ALL MODELS
ELECTRONIC CLIMATE
CONTROL AIR CONDITIONING
MODEL
NOTE:- CONVENTIONAL CURRENT FLOW IS ASSUMED IE.
FLOWING FROM BATTERY +VE TO BATTERY -VE
MOTOR
DRIVER
FAN SPEED
FEEDBACK
MAX. FAN
SWITCH
FAN SPEED
CONTROL
ELECTRONIC CLIMATE
CONTROL MODULE
BLOWER
CONTROL
BLOWER
RELAY
30 86
8587
30 85
86
87
85
30
87A
87 86
5
1
2
3
32
1
5
30 86
85
87
LOC. E9 (SEDAN)
LOC. E10 (WAGON)
YB39
BV/R
(185) (192)
HEATED
REAR
WINDOW
YR1
YR1
30 86
85
87
BRIGHTER
DARKER
AUTO
OFF
PARK
ON
AUTO
OFF
PARK
ON
FJ
FQ
FY
F4
R
YB192
YB192
(2H)
F11
94112
YB93
YB93
YB74 YB59YB58
BR/W BR
(9)
(19)
IGNITION (+VE)
REMOTE TEMP CONTROL
EARTH
(FOOT 1)
(WATER)
(FOOT 2)
(FACE 1)
(FACE 2)
7
8
5
3
2
12
+IGN.
+IGN.
+3.5V
AMBIENT SENSOR
INTAKE SENSOR
EARTH SENSOR
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
EARTH
EARTH (ILLUM. RETURN)
YB94
B/Y
B
R
G/W
W
T
W/B
LG/B
(735)
(763)
(62)
(188)
(187)
(186)
(184)
(155)
YE73
YE73YB91
YB94
Y/B YB32
YE101
YE101
YE111
YE105
A/C
COMPRESSOR
B/G
G
B
B
(151)
(150)
(59)
(52)
B/R
B/Y
B/R
G
B/R
3
2
4
YB32
YB64
YB64
YB14
YE43
YE43
(64)
(155)
(346)
TEMP
DOWN
FAN
DOWN
TEMP
UP
FAN
UP
100
330
1K
560
(342)
(51)
Y
R
YB14
(2A)
YB174
ENGINE 12V BUS (1040)
(366)
LG/B
YB188
IGNITION
SWITCH
BLU (49)
YE103
YE103
7
O/B
(473)
G
B/W
Y
BLU/R
(356)
(362)
(357)
(364)
O/B
(740)
5
10B
1
LOC. E1
LOC. E3
LOC. E3
LOC. E3
LOC. E3
F31
ELECTRONIC
GROUND
10
LOC. E3
POWER
GROUND
BODY CONTROL
MODULE
(840)
O/W
FS
(151)
(155)
B/G
B/Y
(8)
GY
(44)
P/BLU
F13
HEATED
REAR
WINDOW
RELAY
AUTO
LIGHTS
OFF
SERIAL DATA
(1220)
G/W
A/C
RELAY
A3
SERIAL DATA
R/B (1221)
YB128
DIAGNOSTIC
CONNECTOR
YE112
(3)
P
F22
O
(40)
6
1
(292)
B/R
F33
(152)
B/W
E.F.I.
RELAY YE39
YE39
F14
(39)
P/B
YB44
YB44
B(1150)
LIGHT
SWITCH
AUTO
LIGHTS
(308)
28
9
2
2
SDI
INSTRUMENTS
A.B.S.
& T.C.S.
MODULE
12
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
AIR MIX DOOR MOTOR
MOTOR
DRIVER
+IGN.
+3.5V
AIR MIX
MOTOR
R.H.S
AIR MIX
MOTOR
L.H.S
REMOTE
KEY
RECEIVER
(155)
YB175 YB174 YB176
YB176 YB175
YB175YB176
12
YB66 YE98
YB41
YB41
YB33
YB33
YB95
YB95
YB175
RX DATA
LIGHT SENSOR
10
8
7
(AUTO LIGHTS CALAIS ONLY)
W/R
YB91
YB87 YB89 YB87 YB89
YB87YB89YB87
YB87
YB87
(272)
(266)
(271)
YB175
BR/G
Y
Y/B
YB94
YB94
B/Y
O/Y
(479)
P
(439)
AMBIENT SENSOR
E.C.C
AMBIENT
AIR
TEMP
SENSOR
E.C.C
INTAKE
AIR
TEMP
SENSOR
E.C.C
IN-CAR
AIR
TEMP
SENSOR
YB55
YB55 YE105
(FRESH/RECIRC)
BLU/B
(734)
B/R
(750)
REFER
SHT. 5.
REFER
SHT. 3,4,5,6,7,
15,16,17,21.
REFER
SHT. 16.
REFER
SHT. 3,5,6,7,8,9,11,
12,13,14,15,16,
17,18,19,21,22.
REFER
SHT.
6,7,11,16,17.
11
FU
FT
YE110
F6
BODY
CONTROL
MODULE
YE118
O/BLU (204)
(208)
O/B
YE104
O/BLU
(250)
BLU/Y
(533)
B/P
(157)
BLU/W
(304)
ENGINE
COOLING
FAN RELAY
(LOW SPEED)
ENGINE
COOLING
FAN RELAY
(HIGH SPEED)
LOC. E3
LOC. E5/E15
LOC. E2
LOC. E3
LOC. E3
(361)
P
R/W
(367)
(223)
BLU
(224)
BR
(222)
Y/BLU
19 15 11 18 1 2 17 34
810 9 7 6 20 5
++
--
FAN 1
FAN 2
R(2K)
YB32
YE114
YE114 YE114
YE114
YE114
YE114
YE114
YE114
10
YE120
YE120
+3.5V
+IGN.
BLOWER
CAPRICE
ONLY
MOTOR
YB194
F4
ECOTEC V6
POWER TRAIN
CONTROL
MODULE
A/C
ENABLE FAN
YE123
J2-33J2-43
GEN 3 V8
POWER TRAIN
CONTROL
MODULE
A/C
ENABLE FAN
POWER TRAIN
INTERFACE MODULE
(P.I.M)
V8 ONLY
SERIAL DATA
6
YB215
YB110
YB110
NON
RESETABLE
THERMAL
FUSE
WH
PARK
LAMPS
RELAY VACUUM
SOLENOID
PACK
AMBIENT
SOLAR
SENSOR
REMOTE
RECEIVER
MODULE
BLUE FUSIBLE LINK
(203)
R
REFER SHT 4.
STARTING & CHARGING
YE10
REFER
SHT.
11,16,17.
REFER
SHT. 4,5,13,14,21.
YE114
B
B
Y
G
0.47uF
SUPPRESSION
CAPACITORS YE140
FAN 1
340
YE139
B
YE139
B
BLU
YE140
BLU
FAN 2
300
FOR S/C V6 COOLING
FANS REFER SHT. 5D.
FOR V8 COOLING
FANS REFER SHT. 5F.
BATTERY
+
-
15a 15 50
30
OFF/ON
LOCK
ACC
IGN
START
V
(355)
(292)
YE39 (M.W.H) YE43 (M.W.H) YE73 (M.W.H) YE98 (M.W.H) YE103 (M.W.H) YE104 (M.W.H) YE105 (M.W.H)
YE110 (M.W.H) YE112 (M.W.H)
YB14 (BLOWER MOTOR HARNESS)
YB32 (M.W.H)
YB41 (M.W.H) YB66 (M.W.H)
YB59 (AUDIO REAR REMOTE HARNESS)
YB174 (M.W.H)
YB175 (M.W.H)
YB176 (M.W.H) YB192 (M.W.H)
YB194 (POWER TRAIN HARNESS)
E.F.I RELAY ENGINE COOLING FAN RELAY (HIGH SPEED) AMBIENT AIR SENSOR A.B.S & T.C.S MODULATOR AND CONTROL MODULE ENGINE COOLING FAN RELAY (LOW SPEED) ENGINE COOLING FAN CONNECTOR A/C COMPRESSOR
ENGINE CONNECTOR 1 ENGINE CONNECTOR 3
BLOWER MOTOR BLOWER MOTOR CONTROL
HEATED REAR WINDOW RELAY INSTRUMENTS
RADIO & CLIMATE REMOTE CONTROL
B.C.M CONNECTOR 2
B.C.M CONNECTOR 3
B.C.M CONNECTOR 4
YB44 (M.W.H)
IGNITION SWITCH
YR1 (BODY HARNESS)
PARK LAMPS RELAY HEATED REAR WINDOW CONNECTOR
P.C.M. CONNECTOR 3
YE111 (M.W.H)
ENGINE CONNECTOR 2
YB188 (POWER TRAIN HARNESS)
P.C.M CONNECTOR 2
YB55 (E.C.C CONTROL HARNESS)
E.C.C INTAKE AIR TEMP
YB64 (M.W.H)
BLOWER MOTOR RELAY
YE118 (BATTERY HARNESS)
ENGINE COOLING FAN HARNESS
YE139 (ENGINE COOLING FAN HARNESS)
LOW SPEED ENGINE COOLING FAN 1
YE114 (M.W.H)
LOCATION E3 EARTH CONNECTOR
YB215 (POWER TRAIN HARNESS)
POWER TRAIN INTERFACE MODULE
YE123 (POWER TRAIN HARNESS)
P.C.M CONNECTOR 2
A/C RELAY
YE101 (M.W.H)
YB33 (M.W.H)
LIGHT SWITCH
A/C COMPRESSOR SUPPRESSION DIODE
YE120 (POWER TRAIN HARNESS)
HIGH SPEED ENGINE COOLING FAN 2
YE140 (ENGINE COOLING FAN HARNESS)
YB110 (M.W.H)
BLOWER MOTOR HARNESS CONNECTOR
Y(51)
R(2)
DATA LINK CONNECTOR
YB128 (M.W.H)
(863)
O/B
BLU/B R/B(1221)
(740)
16
9
(1220)
(155)
B/Y G/W
W/B (451)
B(150)
Y(1049)
1
8
(2)
R
Y(51)
V
LBLU (14)
(140)
O/R
Y(173)
(782)
BR(90)
O/B
(151)
(440)
(15)
BLU
O/V
B/G Y(196) (473)
5
12
6
1
LBLU
Y/R
O/BLU
B
BLU/W
W/BLU
(43)
(39)
(97)
(83)
(94)
O/W
Y/B
B/R
(161)
(143)
(640)
(1150)
(260)
(1144)
(840)
Y
P/B
GY
LBLU
(494)
W(160)
V/R
R/B
G/W
B/Y
GY/B
(229)
(1221)
(1220)
(556)
(96)
(261) G/W
Y
Y/B
W
W/R
(266)
(1220)
(272)
(717)
(308)
BR/G (271)
R/W
28
20
6
12
1
7
13
21
GY/R (1391)
8
4
5
1
GY
B/Y
O/B
LBLU
(155)
(8)
(740)
(263)
(1128)
(28)
B/Y
B/W
GY/BLU(492)
W(1138)
(481)
(417)
(740)
R
BLU
O/B
(1456)
LG
V/W(415) Y
(1227)
B/Y (410) BR(472)
(259)
(750)
(750)
(1221)
B/R
B/R
R/B
G/B
(39)
P
(465)
G/W
(416)
GY
(740)
O/B
1
2
43
5
(49)
BLU
(840)
O/W BR (9)
O/W (840)
LG/B (366)
G
(843)
B/W
F16
B/Y
BR/Y
(1228)
(469)
Y
(451)
F1
P
(841)
BLU
V
E1
LBLU (845)
BLU
B
(1226)
W/B
BLU/W
V
R
(435)
(31)
(1229)
GY
(1224)
Y(846)
GY
(842)
(452)
(774)
(304)
BR/Y
(411)
(439)
GY/BLU
BLU
(1225)
E16
(1427)
(429)
(844)
B/O
(434)
OR
AUTO
GY/BLU
GY
(1434)
MAN
(776)
W
BLU/W
Y
GY (771)
(772)
(773)
W/B(451)
Y(1049)
B/R (750)
P(39)
R/B(1221)
GY/BLU
(1434)
GY
(434)
(AUTO)
(MAN)
(151)
(64)
B/R
B/G
(51)
Y
(151)
B/G
GY(8)
(717)
WW/R(308)
BR/BLU(42)
(49)
BLU
W/B (147)
B(1150)
OR
EXECUTIVE
B/R
P/BLU
V/R
O
(192)
(40)
(44)
87 85
87A
86
30
BR(4)
V(5)
(2)
R
(3)
P
W/B (763) (62)
T(150)
(44)
(51)
BY/B
Y
(52)
P/BLU
87
30
86
85
T
BLU/B
BR/W
(234)
(25)
1
(14)
(10)
(875)
(155)
10
(1340)
G/W
(44)
(121)
(8)
(30)
BLU/Y
G
O/Y
P/BLU
BR/R
V/W
(33)
(946)
(1220)
(88)
(15)
(123)
(85)
(19)
GY
W
V/R
11
BR
BR/O
Y/R
B/Y
LBLU
20
BLU
(342)
(346)
(43)
(156)
(701)
(315)
G
B/R
Y
B/BLU
B/Y
W
YB87 (M.W.H)
E.C.C. CONNECTOR
(1220)
(52)
(44)
(735)
(342)
(734) (19)
(64)
(51)
(292)
(155)
(8)
P/BLU
Y/B
G/W
LG/B
G
BLU/B
GY
B/Y
B/R
Y
B/R
BR/W
7
1
6
12
YB89 (E.C.C CONTROL HARNESS)
A/C CONTROL CONNECTOR
(362)
(361)
(357) (364)
GB/W
P
Y
(356)
BLU/R
(763)
(187) (222)
W/B
G/W Y/BLU T
(188)
(186)
(184)
(223)
(367)
R/W
BLU
B
R
W
BR(224)
(62)
1
11
10
20
YB91 (M.W.H)
INTAKE AIR TEMP SENSOR
(155) BLU/B (734)
B/Y
YB93 (E.C.C CONTROL HARNESS)
VACUUM SOLENOID PACK
(367)
R/W
B/W
(364)
G
(357)
(356)
BLU/R Y (361)
P
(362)
YB94 (E.C.C CONTROL HARNESS)
AIR MIX MOTOR
(187)
(184)
(188)
G/W
W
B
R.H R.H
(222)
(223)
L.H
L.H
Y/BLU BLU
(62)
T
(186)
R
R.H
(224)L.H
BR
YB95 (M.W.H)
SOLAR SENSOR
(266)
(740)
Y
O/B
(272)
(271)
BR/G
Y/B
1
2
4
3
5
(366)
(439)
LG/B
P
G
P
(59)
(439)
86
30
87
85
87A
(1040)
O/BLU
(250)
ENGINE 12V BUS
BLU/Y(533)
O/B (473)
B/R (157)
A
B
BLU/Y (533)
(250)
O/BLU
O/W
(304)
(1426)
BLU/W
G/W
(339)
P/BLU
(465)
(123)
V/W
(1427)
B/W
Y(1049)
(482)
(481)
R
LG
GY
G
(434)
(129)
P(439)
(59)
(366)
LG/B
GW/B (451)
(1221)
(42)
(121)
BR/BLU
BR/R
R/B
O/B
LG
P/B
BLU
(740)
(24)
(39)
(774)
LBLU (411)
S/C ONLY
(151)
B/G
(157)
B/R
(150) (155)
BB/Y
(152)
B/W
(157)
B/R
(204)
(208) O/BLU
O/B
G(59)
B/R (750)
(750)
(1228)
(1229)
(465)
(121)
(259)
G/B
BR
G/W
GY/BLU
R
B/R
(418)
BR
(59)
(832)
G
T
(831)
(417)
(472)
(976)
(974)
(432)
(428)
(631)
BLU
BR G/Y
BLU/W
LG
BR/W
W/B
LG W
(977)
Y
(971)
BLU/W
W
B/R (750)
(304)
(792)
(1223)
(1222)
(123)
(1227)
(469)
(331)
Y/B
LG
V/W
B/Y
G/O
BR/W
(1687)
GY/B
(366)
LG/B
GY/R (422)
V
(442)
(444)
(443)
(975)
(972)
(978)
(1224)
(973)
(959) LG/W
LG/B
LBLU/B
GY (773)
BR/Y
BLU
G
Y/B
LBLU
(958)
BR
(441)
LBLU
1
41
40
80
J2
RED
Y(838)
B(533) (208)
BLU
Y(250) (204)
G
86
30 87A
87
85
B/W
P/B
O/Y
(152)
(39)
(479)
(1040)
ENGINE 12V BUS
86
30
87
85
87A
B/R (157)
BLU/W(304)
P/B(39)
O/BLU (250)
(155)
(735) B/Y
LG/B
BA1
16
27
19
20
(885)
(884)
(833)
(830)
(873)
(872)
(883)
(882)
B
BLU
W
R
BR
GY
Y
(855)
(20)
(1426)
(863)
(1220)
BLU/B
G/W
O/W
BLU/R
R
V
R/W
BR/R
B/W
G
Y/R
B
R
R
B/O
(1429)
(121)
(1427)
(875)
(88)
(150)
(2R)
(2R)
(154)
GY/B (1687)
(192)
OR
(185)
V/R
B
26 31
15
BODY HARNESS CONNECTOR
YB39 (M.W.H)
(151)
(782)
(783)
(1220)
(116)
(199)
(540)
Y/BLU
BR/B
O/B
LG
BLU/O
BLU/B
V/R
O/Y
V
G
BR
BLU/R
BLU
LBLU
LG
G
(15)
(24)
(46)
(115)
(1240) (322)
(120)
(192)
(9)
(20)
(14)
(117)
(641)
(200)
(43)
(701)
(315)
G/W
B/G
W
B/Y
Y
O/W
V
Y/B
YB74 (M.W.H)
BODY HARNESS CONNECTOR
GY
G
O/B
W/G
T
T
P
LBLU
B/Y
R/Y
(30)
(174)
(1145)
(118)
(342)
(201)
(139)
(411)
(155)
(317)
(47)
(882)
(883)
(884)
(885)
(155) (33)
(299)
O/BLU
B
BLU
V
Y
B/Y BR/O
BR/O
B/G
BLU/R
Y
(255)
(246)
(321)
(59)
G(750)
B/R
A
1
2
RELAY & FUSE PANEL
FT
FU
YB59
RADIO &
CLIMATE
CONTROL
CONNECTOR
YB58
TELEMATICS &
AUDIO REMOTE
PATCH HARNESS
CONNECTOR (1)
CAPRICE
SHOWN
YR1
HEATED REAR
WINDOW
CONNECTOR
YB188
P.C.M.
CONNECTOR (2)
YB194
P.C.M.
CONNECTOR (3)
VIEW
H
YB215
POWERTRAIN
INTERFACE
MODULE
CONNECTOR
VIEW
I
E.C.C. / DUAL ZONE
CONTROL ASSEMBLY
YB87
E.C.C.
CONNECTOR
YB89
A/C CONTROL
CONNECTOR
YB175
B.C.M.
CONNECTOR (3)
YB176
B.C.M.
CONNECTOR (4)
YB174
B.C.M.
CONNECTOR (2)
YB39
BODY
HARNESS
CONNECTOR
VIEW
E
YE111
ENGINE
CONNECTOR (2)
YE112
ENGINE
CONNECTOR (3)
YE105
A/C
COMPRESSOR
CONNECTOR
YE104
ENGINE
COOLING FAN
CONNECTOR
YE118
ENGINE
COOLING FAN
HARNESS
CONNECTOR
ENGINE COOLING
FAN HARNESS
"V6 & V6 S/C"
WH12P10B
YB44
IGNITION
SWITCH
CONNECTOR
YB128
DATALINK
CONNECTOR
VIEW
D
FUSE 4
FUSE 13
FUSE 14
FUSE 22
FUSE 11
YB192
PARK LAMPS
RELAY
YB64
BLOWER
RELAY
YB41
HEATED
REAR
WINDOW
RELAY
RELAY & FUSE PANEL
FUSE 31
FUSE 33
FJ
FS
FQ
FY
YE39
E.F.I.
RELAY
YE103
ENGINE
COOLING
FAN RELAY
(LOW SPEED)
YE43
ENIGNE
COOLING
FAN RELAY
(HIGH SPEED)
YE101
A/C RELAY
RELAY & FUSE PANEL
YE114
LOCATION
E3 EARTH
CONNECTOR
HARNESS SYMBOLS: (BAT.)
(M.W.H.) (B.) (E.C.C.)(P.T.)
WIRING DIAGRAMS
YE73
AMBIENT
AIR SENSOR
CONNECTOR
YB94
AIR MIX
MOTOR
CONNECTOR
YB55
E.C.C.
INTAKE AIR
TEMPERATURE
CONNECTOR
VIEW
B
YB93
VACCUUM
SOLENOID
PACK
CONNECTOR
HVAC UNIT
YE123
P.C.M.
CONNECTOR (2)
(RED)
"GEN III"
YE139
LOW SPEED
ENGINE
COOLING FAN
CONNECTOR
YE140
HIGH SPEED
ENGINE
COOLING FAN
CONNECTOR
"V6 SHOWN"
VIEW
A
(E.C.)
VIEW
C
YB95
SOLAR
SENSOR
CONNECTOR
YB91
INTAKE AIR
TEMPERATURE
SENSOR
CONNECTOR
YB33
LIGHT SWITCH
CONNECTOR
YB66
INSTRUMENT
CONNECTOR
F
G
E
D
H
I
"V6 SHOWN"
YE110
ENGINE
CONNECTOR (1)
YE98
A.B.S. & T.C.S.
MODULATOR
& CONTROL
MODULE
CONNECTOR
YE120
A/C
COMPRESSOR
SUPPRESSION
DIODE (TAPED)
CONNECTOR
"V6" SHOWN
"V6 S/C"
SIMILAR
C
A
B
VIEW
J
VIEW
G
YB110
BLOWER
MOTOR
HARNESS
CONNECTOR YB14
BLOWER
MOTOR
CONNECTOR
BLOWER
MOTOR
HARNESS
YB32
BLOWER
MOTOR
CONTROL
CONNECTOR
VIEW
F
YE104
ENGINE
COOLING FAN
CONNECTOR
YE118
ENGINE
COOLING FAN
HARNESS
CONNECTOR
"GEN 111"
YB74
BODY
HARNESS
CONNECTOR
J
(A.R.R.)
YB58 (BODY HARNESS)
TELEMATICS & AUDIO REMOTE
PATCH HARNESS CONNECTOR 1
(346)
(24)
B/R
LG
Y(43)
WW
P
(315)
(125)
(139)
B/Y (701)
BLU/O(46)
Y/BLU
(116)
BR/B
BR/W
GY/W
(199)
(1145)
(126)
BLU/B (115)
(156)
B/BLU
G(342)