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• MODEL SELECTION INDEX
• MY2006 VZ Series - Service Information
• Section 6C4-2 Engine Management GEN IV V8 – Diagnostics
  • 1 General Information
    • 1.1 Diagnostic System Check
    • 1.2 Diagnostic Trouble Code Tables
    • 1.3 Multiple DTCs Fault Condition
    • 1.4 Symptoms Diagnostics
    • 1.5 Diagnostic Trouble Codes
      • Type A – Emission Related DTCs
      • Type B – Emission Related DTCs
        • Conditions for Clearing Type A or Type B DTCs
      • Type C – Non-Emission Related DTCs
        • Condition for Clearing the Type C DTCs
      • Current DTCs
      • History DTCs
  • 2 Wiring Diagrams and Connector Charts
    • 2.1 Wiring Diagrams
    • 2.2 Connector Chart
  • 3 Diagnostic Starting Point
    • 3.1 Basic Requirements
      • Basic Knowledge Required
      • Basic Tools Required
    • 3.2 Diagnostic Precautions
    • 3.3 Preliminary Checks
    • 3.4 Diagnostic System Check
  • 4 Symptom Diagnostics
    • 4.1 Symptom Diagnosis Table
    • 4.2 Intermittent Fault Conditions
      • Description
      • Diagnostic Table
    • 4.3 Backfire
      • Description
    • 4.4 Cranks but does not run
      • Definition
    • 4.5 Cuts Out, Misses
      • Description
    • 4.6 Detonation/Spark Knock
      • Description
    • 4.7 Dieseling, Running on
      • Description
    • 4.8 Hard Start
      • Definition
    • 4.9 Hesitation, Sag and Stumble
      • Description
    • 4.10 Lack of Power, Sluggishness or Sponginess
      • Description
    • 4.11 Poor Fuel Economy
      • Description
    • 4.12 Rough, Unstable, Incorrect Idle or Stalling
      • Description
    • 4.13 Surges / Chuggles
      • Description
    • 4.14 Fuel Pump Not Operating
      • Circuit Description
      • Fuel Pump Not Operating Diagnostic Aids
        • Additional Information
        • Test Description
      • Fuel Pump Not Operating Diagnostic Table
    • 4.15 Fuel Pump Continuously Operating
      • Circuit Description
      • Fuel Pump Continuously Operating Diagnostic Aids
        • Additional Information
        • Test Description
      • Fuel Pump Continuously Operating Fault Condition Diagnostic
    • 4.16 Automatic Transmission Functional Check procedure
      • Description
    • 4.17 Automatic Transmission Power / Economy Switch
      • Circuit Description
      • Automatic Transmission Power / Economy Switch Diagnostic Aid
        • Additional Information
      • Automatic Transmission Power / Economy Switch Diagnostic Tab
  • 5 Functional Checks
    • 5.1 General Information
    • 5.2 Fuel Injector Coil Test
      • Engine Coolant Temperature Between 10 – 3
      • Engine Coolant Temperature Outside 10 – 3
    • 5.3 Fuel Injector Balance Test
      • Fuel Injector Balance Test – With Tech 2
      • Fuel Injector Balance Test – Without Tech 2
        • Fuel Injector Pressure Drop Calculation
        • Fuel Injector Pressure Drop Analysis
    • 5.4 Fuel Injector Leak Down Test
    • 5.5 Alcohol/Contaminants in Fuel Diagnosis
      • Without Special Tool
        • Description
        • Alcohol in Fuel Testing Procedure
        • Particulate Contaminants in Fuel Testing Procedure
      • With Special Tool
        • Description
        • Test Procedure
    • 5.6 Crankshaft Position (CKP) System Variation Learn Procedu
      • Description
    • 5.7 Electronic Ignition (EI) System Diagnosis
      • Circuit Description
      • Additional Information
      • Test Description
      • Diagnostic Table
  • 6 Diagnostic Trouble Code Tables
    • 6.1 DTC List in Ascending Order
    • 6.2 DTC P0016
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0016
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0016
    • 6.3 DTC P0030, P0036, P0050 P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, P0161
      • DTC Description
      • Circuit Description
      • Additional Information
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
        • DTC P0030, P0036, P0050 or P0056
        • DTC P0053, P0054, P0059, P0060
        • DTC P0135, P0141, P0155, P0161
      • Conditions for Clearing the DTC
      • Test Description
      • DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060,
    • 6.4 DTC P0068
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0068
      • Conditions for Setting the DTC
        • DTC P0068
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Conditions
      • DTC P0068
    • 6.5 DTC P0101, P0102, P0103, P1101
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0101
        • DTC P0102
        • DTC P0103
        • DTC P1101
      • Conditions for Setting the DTC
        • DTC P0101
        • DTC P0102
        • DTC P0103
        • DTC P1101
      • Additional Information
      • DTC P0101 to P0103 and P1101 Diagnostic Table
    • 6.6 DTC P0106, P0107, P0108
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0106
        • DTC P0107
        • DTC P0108
      • Conditions for Setting the DTC
        • DTC P0106
        • DTC P0107
        • DTC P0108
      • Conditions for Clearing DTCs
      • Additional Information
      • Test Description
      • Diagnostic Table for DTCs P0106, P0107 and P0108
    • 6.7 DTC P0112, P0113, P1101
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0112
        • DTC P0113
      • Conditions for Setting the DTC
        • DTC P0112
        • DTC P0113
      • Conditions for Clearing the DTCs
      • Additional Information
      • Test Description
      • Diagnostic Table for the Intake Air Temperature Sensor Circu
    • 6.8 DTC P0116, P0117, P0118, P0128, P1258
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0116
        • DTC P0117, P0118 and P1258
        • DTC P00128
      • Conditions for Setting the DTC
        • DTC P0116
        • DTC P0117
        • DTC P0118
        • DTC P0128
        • DTC P1258
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0116, P0117, P0118, P0128 and P1258 Diagnostic Table
    • 6.9 DTC P0120, P0121, P0122, P0123, P0220, P0222, P0223, P15
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0120, P0121 or P0220
        • DTC P0122, P0123, P0222 and P0223
      • Conditions for Setting the DTC
        • DTC P0120
        • DTC P0121
        • DTC P0122
        • DTC P0123
        • DTC P0222
        • DTC P0223
        • DTC P1516
        • DTC P2101
        • DTC P2138
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • Diagnostic Table for the TP Sensor Circuit DTCs
    • 6.10 DTC P0131, P0132, P0133, P0134, P0137, P0138, P0140, P0
      • DTC Descriptors
      • Circuit Description
        • Heated O2 Sensor
      • Conditions for Running the DTC
        • DTC P0131, P0137, P0151 or P0157
        • DTC P0132, P0138, P0152 or P0158
        • DTC P0133 or P0153
        • DTC P0134, P0140, P0154 or P0160
        • DTC P1133 or P1153
        • DTC P2A01 or P2A04
      • Conditions for Setting the DTC
        • DTC P0131, P0137, P0151 or P0157
        • DTC P0132, P0138, P0152 or P0158
        • DTC P0133 or P0153
        • DTC P0134, P0140, P0154 or P0160
        • DTC P1133 or P1153
        • DTC P2A01 or P2A04
      • Conditions for Clearing the DTC
      • Additional Information
      • Diagnostic Table for the Heated Oxygen Sensor Reference Circ
    • 6.11 DTC P0171, P0172, P0174, P0175
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTCs P0171, P0172, P0174, and P0175
      • Conditions for Setting the DTC
        • DTCs P0171 and P0174
        • DTCs P0172 and P0175
      • Conditions for Clearing the DTC
      • Additional Information
      • Diagnostic Table for the Fuel Trim Reference Circuit DTCs
    • 6.12 DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
        • DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207 or P0208
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0201 to P0208, Diagnostic Table
    • 6.13 DTC P0230
      • DTC Description
      • Circuit Description
      • Diagnostic Aids for the Fuel Pump Control Circuit DTCs
        • Conditions for Running the DTC
        • Conditions for Setting the DTC
        • Conditions for Clearing the DTC
        • Additional Information
        • Test Descriptions
      • Diagnostic Table for the Fuel Pump Control Circuit DTCs
    • 6.14 DTC P0300, P1380, P1381
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTCs
      • Conditions for Setting the DTC
      • Action Taken When the DTC Sets
      • Conditions for Clearing the MIL/DTC
      • Additional Information
        • DTCs P0300 and P1380
        • DTC P1381
        • Test Description
      • DTC P0300, P1380 and P1381 Diagnostic Table
    • 6.15 DTC P0315, P0335, P0336 and P0654
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTCs
        • DTC P0315
        • DTC P0335
        • DTC P0336
      • Conditions for Setting the DTCs
        • DTC P0315
        • DTC P0335
        • DTC P0336
      • Conditions for Clearing the DTCs
      • Additional Information
      • Diagnostic Table for the CKP Sensor Circuit DTCs
    • 6.16 DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, P0
      • DTC Descriptors
      • Circuit Description
        • DTC P0324 only
        • Test One
        • Test Two
        • Test Three
      • Conditions for Running the DTC
        • DTC P0324
        • Condition One
        • Condition Two
        • Condition Three
        • DTC P0325
        • DTC P0326
        • DTC P0327
        • DTC P0328
        • DTC P0330
        • DTC P0332
        • DTC P0333
      • Conditions for Setting the DTC
        • DTC P0324
        • DTC P0325
        • DTC P0326
        • DTC P0327
        • DTC P0328
        • DTC P0330
        • DTC P0332
        • DTC P0333
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • Diagnostic Table for the Knock Sensor and Circuit DTCs
    • 6.17 DTC P0340, P0341
      • Circuit Description
      • Conditions for Running the DTCs
      • Conditions for Setting the DTCs
        • DTC P0340
        • DTC P0341
      • Conditions for Clearing the DTCs
      • Additional Information
      • Test Description
      • Diagnostic Table for the CMP Sensor Circuit DTCs
    • 6.18 DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTCs
      • Conditions for Setting the DTCs
      • Conditions for Clearing the DTCs
      • Additional Information
      • Test Descriptions
      • Diagnostic Table for the Ignition Control Circuit DTCs
    • 6.19 DTC P0420 or P0430
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Action Taken When the DTC Sets
      • Conditions for Clearing the DTC
      • P0420 or P0430 Diagnostic Table
    • 6.20 DTC P0443
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Diagnostic Table for the Evaporative Emission Control System
    • 6.21 DTC P0461, P0462 and P0463
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTCs
      • Conditions for Setting the DTCs
        • DTC P0461
        • DTC P0462 and DTC P0463
      • Conditions for Clearing the DTCs
      • Additional Information
      • Diagnostic Table for the Fuel Tank Sensor DTCs
    • 6.22 DTC P0480, P0481
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTCs
      • Condition for Setting the DTCs
      • Conditions for Clearing DTCs
      • Additional Information
      • Diagnostic Table for the Cooling Fan High Speed Relay Circui
    • 6.23 DTC P0502
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0502
      • Conditions for Setting the DTC
        • DTC P0502
      • Conditions for Clearing DTC
      • Additional Information
      • Diagnostic Table for the Vehicle Speed Sensor Circuit DTCs
    • 6.24 DTC P0506, P0507 P2119
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0506 and P0507
        • DTC P2119
      • Conditions for Setting the DTC
        • DTC P0506
        • DTC P0507
        • DTC P2119
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • Diagnostic Table for.P0506, P0507 or P2119
    • 6.25 DTC P0513, P0633, P1629, P1632, P1648, P1677, P1678, P1
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
        • P0513
        • P0633
        • P1629
        • P1632
        • P1677
        • P1678
        • P1679
      • Conditions for Clearing the DTC
      • Additional Information
      • Diagnostic Table for DTCs P0513, P0663, P1629, P1632, P1648,
    • 6.26 DTC P0522, P0523
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTCs
      • Conditions for Setting the DTCs
      • Conditions for Clearing the DTCs
      • Additional Information
      • Test Descriptions
      • Diagnostic Table for the Engine Oil Pressure Sensor Circuit
    • 6.27 DTC P0532, P0533
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
        • DTC P0532
        • DTC P0533
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0532 and P0533 Diagnostic Table
    • 6.28 DTC P0562, P0563
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
        • DTC P0562
        • DTC P0563
      • Conditions for Clearing the DTC
      • Additional Information
      • DTC P0562 or P0563 Diagnostic Table
    • 6.29 DTC P0575
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information.
      • Test Description
      • DTC P0575
    • 6.30 DTC P0601, P0602, P0603, P0604, P0606, P0607, P062F, P1621, P1681, P2610
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0601
        • DTC P0602,P0603 and P0606
        • DTC P0604
        • DTC P0607
        • DTC P062F
      • Conditions for Setting the DTC
        • DTC P0601
        • DTC P0602
        • DTC P0603
        • DTC P0604
        • DTC P0606
        • DTC P0607
        • DTC P062F
      • Conditions for Clearing the DTC
      • Additional Information
      • DTC P0601, P0602, P0603, P0604, P0606, P0607 and P062F Diagn
    • 6.31 DTC P0608
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing DTCs
      • Additional Information
      • Test Descriptions
      • Diagnostic Table for the Vehicle Speed Output Circuit DTC
    • 6.32 DTC P060D, P1680, P2120, P2122, P2123, P2125, P2127, P2128, P2138
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P060D
        • DTC P1680
        • DTC P2120, P2122, P2123, P2125, P2127, P2128 and P2138
      • Conditions for Setting the DTC
        • DTC P060D
        • DTC P1680
        • DTC P2120
        • DTC P2122
        • DTC P2123
        • DTC P2125
        • DTC P2127
        • DTC P2128
        • DTC P2138
      • Conditions for Clearing DTC
      • Additional Information
      • Test Description
      • DTC P060D, P2120, P2122, P2123, P2125, P2127, P2128, P2138 Diagnostic Table
    • 6.33 DTC P0621, P0622
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0621
        • DTC P1622
      • Conditions for Setting the DTC
        • DTC P0621
        • DTC P1622
      • Conditions for Clearing DTC
      • Additional Information
      • DTC P0621 AND P0622 Diagnostic Table
    • 6.34 DTC P0641 P0651
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • DTC P0641 Diagnostic Table
    • 6.35 DTC P0645
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Diagnostic Table for the A/C Clutch Relay Control Circuit DT
    • 6.36 DTC P0685, P0689, P0690
      • DTC Descriptors
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0685, P0686 or P0690 Diagnostic Table
    • 6.37 DTC P0700
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • DTC P0700 Diagnostic Table
    • 6.38 DTC P0719, P0724
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0719
        • DTC P0724
      • Conditions for Setting the DTCs
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0016
    • 6.39 DTC P0801
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing DTCs
      • Additional Information
      • Diagnostic Table for the Reverse Inhibit Solenoid Control Circuit DTC
    • 6.40 DTC P0831 and P0833
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0831, P0833
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0831 and P0833
    • 6.41 DTC P0851, P0852
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
        • DTC P0851, P0852
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0851 and P0852
    • 6.42 DTC P0856
      • DTC Description
      • Circuit Description
      • Diagnostic Table
    • 6.43 DTC P1575
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • DTC P1575 Diagnostic Table
    • 6.44 DTC P1682
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Action Taken When the DTC Sets
      • Additional Information
      • DTC P1682
    • 6.45 DTC P2544
      • DTC Descriptor
      • Circuit Description
      • Conditions for Running the DTC
      • Condition for Setting the DTC
      • Conditions for Clearing the DTC
      • Action Taken When the DTC Sets
      • Additional Information
      • DTC P2544
    • 6.46 DTC U0073
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC U0073
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC U0073 Diagnostic Table
    • 6.47 DTC U0101, U0121
      • DTC Description
      • Circuit Description
      • Conditions for Running the DTC
        • DTC U0101
        • DTC U0121
      • Conditions for Setting the DTC
      • Conditions for Clearing the DTC
      • Additional Information
      • Test Description
      • DTC P0864 and U0101 Diagnostic Table
  • 7 V8 Engine – Tech 2 Functions
    • 7.1 Introduction
    • 7.2 Tech 2 Functions
      • F0: Diagnostic Trouble Codes
      • F1: Data Display
        • Ignition ON:
        • Engine Running
      • F2: OBD Data
      • F3: Snapshot
      • F4: Actuator Test
      • F5: Additional Functions
      • F6: Programming
    • 7.3 GEN IV V8 Engine Data Lists
      • Engine Data
      • EVAP Data
      • Fuel Trim Data
      • O2 Sensor Data
      • TAC Data (Throttle Actuator Control)
      • Cooling/HVAC Data
      • Cruise/Traction Data
      • Electrical/Theft Data
      • Instrument Data
      • ODM Data (Output Driver Module)
      • Misfire Data
    • 7.4 Tech 2 Data Definitions
    • 7.5 OBD Data
    • 7.6 Actuator Test
      • Fan Relays
      • Fuel Pump Relay Test
      • Electronic Throttle Control Test
      • A/C Relay Test
      • Alternator L Terminal
      • EVAP Purge Solenoid
      • Engine Speed Control
      • Starter Motor Relay Test
      • Malfunction Indicator Lamp (MIL) Test
      • Fuel Injector Balance
    • 7.7 Programming