Mercedes-Benz Sprinter 2003 Manual
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Mercedes-Benz Sprinter 2003 Manual

Mercedes-Benz Sprinter 2003 Manual

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1.0
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1
SYSTEM COVERAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2
SIX-STEP TROUBLESHOOTING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . .1
2.0
IDENTIFICATION OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
3.0
SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION . . . . . . . . . . . . . . . . . . . . . .1
3.1
AIRBAG SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.6.1 ACTIVE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.1.6.2 STORED CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.2
COMMUNICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3.2.1
3.2.2
3.3
HEATING & A/C SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.3.1
3.3.1.1 SYSTEM CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.3.1.2 SYSTEM DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.3.2
3.3.2.1 SYSTEM DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.3.2.2 VENTING THE HEATER'S EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.3.2.3 SYSTEM DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.4
INSTRUMENT CLUSTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.5
POWER DOOR LOCKS/RKE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.5.1.
3.5.2
3.5.3
3.5.4
3.6
VEHICLE THEFT SECURITY SYSTEM (VTSS) . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.7
USING THE DRBIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.8
DRBIII ERROR MESSAGES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.9
DRBIII DOES NOT POWER UP (BLANK SCREEN). . . . . . . . . . . . . . . . . . . . . .11
3.10 DISPLAY IS NOT VISIBLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.0
DISCLAIMERS, SAFETY, WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.1
DISCLAIMERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.2
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.2.1
4.2.2
4.2.3
4.2.4
4.3
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.3.1
4.3.2

TABLE OF CONTENTS

DRIVER AIRBAG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
CLOCKSPRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PASSENGER AIRBAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SEAT BELT TENSIONERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SPECIAL TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DIAGNOSTIC TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
COMMUNICATION K-LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
CAN BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
AUTOMATIC TEMPERATURE CONTROL (ATC) . . . . . . . . . . . . . . . . . .5
(HBM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
CENTRAL LOCKING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
REMOTE KEYLESS ENTRY (RKE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
AUTO DOOR LOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
ACCIDENT RESPONSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TECHNICIAN SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . .11
VEHICLE PREPARATION FOR TESTING. . . . . . . . . . . . . . . . . . . . . . .12
SERVICING SUB-ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
DRBIII SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
VEHICLE DAMAGE WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ROAD TESTING A COMPLAINT VEHICLE . . . . . . . . . . . . . . . . . . . . . .12
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  • Page 1: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ............1 SYSTEM COVERAGE .
  • Page 2 TABLE OF CONTENTS - Continued REQUIRED TOOLS AND EQUIPMENT ........13 GLOSSARY OF TERMS.
  • Page 3 TABLE OF CONTENTS - Continued FLAME SENSOR SHORTED ..........91 GLOW PIN OPEN .
  • Page 4 TABLE OF CONTENTS - Continued AIR OUTLET TEMP SENSOR HIGH OR OPEN (ACTIVE) .....132 AIR OUTLET TEMP SENSOR SHORTED LOW (ACTIVE) .....134 ATC FUNCTION TEST COOL FAILURE .
  • Page 5 TABLE OF CONTENTS - Continued VEHICLE THEFT/SECURITY DRIVER CYLINDER LOCK SWITCH CIRCUIT SHORT TO GROUND ... .210 DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND ..212 FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND .
  • Page 6 TABLE OF CONTENTS - Continued CONNECTOR PINOUTS ..........249 AIR OUTLET TEMPERATURE SENSOR .
  • Page 7 TABLE OF CONTENTS - Continued REFRIGERANT PRESSURE SENSOR ........264 A/C AUXILIARY FAN RELAY (IN RELAY BLOCK) .
  • Page 8 NOTES viii...

  • Page 9: Introduction

    GENERAL INFORMATION • 1.0 INTRODUCTION verification of any related symptoms • symptom analysis The procedures contained in this manual include • problem isolation all the specifications, instructions and graphics • repair of isolated problem needed to diagnose Sprinter body system problems. •...

  • Page 10: Driver Airbag

    GENERAL INFORMATION receives power from the Fuse Block No. 1. When- CRITICAL DTCs ever the ignition key is turned to the run or start DTCs that could lead to a condition where the position, the ACM performs a system test. The ACM safety devises may not deploy or incorrectly deploy.

  • Page 11: Clockspring

    GENERAL INFORMATION When supplied with the proper electrical signal, the rectly into the cushion. The airbag module cannot inflator discharged the gas directly into the cush- be repaired, and must be replaced if deployed or in ion. The airbag cannot be repaired, and must be any way damaged.

  • Page 12: Diagnostic Trouble Codes

    GENERAL INFORMATION loads are connected to cables and mounted in a 3.1.6.2 STORED CODES storage case. The cables can be directly connected to Airbag codes are automatically stored in the some airbag system connectors. Jumpers are used ACM’s memory as soon as the malfunction is de- to convert the load tool cable connectors to the other tected.

  • Page 13: Can Bus

    GENERAL INFORMATION 3.2.2 CAN BUS 3.3 HEATING & A/C SYSTEM The CAN bus (controller area network) is a data bus system specifically design for inter module 3.3.1 AUTOMATIC TEMPERATURE communication on this vehicle. The CAN bus con- CONTROL (ATC) sists of a special twisted two-core cable. Control modules are connected to this twisted pair .

  • Page 14: General Information

    GENERAL INFORMATION 1. Connect the DRBIII to the DLC. Evaporator Temperature 2. Place the shift lever in park. The normal range for the Evaporator Temperature 3. Start the engine. Sensor is from 14°F to 104°F. A substitute value of 4. Set the blower to high speed. 14°F with no updates indicates an Evaporator Tem- 5.

  • Page 15: Cabin Heater Module (Chm) & Heater Booster Module

    GENERAL INFORMATION Compres SO Accel (Compressor Shut Off - Due WARNING: ALLOW THE HEATER ASSEMBLY TO To Acceleration) COOL BEFORE PERFORMING A COMPONENT The Engine Control Module transmits this data. A INSPECTION/REPAIR/REPLACEMENT. FAILURE status of YES indicates that the compressor shut FOLLOW THESE INSTRUCTIONS...

  • Page 16: Venting The Heater's Exhaust

    GENERAL INFORMATION reaching operating temperature. The heater’s con- Fault detection is through stored Diagnostic trol unit controls and monitors combustion opera- Trouble Codes (DTCs). DTCs are displayed by the tion through various inputs and outputs that are DRBIII . The heater’s control unit will store up to contained inside the heater assembly.

  • Page 17: Instrument Cluster

    GENERAL INFORMATION Static Heater Signal The instrument cluster includes a warning A status of ON indicates that the heater module buzzer, which sounds (in addition to a warning light sees the Stationary Heating Mode ON signal after in some cases) when: switching on the heater with the heater timer or the •...

  • Page 18: Auto Door Locks

    GENERAL INFORMATION the A-pillar. The SKREEM receives radio messages tional, use the DRBIII and check DTC’s . If the code from the RKE transmitter (fob) and sends com- ACM has unlocked the doors appears, use the mands via the RKE Interface circuit to the CTM. If DRBIII and erase it.

  • Page 19: Using The Drbiii

    GENERAL INFORMATION 3.7 USING THE DRBIII Refer to the DRBIII user guide for instructions and assistance with reading trouble codes, erasing trouble codes, and other DRBIII functions. 3.8 DRBIII ERROR MESSAGES Under normal operation, the DRBIII will dis- play one of only two error messages: user-requested WARM Boot or User-Requested COLD Boot.

  • Page 20: Vehicle Preparation For Testing

    GENERAL INFORMATION General Information Section or in the service man- – Voltage between any terminal and ground must not exceed 500v DC or 500v peak AC. ual procedures. Following these procedures is very important to the safety of the individuals perform- –...

  • Page 21: Required Tools And Equipment

    GENERAL INFORMATION WARNING: REASSEMBLE ALL COMPONENTS 6.0 GLOSSARY OF TERMS BEFORE ROAD TESTING A VEHICLE. DO NOT TRY TO READ THE DRBIII SCREEN OR antilock brake system OTHER TEST EQUIPMENT DURING A TEST airbag control module DRIVE. DO NOT HANG THE DRBIII OR OTHER actuator TEST EQUIPMENT FROM THE REARVIEW AECM...
  • Page 22 NOTES...

  • Page 23: Diagnostic Information And Procedures

    DIAGNOSTIC INFORMATION AND PROCEDURES...

  • Page 24: Airbag

    AIRBAG Symptom: AIRBAG WARNING INDICATOR - DRIVER HIGH When Monitored and Set Condition: AIRBAG WARNING INDICATOR - DRIVER HIGH When Monitored: With ignition on the ACM monitors the Airbag Warning Indicator Driver circuit for a short to battery voltage. Set Condition: This DTC will set if the ACM detects voltage on the Airbag Warning Indicator Driver circuit.
  • Page 25 AIRBAG AIRBAG WARNING INDICATOR - DRIVER HIGH — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module connector. WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
  • Page 26 AIRBAG AIRBAG WARNING INDICATOR - DRIVER HIGH — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.

  • Page 27: Airbag Warning Indicator - Driver Low

    AIRBAG Symptom: AIRBAG WARNING INDICATOR - DRIVER LOW When Monitored and Set Condition: AIRBAG WARNING INDICATOR - DRIVER LOW When Monitored: With ignition on the ACM monitors the Airbag Warning Indicator Driver circuit for an open, high resistance, or short to ground. Set Condition: This DTC will set if the ACM detects a short to ground or open Airbag Warning Indicator Driver circuit.
  • Page 28 AIRBAG AIRBAG WARNING INDICATOR - DRIVER LOW — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module connector. WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
  • Page 29 AIRBAG AIRBAG WARNING INDICATOR - DRIVER LOW — Continued TEST ACTION APPLICABILITY Measure the resistance of the Airbag Warning Lamp Driver circuit between the Airbag Control Module Adaptor and ground. Is the resistance below 5.0 ohms? Yes → Repair the Airbag Warning Indicator Driver circuit shorted to ground.

  • Page 30: Driver Seat Belt Tensioner - Incorrect Feedback

    AIRBAG Symptom List: DRIVER SEAT BELT TENSIONER - INCORRECT FEEDBACK DRIVER SQUIB 1 - INCORRECT FEEDBACK INTERNAL 1 INTERNAL 2 INTERNAL 3 PASSENGER SEAT BELT TENSIONER - INCORRECT FEEDBACK PASSENGER SQUIB 1 - INCORRECT FEEDBACK STORED ENERGY FIRING 1 STORED ENERGY FIRING 2 Test Note: All symptoms listed above are diagnosed using the same tests.
  • Page 31 AIRBAG DRIVER SEAT BELT TENSIONER - INCORRECT FEEDBACK — Continued STORED ENERGY FIRING 2 When Monitored: With the ignition on, the module on board diagnostics continuously performs internal voltage tests. Set Condition: This DTC will set if the ACM identifies an internal low voltages condition. POSSIBLE CAUSES AIRBAG CONTROL MODULE - ACM TEST...

  • Page 32: Driver Seat Belt Tensioner Circuit Open

    AIRBAG Symptom: DRIVER SEAT BELT TENSIONER CIRCUIT OPEN When Monitored and Set Condition: DRIVER SEAT BELT TENSIONER CIRCUIT OPEN When Monitored: With the ignition on the ACM monitors the resistance of the Driver Seat Belt Tensioner circuits. Set Condition: The ACM has detected an open circuit or high resistance on the Driver Seat Belt Tensioner circuits.
  • Page 33 AIRBAG DRIVER SEAT BELT TENSIONER CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Driver Seat Belt Tensioner connector. Disconnect the Airbag Control Module Connector(s).

  • Page 34: Driver Seat Belt Tensioner Circuit Short

    AIRBAG Symptom: DRIVER SEAT BELT TENSIONER CIRCUIT SHORT When Monitored and Set Condition: DRIVER SEAT BELT TENSIONER CIRCUIT SHORT When Monitored: With the ignition on the ACM monitors the resistance of the Driver Seat Belt Tensioner circuits Set Condition: The ACM has detected low resistance in the Driver Seat Belt Tensioner circuits.
  • Page 35 AIRBAG DRIVER SEAT BELT TENSIONER CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Driver Seat Belt Tensioner connector. Disconnect the Airbag Control Module connector(s).

  • Page 36: Driver Seat Belt Tensioner Short To Battery

    AIRBAG Symptom: DRIVER SEAT BELT TENSIONER SHORT TO BATTERY When Monitored and Set Condition: DRIVER SEAT BELT TENSIONER SHORT TO BATTERY When Monitored: With the ignition on the ACM monitors the voltage of the Driver Seat Belt Tensioner circuits. Set Condition: The ACM has detected high voltage on the Driver Seat Belt Tensioner circuits.
  • Page 37 AIRBAG DRIVER SEAT BELT TENSIONER SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Driver Seat Belt Tensioner connector. Disconnect the Airbag Control Module Connector(s).
  • Page 38 AIRBAG DRIVER SEAT BELT TENSIONER SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.

  • Page 39: Driver Seat Belt Tensioner Short To Ground

    AIRBAG Symptom: DRIVER SEAT BELT TENSIONER SHORT TO GROUND When Monitored and Set Condition: DRIVER SEAT BELT TENSIONER SHORT TO GROUND When Monitored: With the ignition on the ACM monitors the voltage of the Driver Seat Belt Tensioner circuits. Set Condition: When the ACM detects a short to ground in either Driver Seat Belt Tensioner circuits.
  • Page 40 AIRBAG DRIVER SEAT BELT TENSIONER SHORT TO GROUND — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Driver Seat Belt Tensioner connector. Disconnect the Airbag Control Module connector(s).

  • Page 41: Driver Squib 1 Circuit Open

    AIRBAG Symptom: DRIVER SQUIB 1 CIRCUIT OPEN When Monitored and Set Condition: DRIVER SQUIB 1 CIRCUIT OPEN When Monitored: With the ignition on, the ACM monitors the resistance of the Driver Squib 1 circuits. Set Condition: The ACM detects an open circuit or high resistance in the Driver Squib 1 circuits.
  • Page 42 AIRBAG DRIVER SQUIB 1 CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Driver Airbag Squib connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
  • Page 43 AIRBAG DRIVER SQUIB 1 CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH. If there are no possible causes remaining, view repair.

  • Page 44: Driver Squib 1 Circuit Short

    AIRBAG Symptom: DRIVER SQUIB 1 CIRCUIT SHORT When Monitored and Set Condition: DRIVER SQUIB 1 CIRCUIT SHORT When Monitored: With the ignition on, the ACM monitors the resistance of the Driver Squib 1 circuits. Set Condition: The ACM has detected low resistance on the Driver Squib 1 circuits. POSSIBLE CAUSES DRIVER AIRBAG SQUIB 1 CIRCUIT SHORT CLOCKSPRING, DRIVER SQUIB 1 CIRCUITS SHORT...
  • Page 45 AIRBAG DRIVER SQUIB 1 CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Driver Airbag connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
  • Page 46 AIRBAG DRIVER SQUIB 1 CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH. If there are no possible causes remaining, view repair.

  • Page 47: Driver Squib 1 Short To Battery

    AIRBAG Symptom: DRIVER SQUIB 1 SHORT TO BATTERY When Monitored and Set Condition: DRIVER SQUIB 1 SHORT TO BATTERY When Monitored: With the ignition on, the ACM monitors the voltage of the Driver Squib 1 circuits. Set Condition: The ACM has detected high voltage on the Driver Squib 1 circuits. POSSIBLE CAUSES DRIVER AIRBAG SQUIB 1 SHORT TO BATTERY CLOCKSPRING, DRIVER SQUIB 1 SHORT TO BATTERY...
  • Page 48 AIRBAG DRIVER SQUIB 1 SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Driver Airbag Squib connector(s). WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
  • Page 49 AIRBAG DRIVER SQUIB 1 SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. WARNING: TO AVOID PERSONAL INJURY OR DEATH, IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.

  • Page 50: Driver Squib 1 Short To Ground

    AIRBAG Symptom: DRIVER SQUIB 1 SHORT TO GROUND When Monitored and Set Condition: DRIVER SQUIB 1 SHORT TO GROUND When Monitored: With the ignition on, the ACM monitors the resistance of the Driver Squib 1 circuits. Set Condition: When the ACM detects a short to ground in either Driver Squib 1 circuits. POSSIBLE CAUSES DRIVER AIRBAG SQUIB 1 SHORT TO GROUND CLOCKSPRING, DRIVER SQUIB 1 SHORT TO GROUND...
  • Page 51 AIRBAG DRIVER SQUIB 1 SHORT TO GROUND — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Driver Airbag Squib connector(s). NOTE: Check connectors - Clean and repair as necessary.
  • Page 52 AIRBAG DRIVER SQUIB 1 SHORT TO GROUND — Continued TEST ACTION APPLICABILITY WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE- CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.

  • Page 53: Loss Of Ignition Run - Start

    AIRBAG Symptom: LOSS OF IGNITION RUN - START When Monitored and Set Condition: LOSS OF IGNITION RUN - START When Monitored: With the ignition in the Run-Start position the ACM monitors the Fused Ignition Switch Output Run-Start circuit for proper system voltage. Set Condition: If the voltage on the Fused Ignition Switch Output Run-Start circuit drops below approximately 6.0 volts, the code will set and all communicate with the DRB will stop.
  • Page 54 AIRBAG LOSS OF IGNITION RUN - START — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes. WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING.

  • Page 55: Passenger Seat Belt Tensioner Circuit Open

    AIRBAG Symptom: PASSENGER SEAT BELT TENSIONER CIRCUIT OPEN When Monitored and Set Condition: PASSENGER SEAT BELT TENSIONER CIRCUIT OPEN When Monitored: With the ignition on, the ACM monitors the resistance of the Passenger Seat Belt Tensioner circuits. Set Condition: When the ACM detects an open circuit or high resistance in the Passenger Seat Belt Tensioner circuits.
  • Page 56 AIRBAG PASSENGER SEAT BELT TENSIONER CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Passenger SBT connector. Disconnect the Airbag control Module connector(s).

  • Page 57: Passenger Seat Belt Tensioner Circuit Short

    AIRBAG Symptom: PASSENGER SEAT BELT TENSIONER CIRCUIT SHORT When Monitored and Set Condition: PASSENGER SEAT BELT TENSIONER CIRCUIT SHORT When Monitored: With the ignition on, the ACM monitors the resistance between the Passenger Seat Belt Tensioner circuits. Set Condition: When the ACM detects low resistance in the Passenger Seat Belt Tensioner circuits.
  • Page 58 AIRBAG PASSENGER SEAT BELT TENSIONER CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Passenger Seat Belt Tensioner connector. Disconnect the Airbag Control Module connector(s).

  • Page 59: Passenger Seat Belt Tensioner Short To Battery

    AIRBAG Symptom: PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY When Monitored and Set Condition: PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY When Monitored: When the ignition is on, the ACM monitors the voltage of the Passenger Seat Belt Tensioner circuits. Set Condition: When the ACM detects voltage on the Passenger Seat Belt Tensioner circuits.
  • Page 60 AIRBAG PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Passenger Seat Belt Tensioner connector. Disconnect the Airbag Control Module Connector(s).
  • Page 61 AIRBAG PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.

  • Page 62: Passenger Seat Belt Tensioner Short To Ground

    AIRBAG Symptom: PASSENGER SEAT BELT TENSIONER SHORT TO GROUND When Monitored and Set Condition: PASSENGER SEAT BELT TENSIONER SHORT TO GROUND When Monitored: With the ignition on, the ACM monitors the resistance of the Passenger Seat Belt Tensioner circuits. Set Condition: When the ACM detects la short to ground in either Passenger Seat Belt Tensioner circuits.
  • Page 63 AIRBAG PASSENGER SEAT BELT TENSIONER SHORT TO GROUND — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Load Tool from the Passenger Seat Belt Tensioner connector. Disconnect the Airbag Control Module Connector(s).

  • Page 64: Passenger Squib 1 Circuit Open

    AIRBAG Symptom: PASSENGER SQUIB 1 CIRCUIT OPEN When Monitored and Set Condition: PASSENGER SQUIB 1 CIRCUIT OPEN When Monitored: With the ignition on, the ACM monitors the resistance of the Passenger Squib 1 circuits. Set Condition: When the ACM detects an open circuit or high resistance on the Passenger Squib 1 circuits.
  • Page 65 AIRBAG PASSENGER SQUIB 1 CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Passenger Airbag connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
  • Page 66 AIRBAG PASSENGER SQUIB 1 CIRCUIT OPEN — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

  • Page 67: Passenger Squib 1 Circuit Short

    AIRBAG Symptom: PASSENGER SQUIB 1 CIRCUIT SHORT When Monitored and Set Condition: PASSENGER SQUIB 1 CIRCUIT SHORT When Monitored: With the ignition on, the ACM monitors the resistance between the Passenger Squib 1 circuits. Set Condition: When the ACM detects low resistance in the Passenger Squib 1 circuits. POSSIBLE CAUSES PAB SQUIB 1 CIRCUIT SHORT PAB SQUIB 1 LINE 1 SHORT TO LINE 2...
  • Page 68 AIRBAG PASSENGER SQUIB 1 CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Passenger Airbag connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED.
  • Page 69 AIRBAG PASSENGER SQUIB 1 CIRCUIT SHORT — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

  • Page 70: Passenger Squib 1 Short To Battery

    AIRBAG Symptom: PASSENGER SQUIB 1 SHORT TO BATTERY When Monitored and Set Condition: PASSENGER SQUIB 1 SHORT TO BATTERY When Monitored: With the ignition on, the ACM monitors the voltage on the Passenger Squib 1 circuits. Set Condition: When the ACM detects voltage on the Passenger Squib 1 circuits. POSSIBLE CAUSES PAB SQUIB 1 CIRCUITS SHORT TO BATTERY PAB SQUIB 1 LINE 1 OR LINE 2 SHORT TO BATTERY...
  • Page 71 AIRBAG PASSENGER SQUIB 1 SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Passenger Airbag connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
  • Page 72 AIRBAG PASSENGER SQUIB 1 SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.

  • Page 73: Passenger Squib 1 Short To Ground

    AIRBAG Symptom: PASSENGER SQUIB 1 SHORT TO GROUND When Monitored and Set Condition: PASSENGER SQUIB 1 SHORT TO GROUND When Monitored: With the ignition on, the ACM monitors the resistance of the Passenger Squib 1 circuits. Set Condition: When the ACM detects a short to ground in either Passenger Squib 1 circuits.
  • Page 74 AIRBAG PASSENGER SQUIB 1 SHORT TO GROUND — Continued TEST ACTION APPLICABILITY WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI- TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE- FORE PROCEEDING. Disconnect the Passenger Airbag connector(s). NOTE: Check connectors - Clean and repair as necessary. WARNING: DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG FACE DOWN ON A HARD SURFACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY DEPLOYED, AND COULD RESULT IN SERIOUS OR...
  • Page 75 AIRBAG PASSENGER SQUIB 1 SHORT TO GROUND — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase all DTC’s from all Airbag modules. If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch positions.

  • Page 76: Airbag Warning Indicator Flashing

    AIRBAG Symptom: *AIRBAG WARNING INDICATOR FLASHING POSSIBLE CAUSES INITIALIZE AIRBAG CONTROL MODULE ACTIVE CODE PRESENT TEST ACTION APPLICABILITY Erase all DTCs. Cycle the ignition switch OFF then to ON. With the DRBIII , read the active and stored DTCs. Are all DTC s erased? Yes →...

  • Page 77: Cabin Heater

    CABIN HEATER Symptom: A. HEATER PRE-TEST POSSIBLE CAUSES NO RESPONSE FROM CABIN HEATER MODULE OR HEATER BOOSTER MODULE CABIN HEATER MODULE OR HEATER BOOSTER MODULE DTC(S) PRESENT AUTOMATIC TEMPERATURE CONTROL DTC(S) PRESENT HEATER SYSTEM COMPONENTS TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES.
  • Page 78 CABIN HEATER A. HEATER PRE-TEST — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 79 CABIN HEATER A. HEATER PRE-TEST — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 80: Circ Pump Control Open

    CABIN HEATER Symptom: CIRC PUMP CONTROL OPEN POSSIBLE CAUSES GROUND CIRCUIT OPEN CIRCULATION PUMP RELAY HIGH SIDE CONTROL CIRCUIT OPEN CIRCULATION PUMP RELAY CABIN HEATER CONTROL UNIT TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER.
  • Page 81 CABIN HEATER CIRC PUMP CONTROL OPEN — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 82: Circ Pump Control Shorted

    CABIN HEATER Symptom: CIRC PUMP CONTROL SHORTED POSSIBLE CAUSES CIRCULATION PUMP RELAY CIRCULATION PUMP RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO GROUND PUMP RELAY HIGH SIDE CONTROL CKT SHORTED TO PUMP RELAY GROUND CKT CABIN HEATER CONTROL UNIT TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES.
  • Page 83 CABIN HEATER CIRC PUMP CONTROL SHORTED — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 84: Combust Fan Shorted

    CABIN HEATER Symptom List: COMBUST FAN SHORTED COMBUST FAN SPEED INCORRECT COMBUSTION FAN OPEN Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be COMBUST FAN SHORTED. POSSIBLE CAUSES COMBUSTION AIR FAN TEST ACTION APPLICABILITY...

  • Page 85: Control Unit Faulty

    CABIN HEATER Symptom: CONTROL UNIT FAULTY When Monitored and Set Condition: CONTROL UNIT FAULTY When Monitored: During heater activation and operation. Set Condition: This DTC will set if the heater’s control unit detects an internal failure in its microprocessor/memory. POSSIBLE CAUSES CABIN HEATER OR HEATER BOOSTER CONTROL UNIT TEST ACTION...

  • Page 86: Dosing Pump Open

    CABIN HEATER Symptom: DOSING PUMP OPEN When Monitored and Set Condition: DOSING PUMP OPEN When Monitored: With the ignition on. Set Condition: This DTC will set if the heater’s control unit detects abnormally high voltage on the Dosing Pump control circuit. POSSIBLE CAUSES DOSING PUMP CONTROL CIRCUIT SHORTED HIGH DOSING PUMP...
  • Page 87 CABIN HEATER DOSING PUMP OPEN — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 88 CABIN HEATER DOSING PUMP OPEN — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 89: Dosing Pump Shorted

    CABIN HEATER Symptom: DOSING PUMP SHORTED POSSIBLE CAUSES DOSING PUMP SHORTED TO GROUND DOSING PUMP CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT DOSING PUMP CONTROL CIRCUIT SHORTED TO GROUND CABIN HEATER OR HEATER BOOSTER CONTROL UNIT TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES.
  • Page 90 CABIN HEATER DOSING PUMP SHORTED — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 91: Fan Stage 1 Relay Control Open

    CABIN HEATER Symptom: FAN STAGE 1 RELAY CONTROL OPEN POSSIBLE CAUSES GROUND CIRCUIT OPEN FAN STAGE 1 RELAY HIGH SIDE CONTROL CIRCUIT OPEN FAN STAGE 1 RELAY CABIN HEATER CONTROL UNIT TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES.
  • Page 92 CABIN HEATER FAN STAGE 1 RELAY CONTROL OPEN — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 93: Fan Stage 1 Relay Control Shorted

    CABIN HEATER Symptom: FAN STAGE 1 RELAY CONTROL SHORTED POSSIBLE CAUSES FAN STAGE 1 RELAY FAN STAGE 1 RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO GROUND FAN STAGE 1 RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT CABIN HEATER CONTROL UNIT TEST ACTION APPLICABILITY...
  • Page 94 CABIN HEATER FAN STAGE 1 RELAY CONTROL SHORTED — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 95: Flame Detect Prior To Combust

    CABIN HEATER Symptom: FLAME DETECT PRIOR TO COMBUST When Monitored and Set Condition: FLAME DETECT PRIOR TO COMBUST When Monitored: During heater start up. Set Condition: This DTC will set if the Flame Sensor’s resistance is not within the expected parameters. POSSIBLE CAUSES HEATER’S AIR INTAKE/EXHAUST RESTRICTED FLAME SENSOR...

  • Page 96: Flame Out

    CABIN HEATER Symptom List: FLAME OUT NO START Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be FLAME OUT. When Monitored and Set Condition: FLAME OUT When Monitored: After heater activation and during subsequent attempts to start the heater.
  • Page 97 CABIN HEATER FLAME OUT — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 98 CABIN HEATER FLAME OUT — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 99: Flame Sensor Open

    CABIN HEATER Symptom List: FLAME SENSOR OPEN FLAME SENSOR SHORTED GLOW PIN OPEN GLOW PIN SHORTED Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be FLAME SENSOR OPEN. When Monitored and Set Condition: FLAME SENSOR OPEN When Monitored: During heater activation and operation.
  • Page 100 CABIN HEATER FLAME SENSOR OPEN — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 101: Heater In Lockout Mode

    CABIN HEATER Symptom List: HEATER IN LOCKOUT MODE HEATER OVERHEATED SUCCESSIVE OVERHEATING Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be HEATER IN LOCKOUT MODE. When Monitored and Set Condition: HEATER IN LOCKOUT MODE When Monitored: During heater activation and operation.
  • Page 102 CABIN HEATER HEATER IN LOCKOUT MODE — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 103 CABIN HEATER HEATER IN LOCKOUT MODE — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 104: Over Voltage

    CABIN HEATER Symptom: OVER VOLTAGE When Monitored and Set Condition: OVER VOLTAGE When Monitored: With the engine running. Set Condition: This DTC will set if the heater’s power supply exceed 15.9 volts for longer than 20 seconds. POSSIBLE CAUSES VEHICLE’S CHARGING SYSTEM OVERCHARGING CABIN HEATER OR HEATER BOOSTER CONTROL UNIT TEST ACTION...

  • Page 105: Overheating Sensor Open

    CABIN HEATER Symptom List: OVERHEATING SENSOR OPEN OVERHEATING SENSOR SHORTED Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be OVERHEATING SENSOR OPEN. When Monitored and Set Condition: OVERHEATING SENSOR OPEN When Monitored: During heater activation and operation.

  • Page 106: Temp Sensor Open

    CABIN HEATER Symptom List: TEMP SENSOR OPEN TEMP SENSOR SHORTED Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be TEMP SENSOR OPEN. When Monitored and Set Condition: TEMP SENSOR OPEN When Monitored: During heater activation and operation.

  • Page 107: Under Voltage

    CABIN HEATER Symptom: UNDER VOLTAGE When Monitored and Set Condition: UNDER VOLTAGE When Monitored: With the engine running. Set Condition: This DTC will set if the heater’s power supply voltage drops below 10.2 volts for longer than 20 seconds. POSSIBLE CAUSES VEHICLE’S BATTERY SYSTEM VEHICLE’S CHARGING SYSTEM NOT OPERATING PROPERLY CABIN HEATER OR HEATER BOOSTER CONTROL UNIT...
  • Page 108 CABIN HEATER UNDER VOLTAGE — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 109 CABIN HEATER UNDER VOLTAGE — Continued TEST ACTION APPLICABILITY WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.

  • Page 110: No Response From Airbag Control Module

    COMMUNICATION Symptom: *NO RESPONSE FROM AIRBAG CONTROL MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE AIRBAG CONTROL MODULE K-ACM CIRCUIT SHORTED TO GROUND K-ACM CIRCUIT SHORTED TO VOLTAGE K-ACM CIRCUIT OPEN AIRBAG CONTROL MODULE TEST ACTION APPLICABILITY WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
  • Page 111 COMMUNICATION *NO RESPONSE FROM AIRBAG CONTROL MODULE — Continued TEST ACTION APPLICABILITY WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. FAILURE TO DO SO MAY RESULT IN PERSONAL INJURY OR DEATH. Disconnect the ACM harness connector. Disconnect the DRBIII from the DLC.

  • Page 112: No Response From Automatic Temperature Control

    COMMUNICATION Symptom: *NO RESPONSE FROM AUTOMATIC TEMPERATURE CONTROL POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE AUTOMATIC TEMPERATURE CONTROL MODULE - INTERNAL SHORT TO GROUND K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO GROUND MODULE - INTERNAL SHORT TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL TEST...
  • Page 113 COMMUNICATION *NO RESPONSE FROM AUTOMATIC TEMPERATURE CONTROL — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the Automatic Temperature Control harness connectors. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-IC, ATC, HBM, CHM circuit.

  • Page 114: No Response From Cabin Heater Module

    COMMUNICATION Symptom: *NO RESPONSE FROM CABIN HEATER MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE CABIN HEATER MODULE MODULE - INTERNAL SHORT TO GROUND K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO GROUND MODULE - INTERNAL SHORT TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT OPEN CABIN HEATER MODULE TEST...
  • Page 115 COMMUNICATION *NO RESPONSE FROM CABIN HEATER MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the Cabin Heater Module harness connectors. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-IC, ATC, HBM, CHM circuit.

  • Page 116: No Response From Central Timer Module

    COMMUNICATION Symptom: *NO RESPONSE FROM CENTRAL TIMER MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE CENTRAL TIMER MODULE SECURITY SYSTEM MODULE K-CTM, SSM CIRCUIT SHORTED TO GROUND SECURITY SYSTEM MODULE K-CTM, SSM CIRCUIT SHORTED TO VOLTAGE K-CTM, SSM CIRCUIT OPEN CENTRAL TIMER MODULE TEST ACTION...
  • Page 117 COMMUNICATION *NO RESPONSE FROM CENTRAL TIMER MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the CTM harness connectors. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-CTM, SSM circuit. NOTE: The test light must illuminate brightly.

  • Page 118: No Response From Controller Antilock Brake

    COMMUNICATION Symptom: *NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE CONTROLLER ANTILOCK BRAKE SHIFTER ASSEMBLY K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO GROUND SHIFTER ASSEMBLY K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO VOLTAGE K-ABS, SHIFTER ASSEMBLY CIRCUIT OPEN CONTROLLER ANTILOCK BRAKE TEST ACTION...
  • Page 119 COMMUNICATION *NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the CAB harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-ABS, Shifter Assembly circuit.

  • Page 120: No Response From Engine Control Module

    COMMUNICATION Symptom: *NO RESPONSE FROM ENGINE CONTROL MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE ENGINE CONTROL MODULE K-ECM CIRCUIT SHORTED TO GROUND K-ECM CIRCUIT SHORTED TO VOLTAGE K-ECM CIRCUIT OPEN ENGINE CONTROL MODULE TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Engine Control Module harness connectors.
  • Page 121 COMMUNICATION *NO RESPONSE FROM ENGINE CONTROL MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the ECM harness connectors. Disconnect the DRBIII from the DLC. Measure the resistance of the K-ECM circuit between the ECM connector and the DLC.

  • Page 122: No Response From Heater Booster Module

    COMMUNICATION Symptom: *NO RESPONSE FROM HEATER BOOSTER MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE HEATER BOOSTER MODULE MODULE - INTERNAL SHORT TO GROUND K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO GROUND MODULE - INTERNAL SHORT TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT OPEN HEATER BOOSTER MODULE TEST...
  • Page 123 COMMUNICATION *NO RESPONSE FROM HEATER BOOSTER MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the Heater Booster Module harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-IC, ATC, HBM, CHM circuit.

  • Page 124: No Response From Instrument Cluster

    COMMUNICATION Symptom: *NO RESPONSE FROM INSTRUMENT CLUSTER POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE INSTRUMENT CLUSTER MODULE - INTERNAL SHORT TO GROUND K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO GROUND MODULE - INTERNAL SHORT TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO VOLTAGE K-IC, ATC, HBM, CHM CIRCUIT OPEN INSTRUMENT CLUSTER TEST...
  • Page 125 COMMUNICATION *NO RESPONSE FROM INSTRUMENT CLUSTER — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the Instrument Cluster harness connectors. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-IC, ATC, HBM, CHM circuit.

  • Page 126: No Response From Security System Module

    COMMUNICATION Symptom: *NO RESPONSE FROM SECURITY SYSTEM MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE SECURITY SYSTEM MODULE CENTRAL TIMER MODULE K-CTM, SSM CIRCUIT SHORTED TO GROUND CENTRAL TIMER MODULE K-CTM, SSM CIRCUIT SHORTED TO VOLTAGE K-CTM, SSM CIRCUIT OPEN SECURITY SYSTEM MODULE TEST ACTION...
  • Page 127 COMMUNICATION *NO RESPONSE FROM SECURITY SYSTEM MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the SSM harness connectors. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-CTM, SSM circuit. NOTE: The test light must illuminate brightly.

  • Page 128: No Response From Sentry Key Remote Entry Module

    COMMUNICATION Symptom: *NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE SENTRY KEY REMOTE ENTRY MODULE K-SKREEM CIRCUIT SHORTED TO GROUND K-SKREEM CIRCUIT SHORTED TO VOLTAGE K-SKREEM CIRCUIT OPEN SENTRY KEY REMOTE ENTRY MODULE TEST ACTION APPLICABILITY...
  • Page 129 COMMUNICATION *NO RESPONSE FROM SENTRY KEY REMOTE ENTRY MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the SKREEM harness connector. Disconnect the DRBIII from the DLC. Measure the resistance of the K-SKREEM circuit between the SKREEM connector and the DLC.

  • Page 130: No Response From Shifter Assembly

    COMMUNICATION Symptom: *NO RESPONSE FROM SHIFTER ASSEMBLY POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE SHIFTER ASSEMBLY CONTROLLER ANTILOCK BRAKE K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO GROUND CONTROLLER ANTILOCK BRAKE K-ABS, SHIFTER ASSEMBLY CIRCUIT SHORTED TO VOLTAGE K-ABS, SHIFTER ASSEMBLY CIRCUIT OPEN SHIFTER ASSEMBLY TEST ACTION...
  • Page 131 COMMUNICATION *NO RESPONSE FROM SHIFTER ASSEMBLY — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the DRBIII from the DLC. Disconnect the Shifter Assembly harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, probe the K-ABS, Shifter Assembly circuit.

  • Page 132: No Response From Transmission Control Module

    COMMUNICATION Symptom: *NO RESPONSE FROM TRANSMISSION CONTROL MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE TRANSMISSION CONTROL MODULE K-TCM CIRCUIT SHORTED TO GROUND K-TCM CIRCUIT SHORTED TO VOLTAGE K-TCM CIRCUIT OPEN TRANSMISSION CONTROL MODULE TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Transmission Control Module harness connectors.
  • Page 133 COMMUNICATION *NO RESPONSE FROM TRANSMISSION CONTROL MODULE — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the TCM harness connectors. Disconnect the DRBIII from the DLC. Measure the resistance of the K-TCM circuit between the TCM connector and the DLC.

  • Page 134: C Compressor Control High Or Open (Active)

    HEATING & A/C Symptom: A/C COMPRESSOR CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES A/C COMPRESSOR CLUTCH CONTROL CIRCUIT SHORTED TO VOLTAGE A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH CONTROL CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary.
  • Page 135 HEATING & A/C A/C COMPRESSOR CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the A/C Compressor Clutch harness connector. Measure the resistance of the A/C Compressor Clutch Control circuit between the Automatic Temperature Control (ATC) C1 harness connector and the A/C Compres- sor Clutch harness connector.
  • Page 136 HEATING & A/C Symptom List: A/C COMPRESSOR CONTROL HIGH OR OPEN (STORED) A/C COMPRESSOR CONTROL SHORTED LOW (STORED) AIR OUTLET TEMP SENSOR HIGH OR OPEN (STORED) AIR OUTLET TEMP SENSOR SHORTED LOW (STORED) AUX FAN RELAY CONTROL HIGH OR OPEN (STORED) AUX FAN RELAY CONTROL SHORTED LOW (STORED) BLOWER STAGE 1 HIGH OR OPEN (STORED) BLOWER STAGE 1 SHORTED LOW (STORED)
  • Page 137 HEATING & A/C A/C COMPRESSOR CONTROL HIGH OR OPEN (STORED) — Continued NO COMMUNICATION WITH IC (STORED) When Monitored: With the ignition on. Set Condition: This DTC will set if the Automatic Temperature Control (ATC) fails to receive all messages from the Instrument Cluster. POSSIBLE CAUSES CHECK FOR ACTIVE AUTOMATIC TEMPERATURE CONTROL (ATC) DTCS INTERMITTENT CONDITION...

  • Page 138: C Compressor Control Shorted Low (Active)

    HEATING & A/C Symptom: A/C COMPRESSOR CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH CONTROL CIRCUIT SHORTED TO GROUND A/C COMPRESSOR CLUTCH CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT A/C COMPRESSOR CLUTCH CONTROL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION...
  • Page 139 HEATING & A/C A/C COMPRESSOR CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the A/C Compressor Clutch harness connector. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Measure the resistance between the A/C Compressor Clutch Control circuit and the Sensor Ground circuit in the Automatic Temperature Control C1 harness connector.

  • Page 140: Air Outlet Temp Sensor High Or Open (Active)

    HEATING & A/C Symptom: AIR OUTLET TEMP SENSOR HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES AIR OUTLET TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) AUTOMATIC TEMPERATURE CONTROL (ATC) AIR OUTLET TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN SENSOR GROUND CIRCUIT OPEN AIR OUTLET TEMPERATURE SENSOR TEST ACTION...
  • Page 141 HEATING & A/C AIR OUTLET TEMP SENSOR HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Air Outlet Temperature Sensor harness connector. Measure the resistance of the Air Outlet Temperature Sensor Signal circuit between the Automatic Temperature Control (ATC) C1 harness connector and the Air Outlet Temperature Sensor harness connector.

  • Page 142: Air Outlet Temp Sensor Shorted Low (Active)

    HEATING & A/C Symptom: AIR OUTLET TEMP SENSOR SHORTED LOW (ACTIVE) POSSIBLE CAUSES AIR OUTLET TEMPERATURE SENSOR AIR OUTLET TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND AIR OUTLET TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) AIR OUTLET TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIR- CUIT TEST...
  • Page 143 HEATING & A/C AIR OUTLET TEMP SENSOR SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Air Outlet Temperature Sensor harness connector. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Measure the resistance between the Air Outlet Temperature Sensor Signal circuit and the Sensor Ground circuit.

  • Page 144: Atc Function Test Cool Failure

    HEATING & A/C Symptom List: ATC FUNCTION TEST COOL FAILURE ATC FUNCTION TEST FAILURE ATC FUNCTION TEST HEAT FAILURE Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be ATC FUNCTION TEST COOL FAILURE.
  • Page 145 HEATING & A/C ATC FUNCTION TEST COOL FAILURE — Continued TEST ACTION APPLICABILITY Verify that all of the following criteria was met when attempting to run the ATC Function Test. The vehicle was stationary. The engine was running. The air conditioning switch was On. The ambient temperature was above 59°F (15°C).

  • Page 146: Aux Fan Relay Control High Or Open (Active)

    HEATING & A/C Symptom: AUX FAN RELAY CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO VOLTAGE GROUND CIRCUIT OPEN A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL CIRCUIT OPEN A/C AUXILIARY FAN RELAY AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION...
  • Page 147 HEATING & A/C AUX FAN RELAY CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Reconnect the Automatic Temperature Control (ATC) C1 harness connector. Install a substitute relay in place of the A/C Auxiliary Fan Relay. Turn the ignition on.

  • Page 148: Aux Fan Relay Control Shorted Low (Active)

    HEATING & A/C Symptom: AUX FAN RELAY CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES A/C AUXILIARY FAN RELAY A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO GROUND A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL CKT SHORTED TO SENSOR GROUND CKT TEST...
  • Page 149 HEATING & A/C AUX FAN RELAY CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Remove the A/C Auxiliary Fan Relay from the relay center. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Measure the resistance between the A/C Auxiliary Fan Relay High Side Control circuit and the Ground circuit in the Automatic Temperature Control (ATC) C1 harness connector.

  • Page 150: Blower Stage 1 High Or Open (Active)

    HEATING & A/C Symptom: BLOWER STAGE 1 HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES BLOWER MOTOR BLOWER MOTOR DRIVER CIRCUIT(S) SHORTED TO VOLTAGE BLOWER MOTOR DRIVER CIRCUIT(S) OPEN BLOWER MOTOR RESISTOR BLOCK AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary.
  • Page 151 HEATING & A/C BLOWER STAGE 1 HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Blower Motor Resistor Block harness connector. Measure the resistance between Blower Motor Resistor Block cavity 2 and cavity 1. The approximate resistance should be 1.4 ohms.

  • Page 152: Blower Stage 1 Shorted Low (Active)

    HEATING & A/C Symptom: BLOWER STAGE 1 SHORTED LOW (ACTIVE) POSSIBLE CAUSES BLOWER MOTOR FUSE BLOWER MOTOR BLOWER MOTOR DRIVER CIRCUIT(S) SHORTED TO GROUND FUSED B+ CIRCUIT SHORTED TO GROUND BLOWER MOTOR RESISTOR BLOCK AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY Turn the ignition off.
  • Page 153 HEATING & A/C BLOWER STAGE 1 SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Blower Motor Resistor harness connector. Disconnect the Blower Motor harness connector. Disconnect the Automatic Temperature Control (ATC) C2 harness connector. Measure the resistance between ground and each of the Blower Motor Driver circuits (Low, M1, M2, High).

  • Page 154: Cabin Heater Control High Or Open (Active)

    HEATING & A/C Symptom: CABIN HEATER CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES CABIN HEATER OR HEATER BOOSTER CONTROL UNIT CABIN HEATER CONTROL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) CABIN HEATER CONTROL CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY...
  • Page 155 HEATING & A/C CABIN HEATER CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Cabin Heater or Heater Booster harness connector. Measure the resistance of the Cabin Heater Control circuit between the Automatic Temperature Control (ATC) C1 harness connector and the Cabin Heater or Heater Booster harness connector (as applicable).

  • Page 156: Cabin Heater Control Shorted Low (Active)

    HEATING & A/C Symptom: CABIN HEATER CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES CABIN HEATER OR HEATER BOOSTER CONTROL UNIT CABIN HEATER CONTROL CIRCUIT SHORTED TO GROUND CABIN HEATER CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT CABIN HEATER CONTROL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION...
  • Page 157 HEATING & A/C CABIN HEATER CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Cabin Heater or Heater Booster harness connector. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Measure the resistance between the Cabin Heater Control circuit and the Ground circuit in the Automatic Temperature Control (ATC) C1 harness connector.

  • Page 158: Circ Pump Control High Or Open (Active)

    HEATING & A/C Symptom: CIRC PUMP CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES CIRCULATION PUMP CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) CIRCULATION PUMP CONTROL CIRCUIT OPEN GROUND CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY Turn the ignition off.
  • Page 159 HEATING & A/C CIRC PUMP CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Circulation Pump harness connector. Measure the resistance of the Circulation Pump Control circuit between the Automatic Temperature Control (ATC) C1 harness connector and the Circulation Pump harness connector.

  • Page 160: Circ Pump Control Shorted Low (Active)

    HEATING & A/C Symptom: CIRC PUMP CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO GROUND CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT CIRCULATION PUMP CONTROL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT CIRCULATION PUMP AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY...
  • Page 161 HEATING & A/C CIRC PUMP CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Circulation Pump harness connector. Connect a fused jumper wire between the Battery (+) and Circulation Pump cavity 2. Connect a jumper wire between ground and Circulation Pump cavity 1. Does the Circulation Pump run? Yes →...

  • Page 162: Evap Temp Sensor High Or Open (Active)

    HEATING & A/C Symptom: EVAP TEMP SENSOR HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) AUTOMATIC TEMPERATURE CONTROL (ATC) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN SENSOR GROUND CIRCUIT OPEN EVAPORATOR TEMPERATURE SENSOR TEST ACTION APPLICABILITY...
  • Page 163 HEATING & A/C EVAP TEMP SENSOR HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance of the Evaporator Temperature Sensor Signal circuit between the Automatic Temperature Control (ATC) C1 harness connector and the Evaporator Temperature Sensor harness connector.

  • Page 164: Evap Temp Sensor Shorted Low (Active)

    HEATING & A/C Symptom: EVAP TEMP SENSOR SHORTED LOW (ACTIVE) POSSIBLE CAUSES EVAPORATOR TEMPERATURE SENSOR EVAP TEMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND EVAP TEMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND CIRCUIT EVAP TEMP SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION...
  • Page 165 HEATING & A/C EVAP TEMP SENSOR SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance between the Evaporator Temperature Sensor Signal circuit and the Sensor Ground circuit.

  • Page 166: Communication Bus (Active)

    HEATING & A/C Symptom: NO COMMUNICATION BUS (ACTIVE) When Monitored and Set Condition: NO COMMUNICATION BUS (ACTIVE) When Monitored: With the ignition on. Set Condition: This DTC will set if the Automatic Temperature Control (ATC) fails to receive all module messages. POSSIBLE CAUSES CAN CIRCUITS SHORTED TO VOLTAGE MODULE SHORT TO VOLTAGE...
  • Page 167 HEATING & A/C NO COMMUNICATION BUS (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Using a voltmeter, connect one end to the CAN circuit that previously measured above 3.0 volts, and the other end to ground. NOTE: Refer to the wiring diagrams in the service information to help determine which modules are connected to the CAN Bus.
  • Page 168 HEATING & A/C NO COMMUNICATION BUS (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the negative battery cable. NOTE: Refer to the wiring diagrams in the service information to help determine which modules are connected to the CAN Bus. Disconnect all of the modules that are connected to the CAN Bus.

  • Page 169: Communication With Ecm (Active)

    HEATING & A/C Symptom: NO COMMUNICATION WITH ECM (ACTIVE) When Monitored and Set Condition: NO COMMUNICATION WITH ECM (ACTIVE) When Monitored: With the ignition on. Set Condition: This DTC will set if the Automatic Temperature Control (ATC) fails to receive all messages from the ECM. POSSIBLE CAUSES CAN C BUS CIRCUIT(S) SHORTED OR OPEN ENGINE CONTROL MODULE DTC(S) PRESENT...
  • Page 170 HEATING & A/C NO COMMUNICATION WITH ECM (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Engine Control Module harness connectors. Check all of the engine control module’s power circuits for a short or open condition. Check all of the engine control module’s ground circuits for an open condition. Were any problems found? Yes →...

  • Page 171: Communication With Ic (Active)

    HEATING & A/C Symptom: NO COMMUNICATION WITH IC (ACTIVE) When Monitored and Set Condition: NO COMMUNICATION WITH IC (ACTIVE) When Monitored: With the ignition on. Set Condition: This DTC will set if the Automatic Temperature Control (ATC) fails to receive all messages from the Instrument Cluster. POSSIBLE CAUSES CAN C BUS CIRCUIT(S) SHORTED OR OPEN INSTRUMENT CLUSTER DTC(S) PRESENT...
  • Page 172 HEATING & A/C NO COMMUNICATION WITH IC (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Instrument Cluster harness connectors. Check all of the instrument cluster’s power circuits for a short or open condition. Check all of the instrument cluster’s ground circuits for an open condition. Were any problems found? Yes →...

  • Page 173: Recirc Air Solenoid Control High Or Open (Active)

    HEATING & A/C Symptom: RECIRC AIR SOLENOID CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES RECIRCULATED AIR SOLENOID VALVE RECIRCULATED AIR SOLENOID VALVE CONTROL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) RECIRCULATED AIR SOLENOID VALVE CONTROL CIRCUIT OPEN GROUND CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION...
  • Page 174 HEATING & A/C RECIRC AIR SOLENOID CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Recirculated Air Solenoid Valve harness connector. Measure the resistance of the Recirculated Air Solenoid Valve Control circuit between the Automatic Temperature Control (ATC) C1 harness connector and the Recirculated Air Solenoid Valve harness connector.

  • Page 175: Recirc Air Solenoid Control Shorted Low (Active)

    HEATING & A/C Symptom: RECIRC AIR SOLENOID CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES RECIRCULATED AIR SOLENOID VALVE CONTROL CIRCUIT SHORTED TO GROUND RECIRCULATED AIR SOLENOID VALVE CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT RECIRCULATED AIR SOLENOID VALVE CONTROL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) RECIRCULATED AIR SOLENOID VALVE...
  • Page 176 HEATING & A/C RECIRC AIR SOLENOID CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Reconnect the Automatic Temperature Control (ATC) C1 harness connector. Disconnect the Recirculated Air Solenoid Valve harness connector. Turn the ignition on.

  • Page 177: Refrig Press Sensor High Or Open (Active)

    HEATING & A/C Symptom: REFRIG PRESS SENSOR HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE REFRIGERANT PRESSURE SENSOR FEEDBACK CIRCUIT SHORTED TO VOLTAGE 5 VOLT SUPPLY CKT SHORTED TO REFRIGERANT PRESSURE SENSOR FEEDBACK CKT AUTOMATIC TEMPERATURE CONTROL (ATC) 5 VOLT SUPPLY CIRCUIT OPEN REFRIGERANT PRESSURE SENSOR FEEDBACK CIRCUIT OPEN SENSOR GROUND CIRCUIT OPEN...
  • Page 178 HEATING & A/C REFRIG PRESS SENSOR HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Reconnect the Automatic Temperature Control (ATC) C1 harness connector. Turn the ignition on. While back probing, measure the voltage between the 5 Volt Supply circuit and ground.

  • Page 179: Refrig Press Sensor Shorted Low (Active)

    HEATING & A/C Symptom: REFRIG PRESS SENSOR SHORTED LOW (ACTIVE) POSSIBLE CAUSES REFRIGERANT PRESSURE SENSOR 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND CIRCUIT 5 VOLT SUPPLY CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT REFRIGERANT PRESSURE SENSOR FEEDBACK CIRCUIT SHORTED TO GROUND REFRIGERANT PRESSURE SENSOR FEEDBACK CIRCUIT SHORTED TO GROUND CIRCUIT REFRIGERANT PRESSURE SENSOR FEEDBACK CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT...
  • Page 180 HEATING & A/C REFRIG PRESS SENSOR SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Measure the resistance between the 5 Volt Supply circuit and the Ground circuit. Is the resistance below 10k ohms? Yes →...

  • Page 181: Water Cycle Valve Control High Or Open (Active)

    HEATING & A/C Symptom: WATER CYCLE VALVE CONTROL HIGH OR OPEN (ACTIVE) POSSIBLE CAUSES WATER CYCLE VALVE WATER CYCLE VALVE CONTROL CIRCUIT SHORTED TO VOLTAGE AUTOMATIC TEMPERATURE CONTROL (ATC) WATER CYCLE VALVE CONTROL CIRCUIT OPEN GROUND CIRCUIT OPEN AUTOMATIC TEMPERATURE CONTROL (ATC) TEST ACTION APPLICABILITY...
  • Page 182 HEATING & A/C WATER CYCLE VALVE CONTROL HIGH OR OPEN (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Disconnect the Automatic Temperature Control (ATC) C1 harness connector. Turn the ignition on. Measure the voltage of the Water Cycle Valve Control circuit.

  • Page 183: Water Cycle Valve Control Shorted Low (Active)

    HEATING & A/C Symptom: WATER CYCLE VALVE CONTROL SHORTED LOW (ACTIVE) POSSIBLE CAUSES WATER CYCLE VALVE CONTROL CIRCUIT SHORTED TO GROUND WATER CYCLE VALVE CONTROL CIRCUIT SHORTED TO GROUND CIRCUIT WATER CYCLE VALVE CONTROL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT AUTOMATIC TEMPERATURE CONTROL (ATC) WATER CYCLE VALVE TEST...
  • Page 184 HEATING & A/C WATER CYCLE VALVE CONTROL SHORTED LOW (ACTIVE) — Continued TEST ACTION APPLICABILITY Turn the ignition off. NOTE: Check connectors - Clean/repair as necessary. Reconnect the Automatic Temperature Control (ATC) C1 harness connector. Press the Residual Engine Heat Utilization (REST) switch off. Disconnect the Water Cycle Valve harness connector.

  • Page 185: Instrument Cluster

    INSTRUMENT CLUSTER Symptom: AMBIENT TEMP SENSOR OPEN/SHORT TO BATTERY POSSIBLE CAUSES AMBIENT TEMPERATURE SENSOR SIGNAL (+) CIRCUIT SHORT TO VOLTAGE AMBIENT TEMPERATURE SENSOR AMBIENT TEMPERATURE SENSOR SIGNAL RETURN CIRCUIT OPEN AMBIENT TEMPERATURE SENSOR SIGNAL (+) CIRCUIT OPEN INSTRUMENT CLUSTER TEST ACTION APPLICABILITY Turn the ignition off.
  • Page 186 INSTRUMENT CLUSTER AMBIENT TEMP SENSOR OPEN/SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Instrument Cluster C1 harness connector. Disconnect the Ambient Temperature Sensor harness connector. Measure the resistance of the Ambient Temperature Sensor Signal (+) circuit between the Instrument Cluster C1 harness connector and the Ambient Temperature Sensor harness connector.

  • Page 187: Ambient Temp Sensor Short To Ground

    INSTRUMENT CLUSTER Symptom: AMBIENT TEMP SENSOR SHORT TO GROUND POSSIBLE CAUSES AMBIENT TEMPERATURE SENSOR AMBIENT TEMPERATURE SENSOR SIGNAL (+) CIRCUIT SHORT TO GROUND AMBIENT TEMPERATURE SENSOR SIGNAL (+) CIRCUIT SHORT TO SENSOR RETURN CIR- CUIT INSTRUMENT CLUSTER TEST ACTION APPLICABILITY Turn the ignition off.

  • Page 188: Fuel Level Sensor Open/Short To Battery

    INSTRUMENT CLUSTER Symptom: FUEL LEVEL SENSOR OPEN/SHORT TO BATTERY POSSIBLE CAUSES FUEL LEVEL SENSOR FUEL LEVEL SENSOR SIGNAL (+) CIRCUIT SHORT TO VOLTAGE FUEL LEVEL SENSOR SIGNAL RETURN CIRCUIT OPEN FUEL LEVEL SENSOR SIGNAL (+) CIRCUIT OPEN INSTRUMENT CLUSTER TEST ACTION APPLICABILITY Turn the ignition off.
  • Page 189 INSTRUMENT CLUSTER FUEL LEVEL SENSOR OPEN/SHORT TO BATTERY — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance of the Fuel Level Sensor Signal (+) circuit between the Fuel Pump Module harness connector and the Instrument Cluster harness connector.

  • Page 190: Fuel Level Sensor Short To Ground

    INSTRUMENT CLUSTER Symptom: FUEL LEVEL SENSOR SHORT TO GROUND POSSIBLE CAUSES FUEL LEVEL SENSOR FUEL LEVEL SENSOR CIRCUITS SHORTED TOGETHER INSTRUMENT CLUSTER FUEL LEVEL SENSOR SIGNAL (+) SHORT TO GROUND TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Turn the ignition on, with the DRBIII , read DTCs.

  • Page 191: Instrument Cluster Internal Failure B1043

    INSTRUMENT CLUSTER Symptom: INSTRUMENT CLUSTER INTERNAL FAILURE B1043 POSSIBLE CAUSES CAN BUS FAILURE INSTRUMENT CLUSTER TEST ACTION APPLICABILITY If this fault is present, scan the Engine Control Module and/or Transmission Control Module for any CAN Bus related faults. Are any CAN Bus Related faults present? Yes →...

  • Page 192: Instrument Cluster Internal Failure B1053

    INSTRUMENT CLUSTER Symptom: INSTRUMENT CLUSTER INTERNAL FAILURE B1053 POSSIBLE CAUSES CAN BUS FAILURE INSTRUMENT CLUSTER TEST ACTION APPLICABILITY If this fault is present, scan the Engine Control Module and/or Transmission Control Module for any CAN Bus related faults. Are any CAN Bus Related faults present? Yes →...

  • Page 193: Instrument Cluster Overvoltage

    INSTRUMENT CLUSTER Symptom: INSTRUMENT CLUSTER OVERVOLTAGE POSSIBLE CAUSES CHARGING SYSTEM OVERCHARGE INSTRUMENT CLUSTER TEST ACTION APPLICABILITY Check the Charging System for proper operation in accordance with the Service Information. Is the Charging system operating properly? Yes → Replace the Instrument Cluster in accordance with the service information.

  • Page 194: Can Communication With Abs

    INSTRUMENT CLUSTER Symptom: NO CAN COMMUNICATION WITH ABS POSSIBLE CAUSES DTC PRESENT OPEN CAN CIRCUITS AT INSTRUMENT CLUSTER INSTRUMENT CLUSTER CHECK POWERS AND GROUNDS TO THE AFFECTED MODULE OPEN CAN CIRCUITS AT CAB CONTROLLER ANTILOCK BRAKE TEST ACTION APPLICABILITY With the DRBIII , record and erase DTC’s. Cycle the ignition switch from ON to OFF to ON.
  • Page 195 INSTRUMENT CLUSTER NO CAN COMMUNICATION WITH ABS — Continued TEST ACTION APPLICABILITY Turn the ignition off to the lock position. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-) circuit in the Instrument Cluster harness connector.

  • Page 196: Can Communication With Ecm

    INSTRUMENT CLUSTER Symptom: NO CAN COMMUNICATION WITH ECM POSSIBLE CAUSES DTC PRESENT OPEN CAN CIRCUITS AT INSTRUMENT CLUSTER INSTRUMENT CLUSTER CHECK POWERS AND GROUNDS TO THE AFFECTED MODULE OPEN CAN CIRCUITS AT ECM TEST ACTION APPLICABILITY With the DRBIII , record and erase DTC’s. Cycle the ignition switch from ON to OFF to ON.
  • Page 197 INSTRUMENT CLUSTER NO CAN COMMUNICATION WITH ECM — Continued TEST ACTION APPLICABILITY Turn the ignition off to the lock position. Disconnect the Instrument Cluster C1 harness connector. Reconnect the ECM harness connector. Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-) circuit in the Instrument Cluster harness connector.

  • Page 198: Can Communication With Tcm

    INSTRUMENT CLUSTER Symptom: NO CAN COMMUNICATION WITH TCM POSSIBLE CAUSES DTC PRESENT OPEN CAN CIRCUITS AT INSTRUMENT CLUSTER INSTRUMENT CLUSTER CHECK POWERS AND GROUNDS TO THE AFFECTED MODULE OPEN CAN CIRCUITS AT TCM TEST ACTION APPLICABILITY With the DRBIII , record and erase DTC’s. Cycle the ignition switch from ON to OFF to ON.
  • Page 199 INSTRUMENT CLUSTER NO CAN COMMUNICATION WITH TCM — Continued TEST ACTION APPLICABILITY Turn the ignition off to the lock position. Disconnect the Instrument Cluster C1 harness connector. Measure the resistance between the CAN C Bus (+) circuit and the CAN C Bus (-) circuit in the Instrument Cluster harness connector.

  • Page 200: Preglow Indicator Lamp Failure

    INSTRUMENT CLUSTER Symptom: PREGLOW INDICATOR LAMP FAILURE POSSIBLE CAUSES INSTRUMENT CLUSTER TEST ACTION APPLICABILITY NOTE: The Instrument Cluster performs internal tests on the indicators during each ignition cycle. With the DRBIII , erase DTCs. Turn the ignition off, wait 10 seconds, then turn the ignition on. With the DRBIII , read DTCs.

  • Page 201: Srs Indicator Lamp Failure

    INSTRUMENT CLUSTER Symptom: SRS INDICATOR LAMP FAILURE POSSIBLE CAUSES INSTRUMENT CLUSTER TEST ACTION APPLICABILITY If this fault is present, interrogate the Airbag Control Module for any SRS Indicator faults. NOTE: The Instrument Cluster performs internal tests on the indicators during each ignition cycle. With the DRBIII , erase DTCs.

  • Page 202: Power Door Locks/Rke

    POWER DOOR LOCKS/RKE Symptom: DRIVER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND When Monitored and Set Condition: DRIVER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery is above 10.0 volts and the module is connected. Set Condition: Whenever the CTM senses resistance on the Driver Door Ajar Indicator Driver circuit for over 30 seconds, this code will set.
  • Page 203 POWER DOOR LOCKS/RKE DRIVER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the Master Door Lock Switch connector. Measure the resistance between ground and the Driver Door Ajar Indicator Driver circuit.
  • Page 204 POWER DOOR LOCKS/RKE Symptom: PASSENGER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND When Monitored and Set Condition: PASSENGER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery is above 10.0 volts and the module is connected. Set Condition: Whenever the CTM senses resistance on the Passenger Door Ajar Indicator Driver circuit for over 30 seconds, this code will set.
  • Page 205 POWER DOOR LOCKS/RKE PASSENGER DOOR AJAR INDICATOR DRIVER CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the Master Door Lock Switch connector. Measure the resistance between ground and the Passenger Door Ajar Indicator Driver circuit.

  • Page 206: Replace Control Module

    POWER DOOR LOCKS/RKE Symptom: REPLACE CONTROL MODULE When Monitored and Set Condition: REPLACE CONTROL MODULE When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: The SKREEM has detected an internal failure and must be replaced. POSSIBLE CAUSES CTM INTERNAL FAILURE TEST...

  • Page 207: Rke Interface Circuit Short To Ground - Ctm

    POWER DOOR LOCKS/RKE Symptom: RKE INTERFACE CIRCUIT SHORT TO GROUND - CTM When Monitored and Set Condition: RKE INTERFACE CIRCUIT SHORT TO GROUND - CTM When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: If the CTM monitors a resistance below 7500.0 ohms for over 1 minute, this code will set.
  • Page 208 POWER DOOR LOCKS/RKE RKE INTERFACE CIRCUIT SHORT TO GROUND - CTM — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the SKREEM connector. Measure the resistance between ground and the RKE Interface circuit. Is the resistance below 20000.0 ohms? Yes →...

  • Page 209: Rke Interface Circuit Short To Ground - Skreem

    POWER DOOR LOCKS/RKE Symptom: RKE INTERFACE CIRCUIT SHORT TO GROUND - SKREEM When Monitored and Set Condition: RKE INTERFACE CIRCUIT SHORT TO GROUND - SKREEM When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: If the SKREEM monitors a resistance below 4000.0 ohms or over 9000.0 ohms for over 30 seconds, this code will set.
  • Page 210 POWER DOOR LOCKS/RKE RKE INTERFACE CIRCUIT SHORT TO GROUND - SKREEM — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the SKREEM connector. Measure the resistance between ground and the RKE Interface circuit. Is the resistance below 20000.0 ohms? Yes →...

  • Page 211: Rke Interface Circuit Short To Voltage - Ctm

    POWER DOOR LOCKS/RKE Symptom: RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - CTM When Monitored and Set Condition: RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - CTM When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: If the CTM monitors a voltage on the RKE Interface circuit for over 30 seconds, this code will set.

  • Page 212: Rke Interface Circuit Short To Voltage - Skreem

    POWER DOOR LOCKS/RKE Symptom: RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM When Monitored and Set Condition: RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: If the SKREEM monitors a voltage on the RKE Interface circuit for over 30 seconds, this code will set.
  • Page 213 POWER DOOR LOCKS/RKE RKE INTERFACE CIRCUIT SHORT TO VOLTAGE - SKREEM — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the SKREEM connector. Turn the ignition on. Measure the voltage between ground and the RKE Interface circuit. Is there any voltage present? Yes →...

  • Page 214: The Acm Has Unlocked The Doors

    POWER DOOR LOCKS/RKE Symptom: THE ACM HAS UNLOCKED THE DOORS When Monitored and Set Condition: THE ACM HAS UNLOCKED THE DOORS When Monitored: Whenever the battery is above 10.0 volts and the module is connected. Set Condition: Whenever the CTM senses battery voltage for over 50ms on the Enhanced Accident Report Driver circuit, this code will set.

  • Page 215: Unknown Trouble Code Unknown Dtc Type 2

    POWER DOOR LOCKS/RKE Symptom: UNKNOWN TROUBLE CODE UNKNOWN DTC TYPE 2 When Monitored and Set Condition: UNKNOWN TROUBLE CODE UNKNOWN DTC TYPE 2 When Monitored: Whenever the battery voltage is above 10.0 volts and the module is connected. Set Condition: The SKREEM has detected a code but is confused as to which one it is. POSSIBLE CAUSES DTC PRESENT SKREEM SHORTED...

  • Page 216: Rke Inoperative

    POWER DOOR LOCKS/RKE Symptom: *RKE INOPERATIVE POSSIBLE CAUSES DTC PRESENT TRANSMITTER INOPERATIVE CENTRAL TIMER MODULE SKREEM OPEN TEST ACTION APPLICABILITY With the DRBIII , read DTC’s. Turn the ignition off and remove the key. Using the RKE transmitter, operate the Door Locks several times while observing the DRBIII .

  • Page 217: Rke Poor Range

    POWER DOOR LOCKS/RKE Symptom: *RKE POOR RANGE POSSIBLE CAUSES DTC PRESENT ANTENNA OPEN OR SHORTED SKREEM OPEN TEST ACTION APPLICABILITY With the DRBIII , read DTC’s. Turn the ignition off and remove the key. Using the RKE transmitter, operate the Door Locks several times while observing the DRBIII .

  • Page 218: Vehicle Theft/Security

    VEHICLE THEFT/SECURITY Symptom: DRIVER CYLINDER LOCK SWITCH CIRCUIT SHORT TO GROUND When Monitored and Set Condition: DRIVER CYLINDER LOCK SWITCH CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If the Driver Cylinder Lock Sense circuit is grounded for over 30 seconds, this code will set.
  • Page 219 VEHICLE THEFT/SECURITY DRIVER CYLINDER LOCK SWITCH CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Driver Cylinder Lock Switch connector. Disconnect the Security System Module. Measure the resistance between ground and the Driver Cylinder Lock Sense circuit. Is the resistance below 400.0 ohms? Yes →...

  • Page 220: Driver Cylinder Unlock Switch Circuit Short To Ground

    VEHICLE THEFT/SECURITY Symptom: DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND When Monitored and Set Condition: DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If the Driver Cylinder Unlock Circuit is closed to ground for over 30 seconds, this code will set.
  • Page 221 VEHICLE THEFT/SECURITY DRIVER CYLINDER UNLOCK SWITCH CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Driver Cylinder Lock Switch connector. Disconnect the Security System Module. Measure the resistance between ground and the Driver Cylinder Unlock Sense circuit.

  • Page 222: Front Door Jamb Switch Circuit Short To Ground

    VEHICLE THEFT/SECURITY Symptom: FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND When Monitored and Set Condition: FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If a front door jamb switch is closed or the front courtesy lamps control circuit is grounded for over 30 minutes, this code will set.
  • Page 223 VEHICLE THEFT/SECURITY FRONT DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Passenger Door Jamb Switch connector. Ensure the driver door is closed or the switch is disconnected. Observe the courtesy lamps. Did the courtesy lamps go off? Yes →...

  • Page 224: Internal Error - Ssm

    VEHICLE THEFT/SECURITY Symptom List: INTERNAL ERROR - SSM TOWING INCLINATION SENSOR BEYOND LIMITS TOWING INCLINATION SENSOR VALUE IS INVALID TOWING INCLINATION SENSOR VALUE IS MISSING Test Note: All symptoms listed above are diagnosed using the same tests. The title for the tests will be INTERNAL ERROR - SSM. When Monitored and Set Condition: INTERNAL ERROR - SSM When Monitored: Whenever the battery voltage is above 10.0 volts and the Security...
  • Page 225 VEHICLE THEFT/SECURITY INTERNAL ERROR - SSM — Continued TEST ACTION APPLICABILITY With the DRBIII , record and erase DTC’s. Cycle the ignition switch from ON to OFF to ON. Wait 10 seconds. With the DRBIII , read DTC’s. Does the DRBIII display the same DTC? Yes →...

  • Page 226: Intrusion Sensor 1 Circuit Open/Short To Ground

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND When Monitored and Set Condition: INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.
  • Page 227 VEHICLE THEFT/SECURITY INTRUSION SENSOR 1 CIRCUIT OPEN/SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Intrusion Sensor No. 1 connector. Measure the voltage of the Fused B(+) circuit. Is the voltage above 10.0 volts? Yes → Go To 4 →...

  • Page 228: Intrusion Sensor 1 Ground Circuit Open

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 1 GROUND CIRCUIT OPEN When Monitored and Set Condition: INTRUSION SENSOR 1 GROUND CIRCUIT OPEN When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.

  • Page 229: Intrusion Sensor 2 Circuit Open/Short To Ground

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 2 CIRCUIT OPEN/SHORT TO GROUND When Monitored and Set Condition: INTRUSION SENSOR 2 CIRCUIT OPEN/SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.
  • Page 230 VEHICLE THEFT/SECURITY INTRUSION SENSOR 2 CIRCUIT OPEN/SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Intrusion Sensor No. 2 connector. Measure the voltage of the Fused B(+) circuit. Is the voltage above 10.0 volts? Yes → Go To 4 →...

  • Page 231: Intrusion Sensor 2 Ground Circuit Open

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 2 GROUND CIRCUIT OPEN When Monitored and Set Condition: INTRUSION SENSOR 2 GROUND CIRCUIT OPEN When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.

  • Page 232: Intrusion Sensor 3 Circuit Open/Short To Ground

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 3 CIRCUIT OPEN/SHORT TO GROUND When Monitored and Set Condition: INTRUSION SENSOR 3 CIRCUIT OPEN/SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.
  • Page 233 VEHICLE THEFT/SECURITY INTRUSION SENSOR 3 CIRCUIT OPEN/SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Intrusion Sensor No. 3 connector. Measure the voltage of the Fused B(+) circuit. Is the voltage above 10.0 volts? Yes → Go To 4 →...

  • Page 234: Intrusion Sensor 3 Ground Circuit Open

    VEHICLE THEFT/SECURITY Symptom: INTRUSION SENSOR 3 GROUND CIRCUIT OPEN When Monitored and Set Condition: INTRUSION SENSOR 3 GROUND CIRCUIT OPEN When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Intrusion Sensor circuit.

  • Page 235: Rear Or Sliding Door Jamb Switch Circuit Short To Ground

    VEHICLE THEFT/SECURITY Symptom: REAR OR SLIDING DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND When Monitored and Set Condition: REAR OR SLIDING DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected.
  • Page 236 VEHICLE THEFT/SECURITY REAR OR SLIDING DOOR JAMB SWITCH CIRCUIT SHORT TO GROUND — Continued TEST ACTION APPLICABILITY Turn the ignition off. Disconnect the Rear Door Jamb Switch connector. Ensure the sliding door(s) are closed or the switches are disconnected. Observe the courtesy lamps. Did the courtesy lamps go off? Yes →...

  • Page 237: Rke Interface Circuit Failure - Ssm

    VEHICLE THEFT/SECURITY Symptom: RKE INTERFACE CIRCUIT FAILURE - SSM When Monitored and Set Condition: RKE INTERFACE CIRCUIT FAILURE - SSM When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If the Security System Module senses a poor or no connection to the Central Timer Module, this code will set.
  • Page 238 VEHICLE THEFT/SECURITY RKE INTERFACE CIRCUIT FAILURE - SSM — Continued TEST ACTION APPLICABILITY Disconnect the Central Timer Module C1 connector. Disconnect the Security System Module C2 connector. Measure the resistance between ground and the RKE Interface circuit. Is the resistance below 20000.0 ohms? Yes →...

  • Page 239: Security System Interface Failure - Ssm

    VEHICLE THEFT/SECURITY Symptom: SECURITY SYSTEM INTERFACE FAILURE - SSM When Monitored and Set Condition: SECURITY SYSTEM INTERFACE FAILURE - SSM When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If the Security System Module senses a poor or no connection to the Sentry Key Remote Entry Module, this code will set.
  • Page 240 VEHICLE THEFT/SECURITY SECURITY SYSTEM INTERFACE FAILURE - SSM — Continued TEST ACTION APPLICABILITY Disconnect the Sentry Key Remote Entry Module connector. Disconnect the Security System Module C2 connector. Measure the resistance between ground and the Security System Interface circuit. Is the resistance below 20000.0 ohms? Yes →...

  • Page 241: Siren Circuit Open/Shorted To Ground

    VEHICLE THEFT/SECURITY Symptom: SIREN CIRCUIT OPEN/SHORTED TO GROUND When Monitored and Set Condition: SIREN CIRCUIT OPEN/SHORTED TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects the incorrect voltage on the Siren Signal Control circuit.
  • Page 242 VEHICLE THEFT/SECURITY SIREN CIRCUIT OPEN/SHORTED TO GROUND — Continued TEST ACTION APPLICABILITY Disconnect the Siren connector. Measure the resistance of the Ground circuit at the Siren connector. Is the resistance below 5.0 ohms? Yes → Go To 5 → Repair the Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1.

  • Page 243: Siren Internal Failure

    VEHICLE THEFT/SECURITY Symptom: SIREN INTERNAL FAILURE When Monitored and Set Condition: SIREN INTERNAL FAILURE When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: If the Siren internal test fails this DTC will set. POSSIBLE CAUSES DTC PRESENT SIREN ACTUATION...

  • Page 244: Siren Signal Control Circuit Short To Ground

    VEHICLE THEFT/SECURITY Symptom: SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND When Monitored and Set Condition: SIREN SIGNAL CONTROL CIRCUIT SHORT TO GROUND When Monitored: Whenever the battery voltage is above 10.0 volts and the Security System Module is connected. Set Condition: The Security System Module detects a short to ground on the Siren Signal Control circuit.

  • Page 245: Verification Tests

    VERIFICATION TESTS Verification Tests ABS VERIFICATION TEST - VER 1 APPLICABILITY 1. Turn the ignition off. 2. Connect all previously disconnected components and connectors. 3. Ensure all accessories are turned off and the battery is fully charged. 4. Ensure that the Ignition is on, and with the DRBIII, erase all Diagnostic Trouble Codes from ALL modules.
  • Page 246 VERIFICATION TESTS Verification Tests — Continued BODY VERIFICATION TEST - VER 1 APPLICABILITY 1. Disconnect all jumper wires and reconnect all previously disconnected components and connectors. 2. Ensure that all accessories are turned off and the battery is fully charged. 3.
  • Page 247 VERIFICATION TESTS Verification Tests — Continued HEATER VERIFICATION TEST - VER 1 APPLICABILITY 1. WARNING: NEVER OPERATE THE HEATER IN AN ENCLOSED AREA THAT DOES NOT HAVE EXHAUST VENTILATION FACILITIES. ALWAYS VENT THE HEATER’s EXHAUST WHEN OPERATING THE HEATER. FAILURE TO FOLLOW THESE IN- STRUCTIONS CAN RESULT IN PERSONAL INJURY OR DEATH.
  • Page 248 VERIFICATION TESTS Verification Tests — Continued NAG1 TRANSMISSION VERIFICATION TEST - VER 1 APPLICABILITY 1. Reconnect any disconnected components. 2. Connect the DRBIII to the Data Link Connector. 3. With the DRBIII , erase ABS DTCs. 4. With the DRBIII , erase ECM DTCs. 5.

  • Page 249: Component Locations

    COMPONENT LOCATIONS 8.0 COMPONENT LOCATIONS 8.1 AIRBAG SYSTEM 8.2 AIRBAG CONTROL MODULE 8.3 DRIVER AIRBAG SQUIB...

  • Page 250: Clockspring

    COMPONENT LOCATIONS 8.4 CLOCKSPRING 8.5 SEAT BELT TENSIONER 8.6 HEATING & A/C 8.6.1 AUTOMATIC TEMPERATURE CONTROL (ATC) SYSTEM COMPONENTS...

  • Page 251: Cabin Heater & Heater Booster System

    COMPONENT LOCATIONS 8.6.2 CABIN HEATER & HEATER BOOSTER SYSTEM COMPONENTS 8.6.3 AUTO TEMP CONTROL, CABIN HEATER, & HEATER BOOSTER FUSES & RELAYS 8.6.4 EVAP TEMP SENSOR & AIR OUTLET TEMP SENSOR...

  • Page 252: Instrument Cluster

    COMPONENT LOCATIONS 8.7 INSTRUMENT CLUSTER 8.7.1 AMBIENT TEMPERATURE SENSOR 8.8 POWER DOOR LOCKS/RKE 8.8.1 CENTRAL TIMER MODULE...

  • Page 253: Sentry Key Remote Entry Module

    COMPONENT LOCATIONS 8.8.2 SENTRY KEY REMOTE ENTRY MODULE 8.8.3 DOOR LOCK MOTOR/AJAR SWITCH 8.8.4 CONTACT PLATES...

  • Page 254: Door Lock Motor/Ajar Switch Connectors

    COMPONENT LOCATIONS 8.8 POWER DOOR LOCKS/RKE (Continued) 8.8.5 DOOR LOCK MOTOR/AJAR SWITCH CONNECTORS 8.9 VEHICLE THEFT SECURITY SYSTEM 8.9.1 SECURITY SYSTEM MODULE 8.9.2 INTRUSION SENSORS...

  • Page 255: Switches

    COMPONENT LOCATIONS 8.9.3 SWITCHES 8.9.4 SIREN...
  • Page 256 NOTES...

  • Page 257: Connector Pinouts

    CONNECTOR PINOUTS 9.0 CONNECTOR PINOUTS AIR OUTLET TEMPERATURE SENSOR CIRCUIT FUNCTION 18BR/GY AIR OUTLET TEMPERATURE SENSOR SIGNAL 18BR/BL SENSOR GROUND AIRBAG CONTROL MODULE - YELLOW CIRCUIT FUNCTION 20BL DRIVER SEAT BELT TENSIONER LINE 2 20BR/YL DRIVER SEAT BELT TENSIONER LINE 1 20BL PASSENGER SEAT BELT TENSIONER LINE 2 20BR...

  • Page 258: Ambient Temperature Sensor

    CONNECTOR PINOUTS AMBIENT TEMPERATURE SENSOR CIRCUIT FUNCTION 20BL/DG AMBIENT TEMPERATURE SENSOR SIGNAL (+) 20BR/DG AMBIENT TEMPERATURE SENSOR SIGNAL RETURN AUXILIARY HEATER SWITCH CIRCUIT FUNCTION 16GY/DG/RD DAYTIME RUNNING LAMP RELAY OUTPUT 16RD/YL FUSED B(+) 16YL CABIN HEATER CONTROL 16BR GROUND BLOWER MOTOR RESISTOR BLOCK CIRCUIT FUNCTION 12YL/BK...

  • Page 259: C200 - Black (Dash Side)

    CONNECTOR PINOUTS C200 - BLACK (DASH SIDE) CIRCUIT 16GY 16GY/DG 16BK/YL 16DG/BL/WT 16YL/BL 16BL/RD 16BK/RD 16WT/BK 16WT/DG 16WT/YL 16WT/RD 16BK/RD 16VT/YL 16BR/WT 16YL 16BR/WT 16GY/RD 16BK/YL/DG 16BK/YL C200 - BLACK (MAIN BODY SIDE) CIRCUIT 16GY 16GY/DG 16BK/YL 16DG/BL/WT 16YL/BL 16BL/RD 16BK/RD 16WT/BK 16WT/DG...

  • Page 260: C205 - Yellow (Main Body Side)

    CONNECTOR PINOUTS C205 - YELLOW (MAIN BODY SIDE) CIRCUIT 20BL/DG 20BR/DG C219 - (MAIN BODY SIDE) CIRCUIT 16BK/RD 16BL/RD 16YL/WT 16DG/BK 16BK/RD 16BL/RD 16YL/RD 16DG/YL C219 - BLACK (CABIN SIDE) CIRCUIT 16BK/RD 16BL/RD 16YL/WT 16DG/BK 16BK/RD 16BL/RD 16YL/RD 16DG/YL CENTRAL TIMER MODULE C1 - PINK CIRCUIT FUNCTION 16DG/BK...

  • Page 261: Central Timer Module C2 - Lt.green

    CONNECTOR PINOUTS CENTRAL TIMER MODULE C2 - LT.GREEN CIRCUIT FUNCTION 16WT/DG PASSENGER DOOR AJAR INDICATOR DRIVER 16WT/RD MASTER DOOR LOCK SWITCH SENSE-PASSENGER DOORS 16DG/BK LEFT SLIDING DOOR UNLOCK SENSE 16DG/RD REAR DOOR UNLOCK SENSE 16YL/WT LEFT SLIDING DOOR LOCK SENSE 16YL/BK REAR DOOR LOCK SENSE 16YL/RD...

  • Page 262: Controller Antilock Brake

    CONNECTOR PINOUTS CONTROLLER ANTILOCK BRAKE CIRCUIT FUNCTION 12BR GROUND 12RD FUSED B(+) 14BR GROUND 14RD FUSED B(+) 18BL/BK K-ABS/SHIFTER ASSEMBLY 18BK LEFT FRONT WHEEL SPEED SENSOR (+) 20WT LEFT REAR WHEEL SPEED SENSOR (+) 18BR RIGHT FRONT WHEEL SPEED SENSOR(-) 18BK RIGHT FRONT WHEEL SPEED SENSOR (+) 20WT...

  • Page 263: Door Lock Motor/Ajar Switch Assembly-Driver C2

    CONNECTOR PINOUTS DOOR LOCK MOTOR/AJAR SWITCH ASSEMBLY-DRIVER C2 CIRCUIT FUNCTION 16BK/RD DRIVER DOOR UNLOCK DRIVER 16BL/RD DRIVER DOOR LOCK DRIVER DOOR LOCK MOTOR/AJAR SWITCH ASSEMBLY-LEFT SLIDING C1 CIRCUIT FUNCTION 16BK/RD PASSENGER DOORS UNLOCK DRIVER (+) 16BL/RD PASSENGER DOORS LOCK DRIVER (+) DOOR LOCK MOTOR/AJAR SWITCH ASSEMBLY-LEFT SLIDING C2 CIRCUIT FUNCTION...

  • Page 264: Door Lock Motor/Ajar Switch Assembly-Rear C1

    CONNECTOR PINOUTS DOOR LOCK MOTOR/AJAR SWITCH ASSEMBLY-REAR C1 CIRCUIT FUNCTION 16BK/RD PASSENGER DOORS UNLOCK DRIVER (+) 16BL/RD PASSENGER DOORS LOCK DRIVER (+) DOOR LOCK MOTOR/AJAR SWITCH ASSEMBLY-REAR C2 CIRCUIT FUNCTION 16YL/BK (CARGO VAN) REAR DOOR LOCK SENSE 16DG/RD (CARGO VAN) REAR DOOR UNLOCK SENSE 16YLBK (PASSENGER REAR DOOR LOCK SENSE...

  • Page 265: Engine Control Module C2 - Black

    CONNECTOR PINOUTS ENGINE CONTROL MODULE C2 - BLACK CIRCUIT FUNCTION 18BR/DG KICKDOWN SWITCH SIGNAL 18BR SENSOR GROUND 20DG/WT CAN C BUS (+) 20DG CAN C BUS (-) 18BK FUSED IGNITION SWITCH OUTPUT (RUN-START) 18DG ACCEL/SET SIGNAL 18YL DECEL/SET SIGNAL 20DG ENHANCED ACCIDENT REPORT DRIVER 18RD S/C SWITCH 12 VOLT SUPPLY...

  • Page 266: Fuel Level Sensor

    CONNECTOR PINOUTS FUEL LEVEL SENSOR CIRCUIT FUNCTION 20BL/BK FUEL LEVEL SENSOR SIGNAL (+) 20BR FUEL LEVEL SENSOR SIGNAL RETURN FUSE BLOCK NO. 1 C2 CIRCUIT FUNCTION 14BK/RD FUSED IGNITION SWITCH OUTPUT (RUN) 14BK/YL FUSED IGNITION SWITCH OUTPUT (START) 16GY/DG FUSED IGNITION SWITCH OUTPUT (ACC OFF) 14BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
  • Page 267 CONNECTOR PINOUTS...

  • Page 268: Fuses (Fuse Block No. 1)

    CONNECTOR PINOUTS FUSES (FUSE BLOCK NO. 1) CIRCUIT FUNCTION 16GY/RD FUSED B(+) 16WT FUSED HIGH BEAM SWITCH OUTPUT 16WT FUSED HIGH BEAM SWITCH OUTPUT 16BK/BL FUSED IGNITION SWITCH OUTPUT (RUN-START) 16BK/BL/WT FUSED IGNITION SWITCH OUTPUT (RUN-START) INTERNAL FUSED IGNITION SWITCH OUTPUT (RUN-START) 16BK/YL FUSED IGNITION SWITCH OUTPUT (RUN-START) 16RD/YL...

  • Page 269: Fuses (Fuse Block No. 3)

    CONNECTOR PINOUTS FUSES (FUSE BLOCK NO. 3) CIRCUIT FUNCTION 16RD FUSED B(+) 16RD/DG FUSED B(+) 12RD/DG FUSED B(+) 14RD FUSED B(+) 16RD FUSED B(+) 14RD FUSE B(+) 16BK OPTIONAL EQUIPMENT RELAY OUTPUT 12RD/WT FUSED B(+) 16RD/BK/WT FUSED B(+) 16RD/GY FUSED B(+) 14RD FUSED B(+) 10BK...

  • Page 270: Hood Ajar Switch - Black

    CONNECTOR PINOUTS HOOD AJAR SWITCH - BLACK CIRCUIT FUNCTION 16BK/BL HOOD AJAR SWITCH SENSE 16BR GROUND INSTRUMENT CLUSTER C1 CIRCUIT FUNCTION 20BR FUEL LEVEL SENSOR SIGNAL RETURN 20BR/DG AMBIENT TEMPERATURE SENSOR SIGNAL RETURN 20WT/GY K-IC/ATC/HBM/CHM 20BR/BK BRAKE INDICATOR SIGNAL 20BK/DG RIGHT TURN SIGNAL 20BL/BK FUEL LEVEL SENSOR SIGNAL (+)

  • Page 271: Intrusion Sensor No. 1 - Black

    CONNECTOR PINOUTS INTRUSION SENSOR NO. 1 - BLACK CIRCUIT FUNCTION 20BR GROUND 20DG/BK INTRUSION SENSOR 1 SIGNAL 20DG/YL INTRUSION SENSOR INTERFACE 20RD/DG FUSED B(+) INTRUSION SENSOR NO. 2 - BLACK CIRCUIT FUNCTION 20BR GROUND 20GY/BK INTRUSION SENSOR 2 SIGNAL 20DG/YL INTRUSION SENSOR INTERFACE 20RD/DG FUSED B(+)

  • Page 272: Recirculated Air Solenoid Valve

    CONNECTOR PINOUTS RECIRCULATED AIR SOLENOID VALVE CIRCUIT FUNCTION 16RD RECIRCULATED AIR SOLENOID VALVE CONTROL 16BK GROUND REFRIGERANT PRESSURE SENSOR CIRCUIT FUNCTION 18BR/BL SENSOR GROUND 20BR/RD REFRIGERANT PRESSURE SENSOR FEEDBACK 20RD/BL 5 VOLT SUPPLY...
  • Page 273 CONNECTOR PINOUTS...

  • Page 274: A/C Auxiliary Fan Relay (In Relay Block)

    CONNECTOR PINOUTS A/C AUXILIARY FAN RELAY (IN RELAY BLOCK) CIRCUIT FUNCTION 14BL/YL FUSED B(+) 18BR GROUND 18BK/RD A/C AUXILIARY FAN RELAY HIGH SIDE CONTROL 14DG/WT A/C AUXILIARY FAN RELAY OUTPUT A/C AUXILIARY FAN CIRCUIT FUNCTION 14DG/BK A/C AUXILIARY FAN RELAY OUTPUT 14DG/BL A/C AUXILIARY FAN RELAY OUTPUT 14BR...

  • Page 275: Turn Signal/Anti-Theft Alarm Relay-Right (Relay Block)

    CONNECTOR PINOUTS TURN SIGNAL/ANTI-THEFT ALARM RELAY-RIGHT (RELAY BLOCK) CIRCUIT FUNCTION 16RD/YL FUSED B(+) 18RD/YL FUSED B(+) 18DG/YL TURN SIGNAL/ANTI-THEFT ALARM RELAY-LEFT/RIGHT CONTROL 16BK/DG RIGHT TURN SIGNAL...

  • Page 276: Remote Keyless Entry Antenna

    CONNECTOR PINOUTS REMOTE KEYLESS ENTRY ANTENNA CIRCUIT FUNCTION 20BR RKE ANTENNA GROUND SEAT BELT TENSIONER-DRIVER - YELLOW CIRCUIT FUNCTION 20BL DRIVER SEAT BELT TENSIONER LINE 2 20BR/YL DRIVER SEAT BELT TENSIONER LINE 1 SEAT BELT TENSIONER-PASSENGER - YELLOW CIRCUIT FUNCTION 20BL PASSENGER SEAT BELT TENSIONER LINE 2 20BR...

  • Page 277: Security System Module C1 - Brown

    CONNECTOR PINOUTS SECURITY SYSTEM MODULE C1 - BROWN CIRCUIT FUNCTION 16BK/WT LEFT TURN SIGNAL 16BK/DG RIGHT TURN SIGNAL 16BK/VT FAN STAGE 1 RELAY 16WT/RD WARM AIR AUXILIARY HEATER CONTROL 16RD/GY FUSED B(+) 16BK/GY FUSED OPTIONAL EQUIPMENT RELAY OUTPUT 18VT/DG TOWING/INTRUSION SENSOR INDICATOR DRIVER 16BR/YL FRONT COURTESY LAMPS CONTROL 16BR/WT...

  • Page 278: Shifter Assembly - Black

    CONNECTOR PINOUTS SHIFTER ASSEMBLY - BLACK CIRCUIT FUNCTION 20GY/DG/RD LAMP DRIVER 20BL/DG K-ABS/SHIFTER ASSEMBLY 18BR GROUND 20BK/BL/RD BRAKE LAMP SWITCH 20DG/WT CAN C BUS (+) 20DG CAN C BUS (-) 18BK/DG TRANSMISSION RELAY OUTPUT 16WT/BL/RD FUSED IGNITION SWITCH OUTPUT (RUN-START) 16WT/RD BACK-UP LAMP SIREN - BLACK...

  • Page 279: Transmission Control Module C2 - Black

    CONNECTOR PINOUTS TRANSMISSION CONTROL MODULE C2 - BLACK CIRCUIT FUNCTION 20BL/GY N2 INPUT SPEED SENSOR 20BK/BL SENSOR SUPPLY VOLTAGE 16WT 1-2/4-5 SOLENOID CONTROL 16YL 3-4 SOLENOID CONTROL 16WT/BL 2-3 SOLENOID CONTROL 16YL/BL TCC SOLENOID CONTROL 20PK SENSOR GROUND 20GY/BL TEMPERATURE SENSOR-P/N SWITCH 20BL/DG N3 INPUT SPEED SENSOR 16BR/GY...
  • Page 280 NOTES...

  • Page 281: Schematic Diagrams

    SCHEMATIC DIAGRAMS 10.0 SCHEMATIC DIAGRAMS 10.1 AIRBAG SYSTEM...

  • Page 282: Communication

    SCHEMATIC DIAGRAMS 10.2 COMMUNICATION 10.2.1 COMMUNICATION K-LINES...

  • Page 283: Can Bus Network

    SCHEMATIC DIAGRAMS 10.2.2 CAN BUS NETWORK...

  • Page 284: Heating & A/C

    SCHEMATIC DIAGRAMS 10.3 HEATING & A/C 10.3.1 AUTOMATIC TEMPERATURE CONTROL (ATC)

  • Page 285: Cabin Heater Module (Chm)

    SCHEMATIC DIAGRAMS 10.3.2 CABIN HEATER MODULE (CHM)

  • Page 286: Heater Booster Module (Hbm)

    SCHEMATIC DIAGRAMS 10.3 HEATING & A/C (Continued) 10.3.3 HEATER BOOSTER MODULE (HBM)

  • Page 287: Instrument Cluster

    SCHEMATIC DIAGRAMS 10.4 INSTRUMENT CLUSTER...

  • Page 288: Power Door Locks/Rke

    SCHEMATIC DIAGRAMS 10.5 POWER DOOR LOCKS/RKE 10.5.1 FRONT DOORS...

  • Page 289: Sliding And Rear Doors

    SCHEMATIC DIAGRAMS 10.5.2 SLIDING AND REAR DOORS...

  • Page 290: Switch And Miscellaneous Circuits

    SCHEMATIC DIAGRAMS 10.5 POWER DOOR LOCKS/RKE (Continued) 10.5.3 SWITCH AND MISCELLANEOUS CIRCUITS...

  • Page 291: Vehicle Theft Security System

    SCHEMATIC DIAGRAMS 10.6 VEHICLE THEFT SECURITY SYSTEM...
  • Page 292 NOTES...

  • Page 293: Charts And Graphs

    CHARTS AND GRAPHS 11.0 CHARTS AND GRAPHS 11.1 EVAP TEMP SENSOR RESISTANCE TO TEMPERATURE SPECIFICATIONS 11.2 AIR OUTLET TEMP SENSOR RESISTANCE TO TEMPERATURE SPECIFICATIONS...
  • Page 294 NOTES...
  • Page 295 DIAGNOSTIC TEST PROCEDURES — TELL US! DaimlerChrysler Corporation is constantly working to provide the technician the best diagnostic manuals possible. Your comments and recommendations regarding the diagnostic manuals and procedures are appreciated. To best understand your suggestion, please complete the form giving us as much detail as possible. Model Year Body Type...
  • Page 296 Dealer Technical Operations 800 Chrysler Drive CIMS 486-02-76 Auburn Hills, MI 48326-2757...

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