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Self-Diagnostic System

NOTE: Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box (DRBIII) scan tool. A generic scan tool may not be capable of performing all necessary test functions.

Perform pretest inspection. See PRETEST INSPECTION in TROUBLE SHOOTING. If pretest inspection procedure has been performed, go to next step.
Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. See Figure. Turn ignition on. Using scan tool, attempt to communicate with all modules. If communication is established with all modules, go to next step. If communication is not established with any module, perform appropriate test under COMMUNICATIONS under SYSTEM TESTS.

NOTE: Scan tool messages are listed by system affected, not by reporting module. 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 corresponding DTC test(s) in affected system in SYSTEM TESTS . See SYMPTOM INDEX table. If no DTCs exist, repair by corresponding symptom test(s) in affected system in SYSTEM TESTS . See SYMPTOM INDEX table.

SYMPTOM INDEX

Affected System

⁽¹⁾ Test

Air Bag

⁽²⁾

Communications

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

.....

BUS +/- SIGNALS OPEN OR NO RESPONSE FROM RKE

.....

BUS +/- SIGNAL OPEN OR NO RESPONSE FROM SKIM

.....

NO RESPONSE FROM ACM

.....

NO RESPONSE FROM CAB

.....

NO RESPONSE FROM ECM (PCI BUS) DIESEL ONLY

.....

NO RESPONSE FROM (SCI ONLY) DIESEL ONLY

.....

CHECKING PCM POWER & GROUND CIRCUITS

.....

NO RESPONSE FROM LEFT SIACM

.....

NO RESPONSE FROM PCM (PCI BUS)

.....

NO RESPONSE FROM PCM (SCI ONLY)

.....

NO RESPONSE FROM RADIO

.....

NO RESPONSE FROM RIGHT SIACM

.....

NO RESPONSE FROM TCM

.....

PCI BUS COMMUNICATION FAILURE

INSTRUMENT CLUSTER

ABS INDICATOR CIRCUIT OPEN

.....

ABS MESSAGE NOT RECEIVED

.....

EATX MESSAGE MISMATCH

.....

EEPROM CHECK SUM FAILURE

.....

FUEL LEVEL SENSOR OPEN

.....

FUEL LEVEL SENSOR SHORT

.....

FUEL LEVEL SENSOR STUCK

.....

PANEL DIMMER OPEN

.....

PANEL DIMMER SHORTED

.....

ALL GAUGES INOPERATIVE

.....

ANY PCI BUS INDICATOR INOPERATIVE

.....

BRAKE WARNING INDICATOR ALWAYS ON

.....

BRAKE WARNING INDICATOR INOPERATIVE

.....

FRONT FOG LAMP INDICATOR INOPERATIVE

.....

FUEL GAUGE INACCURATE

.....

HIGH BEAM INDICATOR INOPERATIVE

.....

INSTRUMENT CLUSTER DIMMING INOPERATIVE

.....

LOW OIL PRESSURE INDICATOR ALWAYS ON

.....

LOW OIL PRESSURE INDICATOR INOPERATIVE

.....

ONE GAUGE INOPERATIVE

.....

PRND OR AUTOSTICK DISPLAY INOPERATIVE OR INACCURATE

.....

REAR FOG LAMP INDICATOR INOPERATIVE (BUX ONLY)

.....

REAR FOG LAMP INDICATOR INOPERATIVE (BUX ONLY)

.....

SEAT BELT INDICATOR NOT OPERATING PROPERLY

.....

VF DISPLAY INOPERATIVE

Interior Lighting

COURTESY LAMPS INOPERATIVE (ALL LAMPS)

.....

COURTESY LAMPS ON AT ALL TIMES

.....

ILLUMINATED ENTRY INOPERATIVE

Overhead Console

COMPASS/TEMP MODULE DOES NOT CALIBRATe

.....

COMPASS/TEMP MODULE INOPERATIVE

.....

COMPASS/TEMP MODULE VF SEGMENT INOPERATIVE

.....

TEMPERATURE DISPLAY INOPERATIVE OR WRONG

Power Door Locks/RKE

BODY STYLE MISMATCH

.....

INCORRECT MODULE TYPE CONFIGURATION FOR PART NUMBER

.....

LEFT DOOR SWITCH SHORTED OR STUCK

.....

MODULE NOT CONFIGURED FOR RKE

.....

NO AIRBAG MESSAGES RECEIVED

.....

NO PCM MESSAGES RECEIVED

.....

NO SKIM MESSAGES RECEIVED

.....

RIGHT DOOR OR LIFTGATE SWITCH SHORTED OR STUCK

.....

ALL DOORS (EXCEPT DRIVER) FAIL TO LOCK

.....

ALL DOORS (EXCEPT DRIVER) FAIL TO LOCK & UNLOCK

.....

ALL DOORS (EXCEPT DRIVER) FAIL TO UNLOCK

.....

ALL DOOR LOCKS INOPERATIVE

.....

ALL DOORS FAIL TO LOCK

.....

ALL DOORS FAIL TO UNLOCK

.....

ALL LOCKS INOPERATIVE FROM ONE LOCK SWITCH

.....

DOORS LOCKABLE WITH KEY IN IGNITION & DRIVER DOOR OPEN

.....

DRIVER DOOR FAILS TO LOCK

.....

DRIVER DOOR FAILS TO LOCK & UNLOCK

.....

DRIVER DOOR FAILS TO UNLOCK

.....

LIFTGATE LOCK MOTOR TO LOCK OR UNLOCK

.....

ONE PASSENGER DOOR FAILS TO LOCK & UNLOCK

.....

RKE INOPERATIVE

Vehicle Theft Security System (VTSS)

HOOD AJAR SWITCH MISSING (EXPORT ONLY)

.....

MODULE PREVIOUSLY CONFIGURED FOR VTSS

.....

HEADLAMPS FAIL TO FLASH DURING ALARM

.....

HORN FAILS TO SOUND DURING ALARM

.....

INTRUSION SENSOR CANNOT BE DISABLED (EXPORT ONLY)

.....

INTRUSION SENSOR FAILS TO TRIP VTSS (EXPORT ONLY)

.....

INTRUSION SENSOR REPEATEDLY TRIGGERS VTSS (EXPORT ONLY)

.....

OPEN DRIVER DOOR FAILS TO TRIP ALARM

.....

OPEN LIFTGATE FAILS TO TRIP ALARM

.....

OPEN PASSENGER DOOR FAILS TO TRIP ALARM

.....

PARK LAMPS FAIL TO FLASH DURING ALARM

.....

VTSS FAILS TO ARM FROM LEFT DOOR CYLINDER LOCK SWITCH (EXPORT ONLY)

.....

VTSS FAILS TO ARM/DISARM FROM LEFT DOOR CYLINDER LOCK SWITCH

.....

VTSS FAILS TO ARM FROM LIFTGATE CYLINDER LOCK SWITCH (EXPORT ONLY)

.....

VTSS INDICATOR FAILS TO FLASH

.....

VTSS INDICATOR STAYS ON STEADY DURING ARMING

.....

VTSS SIREN INOPERATIVE (EXPORT ONLY)

⁽¹⁾	Perform corresponding test(s) in affected system in SYSTEM TESTS .

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