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Self-Diagnostic System

NOTE: Self-diagnostic tests are written specifically for Chrysler's Diagnostic Readout Box (DRBIII(R)) scan tool. A generic scan tool may not be capable of performing all necessary test functions.
  1. Perform pretest inspection. See PRETEST INSPECTION  under TROUBLE SHOOTING. If pretest inspection procedure has been performed, go to next step.
  2. 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.
  3. NOTE: Scan tool messages are listed by system affected and not by module retrieved from.
  4. Using scan tool, retrieve Diagnostic Trouble Codes (DTC) from all modules. Do not clear DTCs until repairs are complete. If any DTCs exist, perform corresponding DTC test(s) under affected system under SYSTEM TESTS. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION  table. If no DTCs exist, repair by corresponding symptom test(s) under affected system under SYSTEM TESTS  . See SYMPTOM IDENTIFICATION  table.
DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Affected System (1) DTC
Air Bag (2)
Instrument Cluster ABS MESSAGE NOT RECEIVED BY MIC 
ORC MESSAGE NOT RECEIVED BY MIC 
FUEL LEVEL SENSOR OPEN 
FUEL LEVEL SENSOR SHORT 
PANEL DIMMER OPEN 
SBEC MESSAGES NOT RECEIVED BY MIC 
SKIM MESSAGE NOT RECEIVED BY MIC 
Vehicle Theft Security System (VTSS) HOOD AJAR SWITCH MISSING 
VTSS PREVIOUSLY ENABLED 
(1) Perform corresponding test(s) under affected system under SYSTEM TESTS  .
(2) For air bag system diagnostic trouble codes and testing procedures, see lemon-25(R) AIR BAG SERVICE & REPAIR, DOMESTIC & IMPORTED manual.
SYMPTOM IDENTIFICATION

Affected System (1) Test
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 ORC 
NO RESPONSE FROM CAB 
NO RESPONSE FROM LEFT SIACM 
NO RESPONSE FROM PCI BUS (PCI BUS) 
NO RESPONSE FROM PCM (SCI ONLY) 
NO RESPONSE FROM RADIO 
NO RESPONSE FROM RIGHT SIACM 
COMPLETE PCI BUS FAILURE 
Exterior Lighting HIGH BEAM HEADLIGHTS WILL NOT TURN ON 
HIGH BEAM HEADLIGHTS WILL NOT TURN OFF 
LOW BEAM HEADLIGHTS WILL NOT TURN OFF 
LOW BEAM HEADLIGHTS WILL NOT TURN ON 
Instrument Cluster ALL GAUGES INOPERATIVE 
ANY PCI BUS INDICATOR INOPERATIVE 
RED BRAKE WARNING INDICATOR ALWAYS ON 
RED BRAKE WARNING INDICATOR INOPERATIVE 
FOG LIGHT INDICATOR INOPERATIVE 
FUEL GAUGE INACCURATE 
HIGH BEAM INDICATOR INOPERATIVE 
CLUSTER ILLUMINATION INOPERATIVE 
ONE GAUGE INOPERATIVE 
SEAT BELT INDICATOR NOT OPERATING PROPERLY 
VF DISPLAY INOPERATIVE 
Interior Lighting ALL COURTESY LIGHTS INOPERATIVE 
COURTESY LIGHTS ON AT ALL TIMES 
ILLUMINATED ENTRY INOPERATIVE 
Power Door Locks/Remote Keyless Entry ALL DOOR LOCKS INOPERATIVE 
ALL DOORS (EXCEPT DRIVER) FAIL TO LOCK & UNLOCK 
ALL DOORS (EXCEPT DRIVER) FAIL TO UNLOCK 
ALL DOORS FAIL TO LOCK 
ALL LOCKS INOPERATIVE FROM A DOOR LOCK SWITCH 
AUTOMATIC DOOR LOCK INOPERATIVE 
DECK LID SOLENOID INOPERATIVE 
DOORS LOCKABLE WITH KEY IN IGNITION & DRIVER DOOR OPEN 
DRIVER DOOR FAILS TO LOCK & UNLOCK 
DRIVER DOOR FAILS TO UNLOCK 
ONE PASSENGER DOOR FAILS TO LOCK & UNLOCK 
RKE TRANSMITTER INOPERATIVE 
Vehicle Theft Security System (VTSS) HEAD LIGHTS FAIL TO FLASH DURING ALARM 
HORN FAILS TO SOUND DURING ALARM 
OPEN DRIVER DOOR FAILS TO TRIP ALARM 
OPEN PASSENGER DOOR FAILS TO TRIP ALARM 
PARKING LIGHTS FAIL TO FLASH DURING ALARM 
VTSS FAILS TO ARM/DISARM FROM DRIVER CYLINDER LOCK SWITCH 
VTSS FAILS TO ARM/DISARM FROM PASSENGER DOOR CYLINDER LOCK SWITCH 
VTSS INDICATOR FAILS TO FLASH 
VTSS INDICATOR STAYS ON STEADY DURING ARMING 
(1) Perform corresponding test(s) under affected system under SYSTEM TESTS  .