Retrieving & Clearing Diagnostic Trouble Codes

NOTE: Before proceeding with diagnosis, certain precautions must be followed. See PRETEST INSPECTION under SELF-DIAGNOSTIC SYSTEM.

Diagnostic procedures are designed to detect system faults as quickly as possible. Body control computer system diagnostic fault messages are accessed through Data Link Connector (DLC). See Figure. Procedures are written specifically for Chrysler's Diagnostic Readout Box (DRB) scan tool. Generic scan tool can be used but may have limited functionality.

Turn ignition off. Connect scan tool to DLC. Turn ignition on. Using scan tool, attempt to communicate with all modules. If communications was established with all module, go to next step. If communications was not established with any module, perform appropriate test under COMMUNICATIONS under SYSTEM TESTS.
NOTE: Codes are listed by system effected and not by module retrieved from. Perform appropriate test under appropriate section under SYSTEM TESTS .
Using scan tool, retrieve Diagnostic Trouble Codes (DTC) from all modules. If any DTCs exist, perform appropriate test(s) under SYSTEM TESTS. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If no DTCs exist, but a symptom is present, repair by symptom. See SYMPTOM IDENTIFICATION table.
After repairs are made, clear any DTCs using scan tool and perform appropriate verification test.

DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Effected System ⁽¹⁾

DTC ⁽²⁾

Air Bag

⁽³⁾

A/C-Heater System

⁽⁴⁾

Communications

BATTERY IOD DISCONNECT AT BODY CONTROL MODULE (BCM)

BODY CONTROL MODULE (BCM) EEPROM CHECKSUM FAILURE

BODY CONTROL MODULE (BCM) FLASH CHECKSUM FAILURE

DRIVER'S DOOR MODULE (DDM) MESSAGE NOT RECEIVED

MECHANICAL INSTRUMENT CLUSTER (MIC) MESSAGE NOT RECEIVED AT BODY CONTROL MODULE (BCM)

NO PCI MESSAGES FROM CD CHANGER

POWERTRAIN CONTROL MODULE (PCM) MESSAGE NOT RECEIVED AT BODY CONTROL MODULE (BCM)

PASSENGER'S DOOR MODULE (PDM) MESSAGE NOT RECEIVED AT BODY CONTROL MODULE (BCM)

BUS +/- SIGNALS OPEN FROM MEMORY/HEATED SEAT MODULE (MHSM)

BUS +/- SIGNALS OPEN FROM AUTOMATIC ZONE CONTROL (AZC) MODULE

BUS +/- SIGNAL OPEN FROM BODY CONTROL MODULE (BCM)

BUS +/- SIGNALS OPEN FROM DRIVER'S DOOR MODULE (DDM)

BUS +/- SIGNALS OPEN FROM ELECTRONIC VEHICLE INFORMATION CENTER (EVIC)

BUS +/- SIGNALS OPEN FROM MECHANICAL INSTRUMENT CLUSTER (MIC)

BUS +/- SIGNALS OPEN FROM PASSENGER'S DOOR MODULE (PDM)

BUS +/- SIGNALS OPEN FROM SENTRY KEY IMMOBILIZER MODULE (SKIM)

Electronically Heated Systems

DRIVER'S SEAT HEAT OUTPUT OPEN/SHORT TO VOLTAGE

DRIVER'S SEAT HEAT OUTPUT SHORT TO GROUND

DRIVER'S THERMISTOR OUT OF RANGE HIGH

DRIVER'S THERMISTOR OUT OF RANGE LOW

PASSENGER'S SEAT HEAT OUTPUT OPEN/SHORT TO VOLTAGE

PASSENGER'S SEAT HEAT OUTPUT SHORT TO GROUND

PASSENGER'S THERMISTOR OUT OF RANGE HIGH

PASSENGER'S THERMISTOR OUT OF RANGE LOW

REAR DEFOGGER RELAY SHORTED HIGH

REAR DEFOGGER RELAY OPEN

Exterior Lighting

FOG LIGHT RELAY CKT SHORTED HI

FOG LIGHT RELAY CKT SHORTED LO/OPEN

HAZARD RELAY CKT SHORTED HI

HEADLAMP SW OPEN CKT

HEADLAMP SW SHORT TO GROUND

HIGH BEAM RELAY CKT SHORTED HI

LOW BEAM RELAY CKT SHORTED HI

LOW BEAM RELAY CKT SHORTED LO/OPEN

PARK LIGHT RELAY CKT SHORTED HI

PARK LIGHT RELAY CKT SHORTED LO/OPEN

Instrument Cluster

ABS LIGHT CIRCUIT SHORT

ABS MESSAGE NOT RECEIVED BY MIC

ACM MESSAGE NOT RECEIVED BY MIC

AIR BAG LAMP DRIVER FAILURE

AIR BAG LAMP OPEN

BCM MESSAGES NOT RECEIVED BY MIC

BRAKE LIGHT CIRCUIT SHORT

BRAKE LIGHT OPEN

JTEC MESSAGE NOT RECEIVED BY MIC

SKIM MESSAGE NOT RECEIVED BY MIC

Interior Lighting

DIM SW SHORT TO GROUND

DIM SW OPEN CKT

LIGHT FADE FAILURE SHORT TO BATTERY

LOAD SHED FAILURE SHORT TO BATTERY

PANEL LIGHT DRIVER FAILURE

Memory Seat

FRONT RISER OUT OF RANGE HIGH

FRONT RISER OUT OF RANGE LOW

HORIZONTAL SENSOR OUT OF RANGE HIGH

HORIZONTAL SENSOR OUT OF RANGE LOW

REAR RISER OUT OF RANGE HIGH

REAR RISER OUT OF RANGE LOW

RECLINE SENSOR OUT OF RANGE HIGH

RECLINE SENSOR OUT OF RANGE LOW

Overhead Console

AMBIENT TEMPERATURE SENSOR CKT OPEN

AMBIENT TEMPERATURE SENSOR CKT SHORT TO GROUND

BUS MESSAGES MISSING

COOLANT LEVEL SWITCH CIRCUIT OPEN

EVIC INTERNAL FAILURE

Power Top

ACCESSORY (SUNROOF) DELAY RELAY SHORTED HI

Vehicle Theft Security System

HORN RELAY CKT SHORTED HI

ANTENNA FAILURE

INTERNAL FAULTS

SERIAL LINK FAILURE

STACK OVERFLOW FAILURE

PCM STATUS FAILURE

ROLLING CODE FAILURE

SERIAL LINK EXTERNAL FAULT

TRANSPONDER CYCLIC REDUNDANCY CHECK (CRC) FAILURE

TRANSPONDER COMMUNICATION FAILURE

TRANSPONDER ID MISMATCH

TRANSPONDER RESPONSE MISMATCH

Windshield Wiper

WASHER FLUID SENSOR FAILURE

WIPER ON/OFF RELAY SHORTED HIGH

WIPER ON/OFF RELAY SHORTED LOW/OPEN CIRCUIT

WIPER PARK FAILURE

WIPER SWITCH MUX CKT OPEN

WIPER SWITCH MUX CKT SHORT TO GROUND

⁽¹⁾	Codes are listed by system effected and not by module retrieved from. Perform appropriate test under appropriate section under SYSTEM TESTS.

⁽²⁾	For powertrain system diagnostic trouble codes and testing procedures, see SELF-DIAGNOSTICS - GRAND CHEROKEE article in ENGINE PERFORMANCE.

⁽³⁾	For airbag system diagnostic trouble codes and testing procedures, see DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25® AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

⁽⁴⁾	For heating and air conditioning systems diagnostic trouble codes and testing procedures, see appropriate MANUAL A/C-HEATER SYSTEMS or AUTOMATIC article in AIR CONDITIONING & HEATING.

SYMPTOM IDENTIFICATION

Effected System ⁽¹⁾

Symptom Description

Air Bag

⁽²⁾

A/C-Heater System

⁽³⁾

Chime

CHIME INOPERATIVE AT ALL TIMES

CHIME INOPERATIVE WITH DRIVER'S SEAT BELT UNFASTENED

CHIME SOUNDS WITH DRIVER'S DOOR OPEN

CHIME SOUNDS WITH SEAT BELT FASTENED

Communications

NO RESPONSE FROM AIR BAG CONTROL MODULE (ACM)

NO RESPONSE FROM CONTROLLER ANTI-LOCK BRAKE (CAB)

NO RESPONSE FROM POWERTRAIN CONTROL MODULE (PCI BUS)

NO RESPONSE FROM RADIO

NO RESPONSE FROM TRANSMISSION CONTROL MODULE (TCM)

PCI BUS COMMUNICATION FAILURE

UNABLE TO COMMUNICATE WITH DRIVER'S DOOR MODULE (DDM) &/OR PASSENGER'S DOOR MODULE (PDM) USING SCAN TOOL

Electrically Heated Systems

DRIVER'S/PASSENGER'S SEAT BACK HEATER INOPERATIVE

DRIVER'S/PASSENGER'S SEAT BOLSTER HEATER INOPERATIVE

DRIVER'S/PASSENGER'S SEAT CUSHION HEATER INOPERATIVE

REAR DEFOGGER RELAY SHORTED HIGH

REAR DEFOGGER RELAY OPEN

REAR WINDOW DEFOGGER GRID INOPERATIVE

REAR DEFOGGER SWITCH INDICATOR INOPERATIVE (REAR WINDOW DEFOGGER OPERATES)

Exterior Lights

AUTO HEADLIGHTS WILL NOT TURN OFF

AUTO HEADLIGHTS WILL NOT TURN ON

FLASH TO PASS INOPERATIVE

FOG LIGHTS WILL NOT TURN OFF

FOG LIGHTS WILL NOT TURN ON

HIGH BEAM HEAD LIGHTS WILL NOT TURN OFF

HIGH BEAM HEAD LIGHTS WILL NOT TURN ON

LOW BEAM HEADLIGHTS WILL NOT TURN OFF

LOW BEAM HEADLIGHTS WILL NOT TURN ON

PARKING LIGHTS WILL NOT TURN OFF

PARKING LIGHTS WILL NOT TURN ON

Instrument Cluster

AIR BAG INDICATOR NOT OPERATING PROPERLY

ALL GAUGES INOPERATIVE

ALL INDICATORS INOPERATIVE

BRAKE INDICATOR NOT OPERATING PROPERLY

CHECK ENGINE INDICATOR NOT OPERATING PROPERLY

CHECK GAUGES INDICATOR NOT OPERATING PROPERLY

CLUSTER ILLUMINATION FAILURE

CRUISE INDICATOR NOT OPERATING PROPERLY

FUEL GAUGE NOT OPERATING PROPERLY

HIGH BEAM INDICATOR NOT OPERATING PROPERLY

LOW FUEL INDICATOR NOT OPERATING PROPERLY

O/D OFF INDICATOR NOT OPERATING PROPERLY

OIL PRESSURE GAUGE NOT OPERATING PROPERLY

SEAT BELT INDICATOR NOT OPERATING PROPERLY

SENTRY KEY IMMOBILIZER SYSTEM INDICATOR (SKIS) NOT OPERATING PROPERLY

SPEEDOMETER NOT OPERATING PROPERLY

TACHOMETER NOT OPERATING PROPERLY

TEMPERATURE GAUGE NOT OPERATING PROPERLY

TRANS OVER TEMP INDICATOR NOT OPERATING PROPERLY

VOLTMETER INOPERATIVE

Interior Lights

ALL COURTESY LIGHTS INOPERATIVE

ASH TRAY LIGHT INOPERATIVE

COURTESY LIGHTS INOPERATIVE (EXCEPT FRONT DOORS)

COURTESY LIGHTS INOPERATIVE FROM DOME LIGHT SWITCH ONLY

COURTESY LIGHTS INOPERATIVE FROM DRIVERS FRONT DOOR ONLY

COURTESY LIGHTS INOPERATIVE FROM LEFT REAR DOOR ONLY

COURTESY LIGHTS INOPERATIVE FROM LIFTGATE

COURTESY LIGHTS INOPERATIVE FROM LIFTGATE FLIP-UP GLASS ONLY

COURTESY LIGHTS INOPERATIVE FROM PASSENGER FRONT DOOR ONLY

COURTESY LIGHTS INOPERATIVE FROM RIGHT REAR DOOR ONLY

COURTESY LIGHTS ON AT ALL TIMES (EXCEPT BOTH FRONT DOOR COURTESY LIGHTS IF EQUIPPED)

DRIVER'S DOOR COURTESY LIGHT INOPERATIVE

GLOVE BOX LIGHT INOPERATIVE

HEATED SEAT SWITCH ILLUMINATION LIGHT INOPERATIVE

HVAC CONTROL ILLUMINATION LIGHTS INOPERATIVE

LIFTGATE COURTESY LIGHT DISABLE FEATURE INOPERATIVE

OVERHEAD, REAR & LIFTGATE COURTESY LIGHTS INOPERATIVE

PASSENGER DOOR COURTESY LIGHT INOPERATIVE

PRNDL/T-CASE ILLUMINATION LIGHTS INOPERATIVE

RADIO ILLUMINATION LIGHTS INOPERATIVE

READING & VANITY LIGHTS INOPERATIVE

Memory Seat

DRIVER SEAT FRONT RISER MOVEMENT INOPERATIVE

DRIVER SEAT HORIZONTAL MOVEMENT INOPERATIVE

DRIVER SEAT REAR RISER MOVEMENT INOPERATIVE

DRIVER SEAT RECLINER MOVEMENT INOPERATIVE

Overhead Console

EVIC MILEAGE AND DISTANCE FUNCTIONS

INCORRECT AMBIENT TEMPERATURE READING

LOW COOLANT INDICATOR ON ALL THE TIME

LOW WASHER FLUID INDICATOR ON ALL THE TIME

Power Door Locks/Remote Keyless Entry (RKE)

ALL DOORS (EXCEPT DRIVER'S) DOOR FAIL TO LOCK/UNLOCK

ALL DOORS (EXCEPT DRIVER'S) DOOR FAILS TO LOCK

ALL DOORS (EXCEPT DRIVER'S) DOOR FAILS TO UNLOCK

ALL LOCKS INOPERATIVE FROM DRIVER'S DOOR MODULE

ALL LOCKS INOPERATIVE FROM PASSENGER'S DOOR MODULE

AUTOMATIC DOOR LOCKS INOPERATIVE

DOORS LOCK WITH KEY IN IGNITION & FRONT DOOR OPEN

DRIVER DOOR FAILS TO LOCK

DRIVER'S DOOR FAILS TO LOCK & UNLOCK

DRIVER DOOR FAILS TO UNLOCK

DRIVER'S REAR DOOR FAILS TO LOCK & UNLOCK

LIFTGATE LOCK FAILS TO LOCK/UNLOCK

PASSENGER DOOR FAILS TO LOCK & UNLOCK

PASSENGER REAR DOOR FAILS TO LOCK & UNLOCK

RKE TRANSMITTER INOPERATIVE

Power Mirror

BOTH MEMORY MIRRORS INOPERATIVE

DRIVER MEMORY MIRROR INOPERATIVE

PASSENGER MEMORY MIRROR INOPERATIVE

Power Top

SUNROOF FAILS TO CLOSE WITH IGNITION OFF

SUNROOF FAILS TO OPEN WITH IGNITION OFF

SUNROOF MOTOR INOPERATIVE

Power Windows

DRIVER REAR WINDOW INOPERATIVE FROM BOTH SWITCHES

DRIVER'S REAR WINDOW INOPERATIVE FROM DDM (DRIVER'S FRONT DOOR SWITCH)

DRIVER'S REAR WINDOW INOPERATIVE FROM REAR SWITCH

DRIVER'S WINDOW INOPERATIVE

PASSENGER'S REAR WINDOW INOPERATIVE FROM BOTH SWITCHES

PASSENGER'S REAR WINDOW INOPERATIVE FROM DDM (DRIVER'S FRONT DOOR SWITCH)

PASSENGER'S REAR WINDOW INOPERATIVE FROM REAR SWITCH

PASSENGER'S WINDOW INOPERATIVE FROM BOTH SWITCHES

PASSENGER'S WINDOW INOPERATIVE FROM DDM (DRIVER'S FRONT DOOR SWITCH)

PASSENGER'S WINDOW INOPERATIVE FROM PDM

Vehicle Theft Security System

ALARM TRIPS WITHOUT CAUSE

DRIVER'S DOOR KEY FAILS TO DISARM VTSS

HAZARD LIGHTS FAIL TO FLASH WITH ALARM TRIPPED

HEADLIGHTS FAIL TO FLASH WITH ALARM TRIPPED

HORN FAILS TO SOUND WITH ALARM TRIPPED

THEFT ALARM WILL NOT ARM

VTSS DOES NOT TRIP FROM DRIVER'S FRONT DOOR

VTSS DOES NOT TRIP FROM HOOD (IF EQUIPPED)

VTSS DOES NOT TRIP FROM LEFT REAR DOOR

VTSS DOES NOT TRIP FROM LIFTGATE

VTSS DOES NOT TRIP FROM LIFTGATE FLIP-UP GLASS ONLY

VTSS DOES NOT TRIP FROM PASSENGER FRONT DOOR

VTSS DOES NOT TRIP FROM RIGHT REAR DOOR

VTSS INDICATOR INOPERATIVE

Windshield Wiper/Washer

REAR WASHER, RUNS ALL THE TIME WITH IGNITION ON

REAR WASHER INOPERATIVE

REAR WIPER NOT WORKING AT ALL

REAR WIPER OPERATES CONSTANTLY WITH IGNITION ON

REAR WIPER NOT WORKING IN DELAY POSITION

REAR WIPER NOT WORKING IN ON POSITION

REAR WIPERS MOVE TO PARK POSITION WITH SWITCH IN ON OR DELAY POSITION

WASHER INOPERATIVE

WASHER RUNS ALL THE TIME WITH IGNITION ON

WIPER NOT WORKING IN LOW SPEED

WIPER ERRATIC OPERATION IN INTERMITTENT SPEEDS

WIPER INOPERATIVE WITH WASH FUNCTION

WIPER NOT WORKING AT ALL

WIPER NOT WORKING IN HIGH SPEED

ONE OR MORE WIPER INTERMITTENT SPEEDS INOPERATIVE

WIPER OPERATES CONSTANTLY WITH IGNITION ON

⁽¹⁾	Symptoms are listed by system effected. Perform appropriate test under appropriate section under SYSTEM TESTS.

⁽²⁾	For airbag system symptom testing procedures, see DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25® AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

⁽³⁾	For heating and air conditioning systems symptom testing procedures, see appropriate MANUAL A/C-HEATER SYSTEMS or AUTOMATIC article in AIR CONDITIONING & HEATING.