Retrieving Diagnostic Trouble Codes

If preliminary inspection procedure has not been performed, perform preliminary inspection. See PRELIMINARY INSPECTION under TROUBLE SHOOTING. If preliminary inspection procedure has been performed, go to next step.
Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located under left side of instrument panel. See Figure . Turn ignition on. Using scan tool, attempt to communicate with all modules. If communication was not established with any module, perform appropriate test under COMMUNICATIONS in SYSTEM TESTS. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION and SYMPTOM IDENTIFICATION tables. If communication was established with all modules, go to next step.
Using scan tool, retrieve Diagnostic Trouble Codes (DTC) from all modules. If any DTCs exist, perform appropriate test. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table. If no DTCs exist, repair by symptom. For powertrain system diagnostic trouble codes and testing procedures, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.

DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Affected System ⁽¹⁾

⁽²⁾ DTC

Air Bag

⁽³⁾ ACCELEROMETER 1

.....

⁽³⁾ ACCELEROMETER 2

.....

⁽³⁾ INTERNAL 1

.....

⁽³⁾ INTERNAL 2

.....

⁽³⁾ OUTPUT DRIVER 1

.....

⁽³⁾ OUTPUT DRIVER 2

.....

⁽³⁾ STORED ENERGY FIRING 1

.....

⁽³⁾ AIR BAG WARNING INDICATOR OPEN

.....

⁽³⁾ AIR BAG WARNING INDICATOR SHORT

.....

⁽³⁾ CALIBRATION MISMATCH

.....

⁽³⁾ CLUSTER MESSAGE MISMATCH

.....

⁽³⁾ CONFIGURATION ERROR

.....

⁽³⁾ CURTAIN SQUIB CIRCUIT OPEN

.....

⁽³⁾ CURTAIN SQUIB CIRCUIT SHORT

.....

⁽³⁾ CURTAIN SQUIB SHORT TO BATTERY

.....

⁽³⁾ CURTAIN SQUIB SHORT TO GROUND

.....

⁽³⁾ DRIVER SEAT BELT TENSIONER CIRCUIT OPEN

.....

⁽³⁾ DRIVER SEAT BELT TENSIONER CIRCUIT SHORT

.....

⁽³⁾ DRIVER SEAT BELT TENSIONER SHORT TO BATTERY

.....

⁽³⁾ DRIVER SEAT BELT TENSIONER SHORT TO GROUND

.....

⁽³⁾ DRIVER SQUIB 1 CIRCUIT OPEN

.....

⁽³⁾ DRIVER SQUIB 1 CIRCUIT SHORT

.....

⁽³⁾ DRIVER SQUIB 1 SHORT TO BATTERY

.....

⁽³⁾ DRIVER SQUIB 1 SHORT TO GROUND

.....

⁽³⁾ DRIVER SQUIB 2 CIRCUIT OPEN

.....

⁽³⁾ DRIVER SQUIB 2 CIRCUIT SHORT

.....

⁽³⁾ DRIVER SQUIB 2 SHORT TO BATTERY

.....

⁽³⁾ DRIVER SQUIB 2 SHORT TO GROUND

.....

⁽³⁾ INTERROGATE LEFT SIACM

.....

⁽³⁾ INTERROGATE RIGHT SIACM

.....

⁽³⁾ LOSS OF IGNITION RUN - START

.....

⁽³⁾ LOSS OF IGNITION RUN ONLY

.....

⁽³⁾ MODULE NOT CONFIGURED FOR SAB

.....

⁽³⁾ NO CLUSTER MESSAGE

.....

⁽³⁾ NO LEFT SIACM MESSAGE

.....

⁽³⁾ NO ODOMETER MESSAGE

.....

⁽³⁾ NO PCI TRANSMISSION

.....

⁽³⁾ NO RIGHT SIACM MESSAGE

.....

⁽³⁾ PASSENGER SEAT BELT TENSIONER CIRCUIT OPEN

.....

⁽³⁾ PASSENGER SEAT BELT TENSIONER CIRCUIT SHORT

.....

⁽³⁾ PASSENGER SEAT BELT TENSIONER SHORT TO BATTERY

.....

⁽³⁾ PASSENGER SEAT BELT TENSIONER SHORT TO GROUND

.....

⁽³⁾ PASSENGER SQUIB 1 CIRCUIT OPEN

.....

⁽³⁾ PASSENGER SQUIB 1 CIRCUIT SHORT

.....

⁽³⁾ PASSENGER SQUIB 1 CIRCUIT SHORT TO BATTERY

.....

⁽³⁾ PASSENGER SQUIB 1 SHORT TO GROUND

.....

⁽³⁾ PASSENGER SQUIB 2 CIRCUIT OPEN

.....

⁽³⁾ PASSENGER SQUIB 2 CIRCUIT SHORT

.....

⁽³⁾ PASSENGER SQUIB 2 SHORT TO BATTERY

.....

⁽³⁾ PASSENGER SQUIB 2 SHORT TO GROUND

.....

⁽³⁾ VEHICLE BODY STYLE UNKNOWN

Audio

ALL OUTPUTS SHORT - PREMIUM AUDIO SYSTEM

.....

ALL OUTPUTS SHORT - BASE AUDIO SYSTEM

.....

CASSETTE PLAYER INOP

.....

CD MECHANICAL FAILURE

.....

CD CHANGER MECHANICAL FAILURE

.....

CD CHANGER READ FAILURE

.....

CD CHANGER TEMPERATURE HIGH

.....

CD READ FAILURE

.....

CD TEMPERATURE HIGH

.....

NO ANTENNA CONNECTION

.....

POWER AMP SHUTDOWN - BASE AUDIO SYSTEM

.....

POWER AMP SHUTDOWN - PREMIUM AUDIO SYSTEM

Communications

BATTERY POWER TO MODULE DISCONNECTED

.....

BOOTLOADER CHECKSUM FAILURE

.....

EEPROM CHECKSUM FAILURE

.....

MIC MESSAGES NOT RECEIVED

.....

ORC MESSAGES NOT RECEIVED

.....

PCM MESSAGES NOT RECEIVED

.....

.....

SKIM MESSAGES NOT RECEIVED

.....

TCM MESSAGES NOT RECEIVED

.....

TRAVELER MESSAGES NOT RECEIVED (CMTC)

Compass/Mini-Trip Computer

BCM MESSAGE NOT RECEIVED

.....

COMPASS FAILURE

.....

INTERNAL FAILURE

.....

PCM MESSAGE NOT RECEIVED

Heating & A/C

A/C BLEND DOOR INPUT SHORTED TO BATTERY

.....

A/C BLEND DOOR INPUT OPEN/SHORT TO GROUND

.....

A/C HEAD, A/C SWITCH FAILURE

.....

A/C HEAD, EBL INPUT SHORTED TO BATTERY

.....

A/C HEAD, EBL INPUT SHORTED TO GROUND

.....

A/C HEAD, EBL SWITCH STUCK

.....

A/C MODE DOOR INPUT OPEN/SHORT TO GROUND

.....

A/C MODE DOOR INPUT OPEN/SHORT TO BATTERY

.....

BLEND DOOR FEEDBACK FAILURE

.....

BLEND DOOR OUTPUT SHORTED TO BATTERY

.....

BLEND DOOR OUTPUT SHORTED TO GROUND

.....

BLEND DOOR STALL TEST FAILURE

.....

COMMON OUTPUT SHORTED TO BATTERY

.....

COMMON OUTPUT SHORTED TO GROUND

.....

EVAPORATOR SENSOR FAILURE

.....

MODE DOOR FEEDBACK FAILURE

.....

MODE DOOR OUTPUT SHORTED TO BATTERY

.....

MODE DOOR OUTPUT SHORTED TO GROUND

.....

MODE DOOR STALL TEST FAILURE

.....

RECIRC DOOR OUTPUT SHORTED TO BATTERY

.....

RECIRC DOOR OUTPUT SHORTED TO GROUND

.....

RECIRCULATION DOOR TEST FAILURE (INOPERATIVE OR STALL)

Instrument Cluster

ABS LIGHT CIRCUIT OPEN

.....

ABS LIGHT CIRCUIT SHORT

.....

AIR BAG LIGHT CIRCUIT OPEN

.....

AIR BAG LIGHT CIRCUIT SHORT

.....

FUEL LEVEL SENDING UNIT FAILURE

.....

NO ABS BUS MESSAGES RECEIVED

.....

NO BCM BUS MESSAGES RECEIVED

.....

NO ORC BUS MESSAGES RECEIVED

.....

NO TCM BUS MESSAGES RECEIVED

.....

PANEL DIMMING OUTPUT SHORT

.....

PCM MESSAGE NOT RECEIVED

Interior Lighting

COURTESY LIGHT OUTPUT FAILURE

.....

DIMMING LEVEL SWITCH INPUT FAILURE

Power Door Locks\RKE System

DECKLID RELEASE SOLENOID OUTPUT FAILURE

.....

DECKLID RELEASE SWITCH FAILURE

.....

DOOR LOCK SWITCH FAILURE

.....

DRIVER DOOR CENTRAL LOCK (ARM) UNLOCK (DISARM) SWITCH FAILURE

.....

PASSENGER DOOR CENTRAL LOCK (ARM) UNLOCK (DISARM) SWITCH FAILURE

.....

RKE FOB BATTERY LOW

.....

RKE PROGRAM MODE ENTERED WITHOUT PROGRAM REQUEST

.....

RKE UNABLE TO ENTER PROGRAM MODE

Power Top

POWER TOP SWITCH OPEN OR SHORTED TO BATTERY

.....

POWER TOP SWITCH SHORTED TO GROUND

.....

POWER TOP SWITCH STUCK

Vehicle Theft/Security

DECKLID SWITCH DISARM FAILURE

Windshield Wiper/Washer

WIPER ON/OFF RELAY OUTPUT SHORTED HIGH

.....

WIPER ON/OFF RELAY OUTPUT SHORTED LOW

.....

WIPER PARK SWITCH OPEN CIRCUIT

.....

WIPER PARK SWITCH SHORTED TO GROUND

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

⁽²⁾	See SYMPTOM IDENTIFICATION table.

⁽³⁾	For air bag system diagnostic trouble codes and testing procedures, see AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.

SYMPTOM IDENTIFICATION

Affected System ⁽¹⁾

Test

Air Bag

⁽²⁾ AIR BAG INDICATOR ON WITHOUT ACM TROUBLE CODES

Audio

AM/FM SWITCH INOPERATIVE

.....

ANY STATION PRESET SWITCH INOPERATIVE

.....

BALANCE INOPERATIVE

.....

CD EJECT SWITCH INOPERATIVE

.....

EQUALIZER INOPERATIVE

.....

FADER INOPERATIVE

.....

FF/RW SWITCH INOPERATIVE

.....

HOUR/MINUTE SWITCHED INOPERATIVE

.....

PAUSE/PLAY SWITCH INOPERATIVE

.....

POWER SWITCH INOPERATIVE

.....

SCAN SWITCH INOPERATIVE

.....

SEEK SWITCH INOPERATIVE

.....

SET SWITCH INOPERATIVE

.....

TAPE EJECT SWITCH INOPERATIVE

.....

TIME SWITCH INOPERATIVE

.....

TUNE SWITCH INOPERATIVE

Chime

CHIME INOPERATIVE AT ALL TIMES

.....

CHIME INOPERATIVE WITH DRIVER'S SEAT BELT UNFASTENED

.....

CHIME INOPERATIVE WITH EXTERIOR LIGHTS ON & DRIVER'S DOOR OPEN

.....

CHIME INOPERATIVE WITH KEY-IN IGNITION & DRIVER'S DOOR OPEN

.....

CHIME SOUNDS WITH DRIVER'S SEAT BELT FASTENED

.....

CHIME SOUNDS WITH DRIVERS DOOR OPEN & KEY REMOVED FROM IGNITION

.....

VEHICLE SPEED WARNING CHIME PROBLEM

Communications

BUS +/- SIGNALS OPEN OR NO RESPONSE FROM BODY CONTROL MODULE

.....

BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT CLUSTER

.....

BUS +/- SIGNALS OPEN OR NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE

.....

BUS +/- SIGNALS OPEN OR NO RESPONSE FROM TRAVELER (CMTC)

.....

NO RESPONSE FROM CONTROLLER ANTI-LOCK BRAKE

.....

NO RESPONSE FROM LEFT SIACM

.....

NO RESPONSE FROM ORC

.....

NO RESPONSE FROM PCM (PCI BUS)

.....

NO RESPONSE FROM PCM (SCI ONLY)

.....

NO RESPONSE FROM RADIO

.....

NO RESPONSE FROM RIGHT SIACM

.....

NO RESPONSE FROM TRANSMISSION CONTROL MODULE

.....

PCI BUS COMMUNICATION FAILURE

Compass/Mini-Trip Computer

AVERAGE FUEL ECONOMY INOPERATIVE OR WRONG

.....

DISTANCE TO EMPTY INOPERATIVE OR WRONG

.....

ELAPSED TIME INOPERATIVE OR WRONG

.....

INSTANTANEOUS FUEL ECONOMY INOPERATIVE OR WRONG

.....

TRIP ODOMETER INOPERATIVE OR WRONG

.....

COMPASS/MINI-TRIP COMPUTER INOPERATIVE

.....

OUTSIDE TEMPERATURE DISPLAY INACCURATE OR INOPERATIVE

Door Ajar

DECKLID AJAR CIRCUIT OPEN

.....

DECKLID AJAR CIRCUIT SHORTED TO GROUND

.....

DRIVER'S DOOR AJAR CIRCUIT OPEN

.....

DRIVER'S DOOR AJAR CIRCUIT SHORTED TO GROUND

.....

LEFT REAR DOOR AJAR CIRCUIT OPEN

.....

LEFT REAR DOOR AJAR CIRCUIT SHORTED TO GROUND

.....

PASSENGER'S DOOR AJAR CIRCUIT OPEN

.....

PASSENGER'S DOOR AJAR CIRCUIT SHORTED TO GROUND

.....

RIGHT REAR DOOR AJAR CIRCUIT OPEN

.....

RIGHT REAR DOOR AJAR CIRCUIT SHORTED TO GROUND

Exterior Lighting

HEADLIGHT DELAY RELAY INOPERATIVE

.....

HIGH BEAM HEADLIGHTS WILL NOT TURN OFF

.....

HIGH BEAM HEADLIGHTS WILL NOT TURN ON

.....

LOW BEAM HEADLIGHTS WILL NOT TURN OFF

.....

LOW BEAM HEADLIGHTS WILL NOT TURN ON

A/C-Heater

A/C-HEATER CONTROL ILLUMINATION INOPERATIVE

.....

A/C SYSTEM TEST

.....

BLOWER MOTOR INOPERATIVE

.....

BLOWER MOTOR SPEEDS INCORRECT

Instrument Cluster

BRAKE WARNING INDICATOR ALWAYS ON

.....

BRAKE WARNING INDICATOR INOPERATIVE

.....

CHARGING SYSTEM WARNING INDICATOR NOT OPERATING PROPERLY

.....

CRUISE ENGAGED INDICATOR INOPERATIVE

.....

ENGINE COOLANT TEMPERATURE GAUGE INOPERATIVE OR INACCURATE

.....

ENGINE COOLANT TEMPERATURE INDICATOR NOT OPERATING PROPERLY

.....

FUEL GAUGE NOT OPERATING PROPERLY

.....

HIGH BEAM INDICATOR ALWAYS ON

.....

HIGH BEAM INDICATOR INOPERATIVE

.....

LOW FUEL WARNING INDICATOR NOT OPERATING PROPERLY

.....

MALFUNCTION INDICATOR LIGHT NOT OPERATING PROPERLY

.....

OIL PRESSURE INDICATOR NOT OPERATING PROPERLY

.....

PRND OR AUTOSTICK INDICATOR INACCURATE OR INOPERATIVE

.....

SEAT BELT INDICATOR ALWAYS ON

.....

SEAT BELT INDICATOR INOPERATIVE

.....

SPEEDOMETER NOT OPERATING PROPERLY

.....

TACHOMETER NOT OPERATING PROPERLY

.....

VTSS INDICATOR INOPERATIVE

Interior Lighting

COURTESY LIGHT INOPERATIVE - ALL LIGHTS

.....

I/P ILLUMINATION LIGHTS NOT WORKING PROPERLY

Power Door Locks/RKE

ALL DOORS EXCEPT DRIVER FAILING TO UNLOCK FROM ANY SWITCH

.....

ALL DOORS FAILING TO LOCK & UNLOCK FROM ANY SWITCH

.....

ALL DOORS FAILING TO LOCK & UNLOCK FROM ONE SWITCH

.....

ALL DOORS FAILING TO LOCK FROM ANY SWITCH

.....

ALL DOORS FAILING TO LOCK FROM ONE SWITCH

.....

ALL DOORS FAIL TO UNLOCK FROM ONE SWITCH

.....

AUTOMATIC (ROLLING) DOOR LOCKS INOPERATIVE

.....

DECKLID RELEASE INOPERATIVE

.....

DOOR LOCK INHIBIT CIRCUIT INOPERATIVE

.....

DRIVER DOOR FAILS TO LOCK FROM ANY SWITCH

.....

DRIVER DOOR FAILS TO UNLOCK FROM ANY SWITCH

.....

ONE DOOR FAILS TO LOCK & UNLOCK FROM ANY SWITCH

.....

REMOTE KEYLESS ENTRY PROBLEM

.....

REMOTE KEYLESS ENTRY HORN CHIRP INOPERATIVE

Power Top

FOUR WINDOW DROP INOPERATIVE

Vehicle Theft/Security

ALARM TRIPS ON ITS OWN

.....

COURTESY LIGHTS INOPERATIVE WITH ALARM TRIPPED

.....

DRIVER DOOR KEY FAILS TO ARM OR DISARM VTSS

.....

HEADLIGHTS INOPERATIVE WITH ALARM TRIPPED (IF ENABLED)

.....

HORNS FAIL TO SOUND

.....

HORNS FAILS TO SOUND WHEN ALARM IS TRIPPED (IF ENABLED)

.....

PASSENGER DOOR KEY FAILS TO ARM OR DISARM VTSS

.....

VTSS DOES NOT TRIP FROM DRIVER DOOR

.....

VTSS DOES NOT TRIP FROM LEFT REAR DOOR

.....

VTSS DOES NOT TRIP FROM PASSENGER DOOR

.....

VTSS DOES NOT TRIP FROM RIGHT REAR DOOR

.....

VTSS INDICATOR INOPERATIVE

.....

VTSS NO TRIP FROM DECKLID

.....

VTSS WILL NOT ARM

⁽¹⁾	Perform appropriate test under SYSTEM TESTS.

⁽²⁾	For air bag system diagnostic trouble codes and testing procedures, see AIR BAG RESTRAINT SYSTEMS article in RESTRAINTS.