinstall.............................................................................................................................................................. 202

Seat Memory Calibration, Front Seat Type 11................................................................................................. 203

5.3 Front Seat Outer Side Cover Assembly........................................................................................................... 205

Remove............................................................................................................................................................... 205

Disassemble....................................................................................................................................................... 206

Front Seat Adjustment Switch........................................................................................................................ 206

Memory Position Switch Assembly................................................................................................................. 207

Reinstall.............................................................................................................................................................. 207

5.4 Front Seat Inner Side Cover.............................................................................................................................. 208

Remove............................................................................................................................................................... 208

Reinstall.............................................................................................................................................................. 208

5.5 Front Seat-back Rear Cover Assembly............................................................................................................ 209

Remove............................................................................................................................................................... 209

Disassemble....................................................................................................................................................... 210

Reassemble........................................................................................................................................................ 210

Reinstall.............................................................................................................................................................. 211

5.6 Front Seat Head Restraint Assembly............................................................................................................... 212

Remove............................................................................................................................................................... 212

Disassemble....................................................................................................................................................... 212

Reassemble........................................................................................................................................................ 213

Reinstall.............................................................................................................................................................. 213

5.7 Front Seat Head Restraint Sleeve..................................................................................................................... 214

Remove............................................................................................................................................................... 214

Reinstall.............................................................................................................................................................. 214

5.8 Lumbar Support Knob Assembly..................................................................................................................... 215

Remove............................................................................................................................................................... 215

Reinstall.............................................................................................................................................................. 215

5.9 Front Seat-back Pad and Cover Assembly...................................................................................................... 216

Remove............................................................................................................................................................... 216

Disassemble....................................................................................................................................................... 217

Reassemble........................................................................................................................................................ 218

Reinstall.............................................................................................................................................................. 218

5.10 Front Seat-back Frame Assembly.................................................................................................................... 219

Remove............................................................................................................................................................... 219

Disassemble....................................................................................................................................................... 220

Side Impact Airbag Assembly ........................................................................................................................ 220

Front Seat Dummy Block Insert Assembly..................................................................................................... 221

Lumbar Support Assembly............................................................................................................................. 221

Active Head Restraint Frame Assembly......................................................................................................... 223

Reinstall.............................................................................................................................................................. 224

5.11 Seat Cable Tray and Memory Module .............................................................................................................. 225

Remove............................................................................................................................................................... 225

Reinstall.............................................................................................................................................................. 226

5.12 Track and Height Adjust Assembly.................................................................................................................. 227

Remove............................................................................................................................................................... 227

Reinstall.............................................................................................................................................................. 227

5.13 Front Seat Cushion Pad and Cover Assembly................................................................................................ 228

Remove............................................................................................................................................................... 228

Disassemble....................................................................................................................................................... 229

Reassemble........................................................................................................................................................ 230

Reinstall.............................................................................................................................................................. 230

Seat Assemblies Page 1A7–11

Page 1A7–11

5.14 Front Seat Cushion Frame Assembly.............................................................................................................. 231

Remove............................................................................................................................................................... 231

Disassemble....................................................................................................................................................... 231

Reassemble........................................................................................................................................................ 231

Reinstall.............................................................................................................................................................. 231

5.15 Front Seat Lift Motor Assemblies..................................................................................................................... 232

5.16 Front Seat Fore/Aft Movement Motor Assembly............................................................................................. 233

5.17 Front Seat-back Recline Motor Assembly ....................................................................................................... 234

5.18 Drive Motor Hall-effect Sensors........................................................................................................................ 235

6 Service Operations – Front Seat, Regular Cab and Utility.............................................................236

6.1 Usage Chart........................................................................................................................................................ 236

How to Use this Chart........................................................................................................................................ 236

Front Seat Type 1............................................................................................................................................... 237

Front Seat Type 2............................................................................................................................................... 239

Front Seat Type 3............................................................................................................................................... 241

Front Seat Type 4............................................................................................................................................... 243

Front Seat Type 5............................................................................................................................................... 245

Front Seat Type 6............................................................................................................................................... 247

6.2 Front Seat Assembly......................................................................................................................................... 249

Remove............................................................................................................................................................... 249

Reinstall.............................................................................................................................................................. 251

6.3 Front Seat Outer Side Cover Assembly........................................................................................................... 252

Remove............................................................................................................................................................... 252

Disassemble....................................................................................................................................................... 253

Front Seat Adjustment Switch........................................................................................................................ 253

Reinstall.............................................................................................................................................................. 253

6.4 Front Seat Inner Side Cover.............................................................................................................................. 254

Remove............................................................................................................................................................... 254

Reinstall.............................................................................................................................................................. 254

6.5 Front Seat-back Rear Cover Assembly............................................................................................................ 255

Remove............................................................................................................................................................... 255

Reinstall.............................................................................................................................................................. 256

6.6 Dump-latch Mechanism Assembly................................................................................................................... 257

Remove............................................................................................................................................................... 257

Reinstall.............................................................................................................................................................. 258

6.7 Front Seat Head Restraint Assembly............................................................................................................... 259

Remove............................................................................................................................................................... 259

Disassemble....................................................................................................................................................... 259

Reassemble........................................................................................................................................................ 260

Reinstall.............................................................................................................................................................. 260

6.8 Front Seat Head Restraint Sleeve..................................................................................................................... 261

Remove............................................................................................................................................................... 261

Reinstall.............................................................................................................................................................. 261

6.9 Lumbar Support Knob Assembly..................................................................................................................... 262

Remove............................................................................................................................................................... 262

Reinstall.............................................................................................................................................................. 262

6.10 Front Seat-back Pad and Cover Assembly...................................................................................................... 263

Remove............................................................................................................................................................... 263

Disassemble....................................................................................................................................................... 264

Reassemble........................................................................................................................................................ 265

Reinstall.............................................................................................................................................................. 265

Seat Assemblies Page 1A7–12

Page 1A7–12

6.11 Front Seat-back Frame Assembly.................................................................................................................... 266

Remove............................................................................................................................................................... 266

Disassemble....................................................................................................................................................... 266

Front Seat Dummy Block Insert Assembly..................................................................................................... 266

Lumbar Support Assembly............................................................................................................................. 267

Reinstall.............................................................................................................................................................. 268

6.12 Seat Cable Tray.................................................................................................................................................. 269

Remove............................................................................................................................................................... 269

Reinstall.............................................................................................................................................................. 270

6.13 Track and Height Adjust Assembly.................................................................................................................. 271

Remove............................................................................................................................................................... 271

Reinstall.............................................................................................................................................................. 271

6.14 Front Seat Cushion Pad and Cover Assembly................................................................................................ 272

Remove............................................................................................................................................................... 272

Disassemble....................................................................................................................................................... 273

Reassemble........................................................................................................................................................ 274

Reinstall.............................................................................................................................................................. 274

6.15 Front Seat Cushion Frame Assembly.............................................................................................................. 275

Remove............................................................................................................................................................... 275

Disassemble....................................................................................................................................................... 275

Reassemble........................................................................................................................................................ 275

Reinstall.............................................................................................................................................................. 275

6.16 Front Seat Lift Motor Assemblies..................................................................................................................... 276

7 Service Operations – Front Seat, Coupe .........................................................................................277

7.1 Usage Chart........................................................................................................................................................ 277

How to Use this Chart........................................................................................................................................ 277

Front Seat Type 1............................................................................................................................................... 278

Front Seat Type 2............................................................................................................................................... 280

7.2 Front Seat Assembly......................................................................................................................................... 282

Remove............................................................................................................................................................... 282

Reinstall.............................................................................................................................................................. 284

Seat Memory Calibration, Front Seat Type 1................................................................................................... 285

7.3 Front Seat Outer Side Cover Assembly........................................................................................................... 287

Remove............................................................................................................................................................... 287

Disassemble....................................................................................................................................................... 288

Front Seat Adjustment Switch........................................................................................................................ 288

Memory Position Switch Assembly................................................................................................................. 289

EZ-entry Module............................................................................................................................................. 289

Reinstall.............................................................................................................................................................. 289

7.4 Front Seat Inner Side Cover.............................................................................................................................. 290

Remove............................................................................................................................................................... 290

Reinstall.............................................................................................................................................................. 290

7.5 Front Seat-back Rear Cover Assembly............................................................................................................ 291

Remove............................................................................................................................................................... 291

Disassemble....................................................................................................................................................... 292

Reassemble........................................................................................................................................................ 292

Reinstall.............................................................................................................................................................. 293

7.6 Front Seat Head Restraint Assembly............................................................................................................... 294

Remove............................................................................................................................................................... 294

Disassemble....................................................................................................................................................... 294

Reassemble........................................................................................................................................................ 295

Reinstall.............................................................................................................................................................. 295

7.7 Front Seat Head Restraint Sleeve..................................................................................................................... 296

Remove............................................................................................................................................................... 296

Reinstall.............................................................................................................................................................. 296

Seat Assemblies Page 1A7–13

Page 1A7–13

7.8 EZ-entry Release Lever and Escutcheon......................................................................................................... 297

Remove............................................................................................................................................................... 297

Reinstall.............................................................................................................................................................. 299

7.9 EZ-entry Switch and Release Cable Assembly ............................................................................................... 300

7.10 Lumbar Support Knob Assembly..................................................................................................................... 301

Remove............................................................................................................................................................... 301

Reinstall.............................................................................................................................................................. 301

7.11 Front Seat-back Pad and Cover Assembly...................................................................................................... 302

Remove............................................................................................................................................................... 302

Disassemble....................................................................................................................................................... 303

Reassemble........................................................................................................................................................ 303

Reinstall.............................................................................................................................................................. 304

7.12 Front Seat-back Frame Assembly.................................................................................................................... 305

Remove............................................................................................................................................................... 305

Disassemble....................................................................................................................................................... 306

EZ-entry Release Lever Retaining Clip and Return Spring............................................................................ 306

Side Impact Airbag Assembly ........................................................................................................................ 307

Front Seat Dummy Block Insert Assembly..................................................................................................... 308

Lumbar Support Assembly............................................................................................................................. 309

Active Head Restraint Frame Assembly......................................................................................................... 310

Reinstall.............................................................................................................................................................. 311

7.13 Seat Cable Tray and Memory Module .............................................................................................................. 312

Remove............................................................................................................................................................... 312

Reinstall.............................................................................................................................................................. 313

7.14 Track and Height Adjust Assembly.................................................................................................................. 314

Remove............................................................................................................................................................... 314

Reinstall.............................................................................................................................................................. 314

7.15 Front Seat Cushion Pad and Cover Assembly................................................................................................ 315

Remove............................................................................................................................................................... 315

Disassemble....................................................................................................................................................... 315

Reassemble........................................................................................................................................................ 317

Reinstall.............................................................................................................................................................. 318

7.16 Front Seat Cushion Frame Assembly.............................................................................................................. 319

Remove............................................................................................................................................................... 319

Disassemble....................................................................................................................................................... 319

Reassemble........................................................................................................................................................ 319

Reinstall.............................................................................................................................................................. 319

7.17 Front Seat Lift Motor Assemblies..................................................................................................................... 320

7.18 Front Seat Fore/Aft Movement Motor Assembly............................................................................................. 321

7.19 Front Seat-back Recline Motor Assembly ....................................................................................................... 322

7.20 Drive Motor Hall-effect Sensors........................................................................................................................ 323

8 Service Operations – Rear Seat, Sedan...........................................................................................324

8.1 Usage Chart........................................................................................................................................................ 324

How to Use this Chart........................................................................................................................................ 324

Rear Seat Type 1................................................................................................................................................ 325

Rear Seat Type 2................................................................................................................................................ 326

Rear Seat Type 3................................................................................................................................................ 327

Rear Seat Type 4................................................................................................................................................ 328

Rear Seat-back Centre Tray and Armrest Assembly...................................................................................... 329

Seat Assemblies Page 1A7–14

Page 1A7–14

8.2 Rear Seat Cushion Assembly........................................................................................................................... 330

Remove............................................................................................................................................................... 330

Disassemble....................................................................................................................................................... 330

Remove – Rear Seat Cushion Release Handle ............................................................................................. 330

Reinstall – Rear Seat Cushion Release Handle............................................................................................. 331

Remove – Rear Seat Cushion Frame ............................................................................................................ 331

Remove – Rear Seat Cushion Cover, Hook and Loop................................................................................... 332

Reinstall – Rear Seat Cushion Cover, Hook and Loop................................................................................... 333

Reinstall – Rear Seat Cushion Frame, Surebond........................................................................................... 335

Reinstall – Rear Seat Cushion Frame, Hook and Loop.................................................................................. 337

Reinstall.............................................................................................................................................................. 339

8.3 Rear Seat-back Assembly................................................................................................................................. 340

Remove............................................................................................................................................................... 340

Disassemble....................................................................................................................................................... 341

Remove – Rear Seat-back Head Restraint .................................................................................................... 341

Reinstall – Rear Seat-back Head Restraint.................................................................................................... 341

Remove – Rear Seat-back Head Restraint Guide.......................................................................................... 341

Reinstall – Rear Seat-back Head Restraint Guide ......................................................................................... 342

Remove – Rear Seat-back Cover, Hook and Loop ........................................................................................ 342

Reinstall – Rear Seat-back Cover, Hook and Loop........................................................................................ 344

Reinstall.............................................................................................................................................................. 348

8.4 Rear Seat-back Head Restraint Assembly....................................................................................................... 349

Remove............................................................................................................................................................... 349

Disassemble....................................................................................................................................................... 349

Reassemble........................................................................................................................................................ 349

Reinstall.............................................................................................................................................................. 349

8.5 Rear Seat-back Head Restraint Guide.............................................................................................................. 350

Remove............................................................................................................................................................... 350

Reinstall.............................................................................................................................................................. 350

8.6 Rear Seat-back Centre, Armrest Assembly..................................................................................................... 351

Remove............................................................................................................................................................... 351

Disassemble....................................................................................................................................................... 351

Reassemble........................................................................................................................................................ 352

Reinstall.............................................................................................................................................................. 353

8.7 Rear Seat Centre Back Assembly..................................................................................................................... 354

Remove............................................................................................................................................................... 354

Disassemble....................................................................................................................................................... 354

Remove – Rear Seat Centre Back Cover and Pad Assembly........................................................................ 354

Reinstall – Rear Seat Centre Back Cover and Pad Assembly ....................................................................... 355

Remove – Rear Seat-back Centre Hinge....................................................................................................... 356

Reinstall – Rear Seat-back Centre Hinge....................................................................................................... 356

Remove – Rear Seat-back Centre Release Button........................................................................................ 356

Reinstall – Rear Seat-back Centre Release Button........................................................................................ 356

Remove – Rear Seat-back Centre Lock Actuator........................................................................................... 356

Reinstall – Rear Seat-back Centre, Lock Actuator......................................................................................... 357

Reinstall.............................................................................................................................................................. 357

8.8 Rear Seat Centre Back, Lock Striker................................................................................................................ 358

Remove............................................................................................................................................................... 358

Reinstall.............................................................................................................................................................. 359

Seat Assemblies Page 1A7–15

Page 1A7–15

9 Service Operations – Rear Seat, Wagon..........................................................................................360

9.1 Usage Chart........................................................................................................................................................ 360

How to Use this Chart........................................................................................................................................ 360

Rear Seat Type 1................................................................................................................................................ 361

Rear Seat Type 2................................................................................................................................................ 362

Rear Seat Type 3................................................................................................................................................ 363

Rear Seat Type 4................................................................................................................................................ 365

Rear Seat-back Frame Assembly ..................................................................................................................... 367

9.2 Rear Seat Cushion Assembly........................................................................................................................... 368

Remove............................................................................................................................................................... 368

Disassemble....................................................................................................................................................... 368

Remove – Rear Seat Cushion Release Handle ............................................................................................. 368

Reinstall – Rear Seat Cushion Release Handle............................................................................................. 369

Remove – Rear Seat Cushion Frame ............................................................................................................ 369

Remove – Rear Seat Cushion Cover, Hook and Loop................................................................................... 370

Reinstall – Rear Seat Cushion Cover, Hook and Loop................................................................................... 371

Reinstall – Rear Seat Cushion Frame, Surebond........................................................................................... 373

Reinstall – Rear Seat Cushion Frame, Hook and Loop.................................................................................. 375

Reinstall.............................................................................................................................................................. 377

9.3 Rear Seat Bolster Assembly............................................................................................................................. 378

Remove............................................................................................................................................................... 378

Reinstall.............................................................................................................................................................. 378

9.4 Rear Seat-back Assembly................................................................................................................................. 379

Remove............................................................................................................................................................... 379

Disassemble....................................................................................................................................................... 380

Remove – Rear Seat-back Release Handle................................................................................................... 380

Reinstall – Rear Seat-back Release Handle .................................................................................................. 380

Remove – Rear Seat-back Retainer Locking Plate........................................................................................ 381

Reinstall – Rear Seat-back Retainer Locking Plate........................................................................................ 381

Remove – Rear Seat-back Head Restraint .................................................................................................... 381

Reinstall – Rear Seat-back Head Restraint.................................................................................................... 381

Remove – Rear Seat-back Trim Cover .......................................................................................................... 382

Reinstall – Rear Seat-back Trim Cover.......................................................................................................... 382

Remove – Child Seat Anchor......................................................................................................................... 382

Reinstall – Child Seat Anchor......................................................................................................................... 382

Remove – Rear Seat-back Head Restraint Guide.......................................................................................... 383

Reinstall – Rear Seat-back Head Restraint Guide ......................................................................................... 384

Remove – Rear Seat-back Armrest Assembly............................................................................................... 384

Reinstall – Rear Seat-back Armrest Assembly............................................................................................... 386

Remove – Rear Seat-back Cover and Pad Assembly.................................................................................... 387

Reinstall – Rear Seat-back Cover and Pad Assembly ................................................................................... 389

Remove – Rear Seat-back Cover, Hook and Loop ........................................................................................ 389

Reinstall – Rear Seat-back Cover, Hook and Loop........................................................................................ 391

Remove – Rear Seat-back Frame Release Button ........................................................................................ 392

Reinstall – Rear Seat-back Frame Release Button........................................................................................ 392

Remove – Left-hand Rear Seat-back Frame Actuator Cable Assembly......................................................... 393

Reinstall – Left-hand Rear Seat-back Frame Actuator Cable Assembly........................................................ 394

Remove – Left-hand Rear Seat-back Frame Inner Latch............................................................................... 394

Reinstall – Left-hand Rear Seat-back Frame Inner Latch .............................................................................. 394

Remove – Rear Seat-back Frame Outer Latch.............................................................................................. 395

Reinstall – Rear Seat-back Frame Outer Latch.............................................................................................. 395

Remove – Rear Seat-back Frame Actuator ................................................................................................... 396

Reinstall – Rear Seat-back Frame Actuator................................................................................................... 396

Remove – Rear Seat-back Armrest Hinge..................................................................................................... 396

Reinstall – Rear Seat-back Armrest Hinge..................................................................................................... 397

Remove – Rear Seat-back Seatbelt Retractor ............................................................................................... 397

Reinstall – Rear Seat-back Seatbelt Retractor............................................................................................... 398

Reinstall.............................................................................................................................................................. 398

Seat Assemblies Page 1A7–16

Page 1A7–16

9.5 Rear Seat-back Head Restraint Assembly....................................................................................................... 399

Remove............................................................................................................................................................... 399

Disassemble....................................................................................................................................................... 399

Reassemble........................................................................................................................................................ 400

Reinstall.............................................................................................................................................................. 400

9.6 Rear Seat-back Head Restraint Guide.............................................................................................................. 401

Remove............................................................................................................................................................... 401

Reinstall.............................................................................................................................................................. 403

9.7 Rear Seat-back Armrest Assembly .................................................................................................................. 404

Remove............................................................................................................................................................... 404

Disassemble....................................................................................................................................................... 404

Reassemble........................................................................................................................................................ 405

Reinstall.............................................................................................................................................................. 405

9.8 Rear Seat-back Armrest Hinge Assembly and Centre Cover......................................................................... 406

Remove............................................................................................................................................................... 406

Reinstall.............................................................................................................................................................. 408

9.9 Rear Seat Centre Support................................................................................................................................. 409

Remove............................................................................................................................................................... 409

Reinstall.............................................................................................................................................................. 409

9.10 Rear Seat-back Lock Striker ............................................................................................................................. 410

Remove............................................................................................................................................................... 410

Reinstall.............................................................................................................................................................. 410

10 Service Operations – Rear Seat, Crew Cab.....................................................................................411

Rear Seat ............................................................................................................................................................ 411

10.1 Rear Seat Cushion Assembly........................................................................................................................... 413

Remove............................................................................................................................................................... 413

Disassemble....................................................................................................................................................... 414

Cushion Cover and Pad Assembly................................................................................................................. 414

Rear Seat Hinge............................................................................................................................................. 418

Rear Seat Latch ............................................................................................................................................. 419

Rear Seat Release Button.............................................................................................................................. 419

Reinstall.............................................................................................................................................................. 420

10.2 Rear Seat-back Insert ........................................................................................................................................ 421

Remove............................................................................................................................................................... 421

Disassemble....................................................................................................................................................... 421

Reassemble........................................................................................................................................................ 422

Reinstall.............................................................................................................................................................. 422

10.3 Rear Seat-back Assembly................................................................................................................................. 423

Remove............................................................................................................................................................... 423

Disassemble....................................................................................................................................................... 423

Rear Seat-back Cover.................................................................................................................................... 423

Reinstall.............................................................................................................................................................. 427

10.4 Head Restraint Assembly.................................................................................................................................. 428

Remove............................................................................................................................................................... 428

Disassemble....................................................................................................................................................... 429

Reassemble........................................................................................................................................................ 430

Reinstall.............................................................................................................................................................. 430

10.5 Head Restraint Sleeve ....................................................................................................................................... 431

Remove............................................................................................................................................................... 431

Reinstall.............................................................................................................................................................. 431

Seat Assemblies Page 1A7–17

Page 1A7–17

11 Service Operations – Rear Seat, Coupe...........................................................................................432

Rear Seat ............................................................................................................................................................ 432

11.1 Rear Seat Cushion Assembly........................................................................................................................... 433

Remove............................................................................................................................................................... 433

Disassemble....................................................................................................................................................... 434

Remove – Rear Seat Cushion Release Handle ............................................................................................. 434

Reinstall – Rear Seat Cushion Release Handle............................................................................................. 434

Remove – Rear Seat Cushion Centre Escutcheon ........................................................................................ 435

Reinstall – Rear Seat Cushion Centre Escutcheon........................................................................................ 435

Remove – Rear Seat Cushion Cover and Pad Assembly ..............................................................................436

Reinstall – Rear Seat Cushion Cover and Pad Assembly.............................................................................. 436

Remove – Rear Seat Cushion Cover............................................................................................................. 437

Reinstall – Rear Seat Cushion Cover............................................................................................................. 438

Reinstall.............................................................................................................................................................. 439

11.2 Rear Seat-back Assembly................................................................................................................................. 440

Remove............................................................................................................................................................... 440

Disassemble....................................................................................................................................................... 441

Remove – Rear Seat-back Head Restraint .................................................................................................... 441

Reinstall – Rear Seat-back Head Restraint.................................................................................................... 441

Remove – Rear Seat-back Head Restraint Guide.......................................................................................... 441

Reinstall – Rear Seat-back Head Restraint Guide ......................................................................................... 442

Remove – Rear Seat-back Centre Escutcheon.............................................................................................. 442

Reinstall – Rear Seat-back Centre Escutcheon ............................................................................................. 442

Remove – Rear Seat-back Cover and Pad Assembly.................................................................................... 443

Reinstall – Rear Seat-back Cover and Pad Assembly ................................................................................... 444

Remove – Rear Seat-back Cover................................................................................................................... 445

Reinstall – Rear Seat-back Cover.................................................................................................................. 446

Reinstall.............................................................................................................................................................. 447

11.3 Rear Seat Head Restraint Assembly................................................................................................................ 448

Remove............................................................................................................................................................... 448

Reinstall.............................................................................................................................................................. 448

11.4 Rear Seat Head Restraint Guide....................................................................................................................... 449

Remove............................................................................................................................................................... 449

Reinstall.............................................................................................................................................................. 449

11.5 Child Comforter Guide – Coupe ....................................................................................................................... 450

Remove............................................................................................................................................................... 450

Reinstall.............................................................................................................................................................. 451

12 Torque Wrench Specifications..........................................................................................................452

Front Seat, Except Regular Cab, Utility and Coupe........................................................................................ 452

Front Seat, Regular Cab and Utility.................................................................................................................. 452

Front Seat, Coupe.............................................................................................................................................. 452

Rear Seat, Sedan................................................................................................................................................ 453

Rear Seat, Wagon .............................................................................................................................................. 453

Rear Seat, Crew Cab.......................................................................................................................................... 453

Rear Seat, Coupe............................................................................................................................................... 453

Seat Assemblies Page 1A7–18

Page 1A7–18

1 General Information

This section describes the diagnostic and service procedure s for the seat assemblies.

For Diagnosis the section is di vided as follows:

• front seat assemblies for vehicles, except coupe, fitted with non-memory seats,

• front seat assemblies for vehicles, except coupe, fitted with memory seats, and

• front seat assemblies for coupe.

For Service Operations the section is divided as follows:

• front seat assemblies for all models e xcept coupe, regular cab and utility,

• front seat assemblies for regular cab and utili ty,

• front seat assemblies for coupe,

• rear seat assemblies for sedan,

• rear seat assemblies for wagon,

• rear seat assemblies for crew cab, and

• rear seat assemblies for coupe.

1.1 Front Seat General Description

For reasons of personal safety, the vehicle

must only be driven after the seat has been

adjusted to the correct driving position. Do

not adjust the driver’s seat when the vehicle

is moving as the seat could move away from

the driving position, causing loss of control.

Accessory and after mar ket seat covers MUST

NOT be fitted to any vehicle with side impact

airbags unless app roved by the manu facturer.

Non-approved seat covers may inhibit the

operation of the side airbag, reducing the

protection otherwise provided to the

occupants during a side-impact collision.

Depending on vehicl e Model Level, the front seats fitted may feature:

• Four or eight-way electric movement functions,

• side impact airbag assembl ies,

• cloth or leather trim,

• active head restraints,

• a driver's seat memory positio n system that integrates with other vehicle functions, and

• an EZ-entry system to aid rear seat access on coupe vehicles.

To identify the front seat type fitted to Sedan and W ag on vehicles, refer to 5.1 Usage Chart. For Regular Cab an d Utility

vehicles, refer to 6.1 Usage Chart. For Coupe vehicles, refer to 7.1 Usage Chart.

The front seatbelt buckle and pretens ioner assemblies are attached to the front seats. For service operations refer to

Section 12M Occupant Protection System.

Seat Assemblies Page 1A7–19

Page 1A7–19

Seat Covers

Two seat cover construction methods are use d for the front seat assemb lies. Surebond type covers are not serviced

separately as they are glued to the seat pa d. Hook and Loop type covers are fully serviceable as they are attached within

the grooves of the seat pad with a Velcro type materia l.

Electric Seat Operation

Depending on Model Level of the vehicle, the following front seat electric movement functions are available:

• four-way – seat cushion front raise/lower and rear raise/lower, and

• eight-way – as four- way plus seat fore/aft and seat-back recline.

Referring to Figure 1A7 – 1, four electric motor and gearbox assemblies provide the mov ement of the front seat, one

each, where fitted, for:

• front raise/lower movement (1),

• rear raise/lower movement (2),

• seat fore/aft movement (3), and

• seat-back recline (4).

Figure 1A7 – 1

Each function is independentl y controlled. Alternatively, if desired the front and rear raise/lower movement can be

performed together to raise or lower the complete seat.

Raise/Lower Movement

Two lift motor and gearbox assemblies (1 and 2, refer to Figure 1A7 – 1) are attached to the inboard side of the track and

height adjust assembly; one for front and the other for rear raise/lo wer movement. When a lift motor is operating, it drive s

the gearbox which draws in or extends a mating worm shaft. This in turn operates on an arm and cross-shaft.

The cross-shaft is connected to another arm on the opposite side of the track and height adjust assembly and allows the

raising or lowering of that portion (front or rear) of the seat.

Fore/Aft Movement

To provide seat fore/aft movement, the motor and gearbox assembly (3, refer to Figure 1A7 – 1) is connected to a shaft

geared at each end. Within e ach seat track, the shaft gear is meshed upon a rack, providing fore/aft movement.

Seat Assemblies Page 1A7–20

Page 1A7–20

Recline Movement

Seat-back recline movement is provided by the recline motor and gearbo x assembly (4, refer to Figure 1A7 – 1), which is

attached to the seat-back frame. A shaft from the gearbox is fitted with a drive gear at each end and is meshed with a

driven gear attached to each seat-back fram e pivot. Motor oper ation causes rotation of the drive ge ar, which turns the

driven gear and seat-back frame, thereby altering the seat-back recline a ngle.

All motors reverse direction when the polarity at the wiring terminals is reversed, resu lting in seat movement in the

opposite direction. During seat position adjustment, the drive motors will cease operation at the end of their travel via an

internal thermal cut-out switch, even if the seat adjustment switch is held on.

Components making up the seat-back recline mechanism and track and height adjust asse mbly are not serviced.

Four-way Movement Control

Four-way seat movement is controlled by a front seat

adjustment switch (1), which is fitted to the outer side of the

front seat.

The switch provides indepe ndent control of the front and

rear raise/lower movements.

To adjust the seat:

• Operate the switch up or down to raise/lower the seat.

• Operate the front of the switch up or down to

raise/lower the front of the seat.

• Operate the rear of the switch up or down to

raise/lower the rear of the seat.

For further information, refer to the Owner's Handbook.

Figure 1A7 – 2

Eight-way Movement Control

The eight-way front seat adjustment switch has an

additional knob (1) which provides control of the seat-back

recline movement. The knob (2) provi des the same

functions as four-way seats plus fore/aft movement.

To adjust the seat:

• Operate the switch forward or backward to move the

seat fore/aft.

• Operate the recline knob to adjust the angl e of the

seat-back. The seat-back moves in the same direction

to which the switch is moved.

For Coupe vehicles, the seat-back recline switch is

disabled during operation of the EZ-entry function (refer to

EZ-entry System, Coupe, in this Section). The switch will be

enabled once the function is completed or cancelled. The

front seat adjustment switch is monitored by the EZ-entr y

module during EZ-entry function and if the switch is

operated, the movement will be cancelled.

For further information, refer to the Owner's Handbook. Figure 1A7 – 3

Seat Assemblies Page 1A7–21

Page 1A7–21

Memory Seat Position System

The driver’s seat in Level 3 and Cou pe vehicles is fitted with

a memory seat position system.

The memory seat position system allo ws the driver to adjust

the seat to any of the positions stored in memory by

pressing one of the three memory buttons (1).

In addition, on keyless entr y to Level 3 vehicles, the memory

seat position system through the Body Control Module

(BCM), recognises which igniti on key has been used

(Priority 1 or Priority 2) and adjusts the seat positio n to the

driver’s preferred set position.

Audible and visual feedback for the various fu nctions of the

memory seat position system is provided. The s ystem has a

green LED and a chime, which are used to indicate memory

saves, the recall of priority memory numbers and for seat

diagnostic procedures.

Hall-effect sensors integrated into each of the motor

assemblies are used to monit or the positi on of the seat.

Figure 1A7 – 4

The seat memory module, mounted under the front seat, has a non-volatile memory. While disconnecting the battery will

not erase the seat memory settings, the seat will require recalibrating to reset the potentiometer stop values within the

memory control module.

NOTE

Some of the procedures relating to memory seat

diagnosis detai led in 3 Diagnostics – Front Seat,

Memory and Rear-view Mirror, Except Coupe

require the use of both the Pri ority 1 Key and the

Priority 2 Key.

Priority Keys (Level 3 Vehicles Only )

On Level 3 vehicles, the driver's seat movement is also a function of the priority keys. Priority key 1 and priority key 2

move the driver's seat and exterior mirrors to the positi ons in which they were set when that key was last inserted into the

ignition switch. When the vehi cle is unlocked using the Unlo ck button on a priority key and that priority key is inserted into

the ignition switch, the vehicle identifies the priority key and:

• adjusts the position of the driver's seat,

• adjusts the position of the exterior mirrors to the last position used for that key, and

• if the mirror dip function is activated, adjusts the position of the passenger's exterior mirror when the transmission

selector is placed in reverse.

The driver's seat moves to the last position used for that priority key if:

• that was a memory button position, or

• the seat was adjusted without memorising the position.

The driver's seat moves to the alternate prio rity key position only after pressing the unlock button on the alternate priority

key. If the alternate priority key is not used to unlock the vehicle, that priority key will adjust all personalised settings (for

example, exterior mirror angles, radio and climate control), except the driver's seat.

If activated, the left exterior mirror dip function is linked to the seat and priority key memory (that is, each seat memory

position also stores the left exterior mirror DIP position, if activated).

For further information, refer to the Owner's Handbook.

Seat Assemblies Page 1A7–22

Page 1A7–22

Memory Buttons

The seat can store three different memory settings. To recall a stored memory seat and exterior mirror position, press

and hold one of the memory buttons. After the seat has reached its memorised position, release the memory button. If

the memory button is released before the seat reaches its memorised position, the seat stops moving.

To change a memory position:

1 Adjust the seat with the eight-way front seat adjustment switch.

2 Adjust the exterior mirrors (including the dip position).

3 Place the transmission select or in either park or neutral, then turn on the ignition switch.

4 Press the mirror DIP / memory store button (1, 2 or 3) within five seconds. (Two audible chimes are generated

when a new memory position has been stored.)

5 Place the transmission select or in reverse and wait for the passenger' s mirror to be returned from the DIP angle to

complete saving the mirror position into memory, refer to Using the Exterior Mirrors in this Section.

Using the Exterior Mirrors

The right exterior mirror and left exterior mirror can be adjusted using the rear-view mirror switch on the driver’s door

armrest when the ignition is on.

To operate the right exterior mirror or left exterior mirror:

1 Turn on the ignition switch.

2 Move the rocker switch on the rear-view mirror switch to the position to control the right or left exterior mirror.

3 Press the rear-view mirror switch in one of the directions indicated by one of the moulded dots on the edge of the

rear-view mirror switch to move the mirror up, down, left or right.

Adjusting the DIP View

To change the mirror dip posit ion a nd save it in memory:

1 Turn on the ignition switch.

2 Place the transmission select or in reverse.

3 Ensure the DIP angle is switched on; the left exterior mirror moves to the current DIP position.

4 Adjust the left exterior mirror using the rear-view mirror switch.

5 Place the transmission select or out of reverse.

6 Press the mirror DIP button, then the desired memory store button (1, 2 or 3) to save the mirror dip position into

memory.

For further information, refer to the Owner's Handbook.

Toggle DIP Function On / Off

When the mirror DIP function is activated, the left exterior mirror moves to the position set, typically enabling the driver to

see the kerb more clearly. If activated, the DIP function is operational when the ignition is on and the transmission

selector placed in reverse.

To toggle between the dip view and normal view, press the mirror DIP / memory store button.

• When the DIP function is turned on, two audible chimes are generated.

• When the DIP function is turned off, one audible chime is generated.

For further information, refer to the Owner's Handbook.

Seat Assemblies Page 1A7–23

Page 1A7–23

EZ-entry System, Coupe

The EZ-entry system provides a one touch mechanism to

move the front seat and allow rear seat passengers to enter

or exit the vehicle. The EZ-entry system comprises of:

• an EZ-entry release lever (1),

• a seat return switch (2),

• a passenger presence detection switch (3),

• an EZ-entry switch (4),

• an EZ-entry module (5) – vehicles without memory

function, and

• a memory module incorporating EZ-entry functions (6)

– vehicles with memory function.

When the EZ-entry release lever is un-latched, the

seat-back can be tilted forward.

The EZ-entry module detects if the EZ-entr y feature has

been activated via the EZ-entry switch and providing the

seat is not occupied, the seat will automatically move

forward until end of travel is reached.

Seat fore/ aft position is monitored by a sensor incorporated

with the fore/aft drive motor and recorde d in the EZ-entry

module.

To return the seat, the operator returns the seat-back to the

latched position and presses and holds the seat return

button. The seat will then return to it’s last recorded location.

If the seat return switch remains held, after a period of three

seconds the seat will resume its rearward movement for as

long as the switch is held or until the end of seat travel is

reached.

Figure 1A7 – 5

A passenger presence detection switch (1) is incorporated

into the front seat cushions (2).

Detection of a weight 15 kg or more over the passenger

presence detection switch (seat cushion) will cause the

EZ-entry module to either cancel fore/ aft movement or

prevent fore/ aft movement from commencing should the

EZ-entry function be initiated.

If weight detection causes the EZ-entry function to cease, a

period of one second must pass without weight before re-

start will commence.

The passenger presence detection switch is a pressur e

switch with a nominal high resistance condition with no

weight on the seat. The resistance decreases as the weight

is increased.

An integral diode is provided within the passeng er presence

detection switch and is used by the module to verify

connection of the switch prior to forward movement of the

seat during the operation of the EZ-entry function.

The module will test for the following conditions on the

passenger presence detection switch:

• either line connected to ground or batter y, and

• either line open circuited.

Figure 1A7 – 6

Seat Assemblies Page 1A7–24

Page 1A7–24

Active Head Restraints

The front seats fitted to Acclaim, Calais, LX AWD Wagon a nd Coupe vehicles feature active he ad restraints. During a

rear-end collision, active head restraints are designed to move upward and forward to support the occupant's head an d

reduce neck injuries.

The impact force from the collision push es th e vehicle (and

seat) forward. As the vehicle moves for ward at a speed

greater than the occupant’s body can react to, the body is

moved into the seat (A) pushing on the active hea d restraint

support strap (1).

Due to the pivoting of the active head restrain t frame (2), the

frame along with the head restraint moves upward and

forward, supporting and limiting rearward travel of the

occupant's head.

Figure 1A7 – 7

Seat Assemblies Page 1A7–25

Page 1A7–25

1.2 Rear Seat General Description

Sedan

Depending on vehicl e Model Level, the rear seats fitted may feature:

• cloth or leather trim,

• adjustable head restraints, and

• centre armrest.

To identify the rear seat type fitted to Sedan, refer to 8.1 Usage Chart.

Wagon

Depending on vehicl e Model Level, the rear seats fitted may feature:

• cloth or leather trim,

• adjustable head restraints, and

• centre armrest.

To identify the rear seat type fitted to Wagon, refer to 9.1 Usage Chart.

Crew Cab

The rear seat cushion assembly is hinged at the rear of the base. This allows the rear seat cushion assembly to be

raised for access to a storage area belo w the seat containing the jack and spare wheel repl acement tools. The rear seat

cushion assembly is locked in place by a central latch with the release button located at the front of the seat, above the

transmission tunnel.

The rear seat-back assembly incorporates a wire frame that is moulded within the pad and is serviced only as an

assembly. A one-piece moulded plastic b ase is used instead of a wire frame for the rear seat cushion. This base

supports the cushion pad as well as having provision for the cushion cover to be attached to the base. The base and

cushion pad are serviced as separate components.

Coupe

The rear seats fitted feature:

• leather trim,

• adjustable head restraints,

• centre armrest, and

• child comforter guide (optional).

Where fitted, the child comforter guide is attached to the rear seat-back frame and is used to position the seat-belt in a

more comfortable position for smaller passengers such as childr en. When not in use, the child comforter guide stores

away in a small pouch on the side of the rear seat-back assembly.

Seat Covers

Two seat cover construction methods are use d for the rear seat assemb lies. Surebond type covers are not serviced

separately as they are glued to the seat pa d. Hook and Loop type covers are fully serviceable as they are attached within

the grooves of the seat pad with a Velcro type materia l.

Seat Assemblies Page 1A7–26

Page 1A7–26

2 Diagnostics – Front Seat,

Non-memory, Except Coupe

2.1 Prerequisites

Safety Requirements

When operating the seat as part of any Steps

in the diagnostic tables, ensure that fingers

and limbs are clear of mo ving parts.

Equipment

The following equipment is required to diagnose the seats:

• an unpowered test lamp with a current draw of less than 3 A, and

• a digital multimeter with a minimum impe dance of 10 MΩ.

Testing Procedures

The following points must be adhered to

when performing diagnostic testing on

components:

• Take care when using testing equipment

to diagnose wiring harness connectors. It

is preferred the technician backprobe the

connector to avoid terminal damage.

• When tests are required on connector

terminals, use the adapters in the

connector adapter kit KM–609 to prevent

damage to the terminals.

• Unless the multimeter being used has an

auto-ranging function, ensure the correct

range is selected.

• When backpro bing connectors, ensure the

test lamp ground lead is connected to an

appropriate ground point on the vehicle.

Ensure this ground point is not part of the

circuit being tested.

NOTE

When following the steps in the di agnostic tables,

perform them in the order cited. If the required

nominal value or result is not achi eved, rectif y t he

problem before proceeding any further.

Seat Assemblies Page 1A7–27

Page 1A7–27

2.2 Mechanical Diagnosis – Two-Way/Four-

Way Seat

Lumbar Support Inoperative

Introduction

This test is used to aid in diagnosing the lumbar support as sembly.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Checks if the lumbar support knob is properly engaging the lumbar support adjuster. Check the knob for cracks and

worn splines.

2 Checks if the lumbar support assembly is damaged or worn and if the retaining springs are serviceable and

securely attached to the seat-back frame assembly.

3 Checks if the lumbar support assembly is servicea ble and if the lumber support assembly strap is operating

correctly within the guide rails.

Diagnostic Table

Step Action Yes No

1 Remove the lumbar support knob, refer to 5.8 Lumbar Support Knob

Assembly.

Is the lumbar support adjust knob serviceable? Go to Step 2

Replace the knob,

refer to 5.8 Lumbar

Support Knob

Assembly

2 1 Remove the seat-back cover.

2 Inspect the lumbar support retainers and spri ngs.

Are the lumbar support retaining spri ngs serviceable and securel y

attached to the seat-back frame assembly? Go to Step 3

Replace or reattach

the retaining

springs, refer to

5.10 Front Seat-

back Frame

Assembly

3 1 Visually inspect the lumbar support assembly. Check for broken

or worn parts.

2 Check the strap running across the lumber support assembly is

serviceable and running freely within the guide rails.

NOTE

You may need to attach the lumber support knob to

actuate the strap.

Is the lumbar support assembly serviceabl e? System serviceable

Replace lumbar

support assembly

or resecure lumbar

support assembly

strap ensuring

strap is not binding

with guide rails,

refer to 5.10 Front

Seat-back Frame

Assembly

When all diagno sis an d repairs are completed, ch eck the system for correct op eration.

Seat Assemblies Page 1A7–28

Page 1A7–28

Seat Recline Forward and/or Back Function is Inoperative

Introduction

This test is used to aid in diagnosing the manual recline function of the seat assembly.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Checks if the recliner knob is properly engaging the recliner shaft. Check the knob for cracks and worn splines.

Diagnostic Table

Step Action Yes No

1 Remove the recliner knob, refer to 5.3 F ront Seat Outer Side Cover

Assembly

Is the recliner knob serviceable?

Replace the front

seat-back frame

assembly, refer to

5.10 Front Seat-

back Frame

Assembly

Replace the

recliner knob, refer

to 5.3 Front Seat

Outer Side Cover

Assembly

When all diagno sis an d repairs are completed, ch eck the system for correct op eration.

Seat Fore/Aft Movement Function is Inoperative or is Not Smooth

Introduction

This test is used to aid in diagnosing the fore/aft movement function of the seat being inoperative or the action of the seat

through the range of movement is not smooth.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Checks if there are any items obstructing the guide rails which may stop or hinder the seat movement.

2 Checks if the guide rails have adequate lubricant appli ed to provide a smooth operation for the seat.

3 Checks if the linkage assembly between the adjustment lever and locking tangs is worn or damaged. The lockin g

tangs must disengage from the guide rails be fore the seat will move.

4 Checks if the guide rails have been damaged. Any binding b etween the inner and outer guide rails will result in

poor operation of the fore and aft movement.

Diagnostic Table

Step Action Yes No

1 Are the guide rails free from obstructions? Go to Step 2 Remove the

obstructing item

2 Are the guide rails adequate ly lubricated?

Go to Step 3

Apply a small

amount of grease

type NLGI No. 1

Lithium Grease

(with 9% Zinc

Oxide) to the rails

3 Do the locking tangs disengage the guide rails when the sea t fore and

aft adjustment lever is raised to its full movement?

Go to Step 4

Replace the track

and height adjust

assembly, refer to

5.12 Track and

Height Adjust

Assembly

4 Do the guide rails bind at any point of travel during the fore and aft

movements of the seat? Replace the track

and height adjust

assembly, refer to

5.12 Track and

Height Adjust

Assembly System serviceable

When all diagno sis an d repairs are completed, ch eck the system for correct op eration.

Seat Assemblies Page 1A7–29

Page 1A7–29

2.3 Electrical Diagnosis – Four-way Driver’s

Seat, Except Reg Cab and Utility

The charts in this Section are used to aid in diagnosing faults on four-way driver’s seat assemblies. To aid in the use of

the diagnostic tables, refer to Wiring Diagr am – Four-way Driver’s Seat, Except Reg Ca b and Utility and

Connector Chart – Four- way Driver’s Seat, Exce pt Reg Cab and Utility.

Wiring Diagram – Four-way Driver’s Seat, Except Reg Cab and Utility

Figure 1A7 – 8

Connector Chart – Four-way Driver’s Seat, Except Reg Cab and Utility

Figure 1A7 – 9

Seat Assemblies Page 1A7–30

Page 1A7–30

None of the Driver’s Seat Adjustment Switch Functions Operate

Introduction

This test is used to aid in diagnosing the driver’s seat adjustment switch when none of the switch functions operate. The

test diagnoses the driver’s seat adjustment switch and associated power and ground circuits.

Refer to Wiring Diagram – Four-way Driver’s Seat, Except Reg Cab and Utility and

Connector Chart – Four- way Driver’s Seat, Exce pt Reg Cab and Utility to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Checks if battery voltage is greater than 11.5 V. The seat motors require gr eater than 11.5 V to operate correctly.

2 Checks if circuit breaker F2 located on the passen ger compartment fuse and relay panel assembl y is tripped.

Isolates if circuit breaker F2 is the fault affecting the circuit between the battery and connec tor X200 pin 19.

3 Checks if fusible link F105 located on the engine compartment fuse and relay panel assembly is serviceable.

Isolates if the fusible link is the fault affecting the circuit between the battery and connector X200 pin 19.

4 Checks if all the connectors required for the seat to operate effectively are in place a nd positively connected.

5 Checks if there is battery power at connector S50 – X1 pin 7. Isolates if there is a fault between the battery and

connector S50 – X1 pin 7.

6 Checks if there is battery power at connector X302 pi n 3. Isolates if there is a fault in circuit 540 between

connectors S50 – X1 pin 7 and X302 pin 3.

7 Checks if there is battery voltage at connector X200 pin 19. Isolates if the fault is between the battery and

connector X200 pin 19.

8 Checks if there is battery voltage at circuit breaker F2. Isolates whether the fault is between the b attery and circuit

breaker F2 or bet ween circuit breaker F2 an d connector X200 pin 19.

9 Checks if there is battery voltage at fusible link F105. Isolates whether the fault is between the battery and fusible

link F105 or between fusible li nk F105 and circuit breaker F2.

10 Checks if the driver’s seat adjustment switch is serviceable.

11 Checks if the ground point associated with the system is serviceable.

12 Checks if there is continuity between connectors S50 – X1 pin 6 and X302 pin 1 which supplies the ground circuit

for the driver’s seat adjustment switch. Isolates whether there is a fault in circuit 650 bet ween the switch and

connector X302 pin 1 or between connector X302 pin 1 and the groun d point.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and W iring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagrams.

Seat Assemblies Page 1A7–31

Page 1A7–31

Diagnostic Table

Step Action Yes No

1 Check the battery voltage, refer to Section 12A Battery.

Is the battery voltage greater than 11.5 V? Go to Step 2

Refer to Section

12A Battery for

further diagnosis

2 Inspect circuit breaker F2, refer to Section 12O Fuses, Relays and

Wiring Harnesses.

Is circuit breaker F2 tripped?

Allow the circuit

breaker to reset

(refer to Note 3).

If the circuit breaker

trips again, repair

or replace circuit

540 (refer to

Note 2) Go to Step 3

3 Inspect fusible link F105, refer to Section 12O Fuses, Relays and

Wiring Harnesses.

Is fuse F105 serviceable?

Go to Step 4

Replace the fusible

link.

If the fusible link

becomes

unserviceable

again, repair or

replace circuit 342

(refer to Note 2)

4 Are the following connectors secure (refer to Note 3)?

• S50

• X200

• X302

• Y67

• Y69 Go to Step 5

Ensure the

connectors are

secure

5 Backprobe connector S50 – X1 pin 7 with a test lamp (refer Note 1).

Does the test lamp illuminate? Go to Step 10 Go to Step 6

6 Backprobe connector X302 pin 3 with a test lamp (refer to Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 540 between

connectors

X302 pin 3 and

S50 – X1 pin 7

(refer to Note 2) Go to Step 7

7 Backprobe connector X200 pin 19 with a test lamp (refer to Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 540 between

connectors X200

pin 19 and

X302 pin 3 (refer to

Note 2) Go to Step 8

Seat Assemblies Page 1A7–32

Page 1A7–32

Step Action Yes No

8 1 Remove circuit breaker F2 from the passen ger compartment

fuse and relay panel assembly. Repair or replace

circuit 540 between

circuit breaker F2

and connector

X200 pin 19 (refer

to Note 2) Go to Step 9

9 1 Remove fusible link F105.

2 Using a test lamp, probe connector X18-105 (refer to Note 1).

Does the test lamp illuminate?

Repair or replace

circuit 342 between

fusible link F105

and circuit breaker

F2 (refer to Note 2)

Repair or replace

circuit 1 between

the battery and

fusible link F105

(refer to Note 2)

10 1 Remove the driver’s seat adjustment switch from the seat, refer

to 5.3 Front Seat Outer Side Cover Assembly.

2 Test the driver’s seat adjustment switch, refer to 2.5 Four-way

Seat Adjustment Switch Test.

Is the driver’s seat adjustment switch serviceabl e? Go to Step 11

Replace the

driver’s seat

adjustment switch,

refer to 5.3 Front

Seat Outer Side

Cover Assembly

11 Ensure ground point X118 – GP12 (located in the middle of the

transmission tunnel) is secure and has go od contact with the vehicle

structure.

Is the ground point secure to the vehicle with a good contact? Go to Step 12 Repair ground poi nt

12 1 Backprobe connector X302 pin 1 with a test lamp (refer Note 1).

2 Operate the driver’s seat adjustment switch in any of the

available directions.

Does the test lamp illuminate?

Repair or replace

circuit 650 between

connector X302 pin

1 and ground point

X118 – GP12 (refer

Note 2)

Repair or replace

circuit 650 between

connectors

S50 – X1 pin 6 and

X302 pin 1 (refer

Note 2)

When all diagno sis an d repairs are completed, ch eck the system for correct op eration.

Seat Assemblies Page 1A7–33

Page 1A7–33

Front/Rear of the Driver's Seat Does Not Raise and/or Lower

Introduction

This test is used to aid in diagnosing the front and/or the rear of the driver's seat not raising and/or lowering. The test

diagnoses the driver’s seat adjustment switch and the motor circuits.

Refer to Wiring Diagram – Four-way Driver’s Seat, Except Reg Cab and Utility and

Connector Chart – Four- way Driver’s Seat, Exce pt Reg Cab and Utility to aid in diagnosis.

Test Description

The following numbers refer to the step numbers in the diagnostic table:

1 Checks if the driver's seat adjustment switch operates the seat in any direct ion. Isolates whether there is a battery

or ground fault affecting the seat operation.

2 Checks if all the connectors required for the seat to operate effectively are in place a nd positively connected.

3 Checks if the driver's seat adjustment switch is serviceable.

4 Confirms whether the rear of the seat raises or lowers. Isolates if the seat rear lift motor and circuit of the seat is the

fault.

5 Confirms whether the front of the seat raises or lo wers. Isolates if the seat front lift motor and circuit of the seat is

the fault.

6 Checks if there is battery power to the seat rear lift motor at connector Y69 – X1 pin 1. Isolates if there is a fault in

circuit 282 that supplies battery power to the motor to raise the rear of the seat.

7 Checks if there is battery power to the seat rear lift motor at connector Y69 – X1 pin 5. Isolates whether the fault is

in circuit 283 that supplies battery power to the motor to lower the rear of the seat or the motor is faulty. As

reversing the polarity changes the direction of the motor, this Step also confirms the grou nd circuit from Step 6 is

serviceable.

8 Checks if there is battery power to the seat front lift motor at connector Y67 – X1 pin 1. Isolates if there is a fault in

circuit 286 that supplies battery power to the motor to raise the front of the seat.

9 Checks if there is battery power to the seat front lift motor at connector Y67 – X1 pin 5. Isolates whether the fault is

in circuit 287 that supplies battery power to the motor to lower the front of the seat or the motor is faulty. As

reversing the polarity changes the direction of the motor, this Step also confirms the grou nd circuit from Step 8 is

serviceable.

Diagnostic Table Notes

1 For all wiring harness fault diagnoses, refer to Section 12P Wiring Diagrams.

2 For wiring harness repairs, refer to Section 12P Wiring Diagrams.

3 Refer to Section 12O Fuses, Relays and W iring Harnesses for harness routeing.

4 If the fault is deemed to be intermittent, refer to Section 12P Wiring Diagrams.

Seat Assemblies Page 1A7–34

Page 1A7–34

Diagnostic Table

Step Action Yes No

1 Does the driver's seat adjustm ent switch operate the seat correctly in

any of the four directions?

Go to Step 2

Refer to None of

the Driver’s Seat

Adjustment Switch

Functions Operate

in this Section

2 Are the following connectors secure ?

• S50

• Y69

• Y67 Go to Step 3

Ensure the

connectors are

secure

3 1 Remove the driver's seat adjustment switch from the seat, refer

to 5.3 Front Seat Outer Side Cover Assembly.

2 Test the driver's seat adjustment switch, refer to 2.5 Four-way

Seat Adjustment Switch Test.

Is the driver's seat adjustment switch serviceable? Go to Step 4

Replace the driver's

seat adjustment

switch, refer to 5.3

Front Seat Outer

Side Cover

Assembly

4 Operate the driver's seat adjustment switch to raise or lower the rear

of the seat.

Does the rear of the seat raise and lower? Go to Step 5 Go to Step 6

5 Operate the driver's seat adjustment switch to raise or lower the front

of the seat.

Does the front of the seat raise and lo wer? System serviceable Go to Step 8

6 1 Backprobe connector Y69 – X1 pin 1 with a test lamp (refer to

Note 1).

2 Operate the driver's seat adjustment switch to raise the rear of

the seat.

Does the test lamp illuminate? Go to Step 7

Repair or replace

circuit 282 (refer to

Note 2)

7 1 Backprobe connector Y69 – X1 pin 5 with a test lamp (refer to

Note 1).

2 Operate the driver's seat adjustment switch to lower the rear of

the seat.

Does the test lamp illuminate?

Replace the seat

rear lift motor, refer

to 5.15 Front Seat

Lift Motor

Assemblies

Repair or replace

circuit 283 (refer to

Note 2)

8 1 Backprobe connector Y67 – X1 pin 1 with a test lamp (refer to

Note 1).

2 Operate the driver's seat adjustment switch to raise the front of

the seat.

Does the test lamp illuminate? Go to Step 9

Repair or replace

circuit 286 (refer to

Note 2)

9 1 Backprobe connector Y67 – X1 pin 5 with a test lamp (refer to

Note 1).

2 Operate the driver's seat adjustment switch to lower the front of

the seat.

Does the test lamp illuminate?

Replace the seat

front lift motor, refer

to 5.15 Front Seat

Lift Motor

Assemblies

Repair or replace

circuit 287 (refer to

Note 2)

When all diagno sis an d repairs are completed, ch eck the system for correct op eration.

Seat Assemblies Page 1A7–35

Page 1A7–35

2.4 Electrical Diagnosis – Four-way Driver’s

Seat, Reg Cab and Utility

The charts in this Section are used to aid in diagnosing faults on four-way driver’s seat assemblies. To aid in the use of

the diagnostic tables, refer to Wiring Diagra m – Four-way Driver’s Seat, Reg Cab and Utilit y and

Connector Chart – Four-way Driver’s Seat, Reg Cab and Utility.

Wiring Diagram – Four-way Driver’s Seat, Reg Cab and Utility

Figure 1A7 – 10

Connector Chart – Four-way Driver’s Seat, Reg Cab and Utility

Figure 1A7 – 11

Seat Assemblies Page 1A7–36

Page 1A7–36

None of the Driver’s Seat Adjustment Switch Functions Operate

Introduction

This test is used to aid in diagnosing the driver’s seat adjustment switch when none of the switch functions operate. The

test diagnoses the driver’s seat adjustment switch and associated power and ground circuits.

Refer to Wiring Diagram – Four-way Driver’s Seat, Reg Cab and Utilit y and

Connector Chart – Four-way Driver’s Seat, Reg Cab and Utility to aid in diagnos is.