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NO. 2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE

id0903d2632200
• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harnesses are connected correctly and undamaged.

2 | All on-board diagnostic functions inoperative
DESCRIPTION | • Malfunction in door lock timer unit power supply circuit, door switch circuit, cargo compartment light circuit or door lock timer unit ground circuit.
POSSIBLE CAUSE | • Malfunction in IG1, B+ signal circuit of door lock timer unit - Door lock timer unit power supply fuse malfunction - Malfunction in wiring harness between door lock timer unit power supply fuse (s) and door lock timer unit itself • Malfunction in door lock timer unit's door open/closed signal circuit - Door switch system malfunction - Door lock timer unit malfunction - Malfunction in wiring harness between door lock timer unit and door switch • Malfunction in door lock timer unit's liftgate or trunk lid open/closed signal circuit - Cargo compartment light switch system malfunction - Door lock timer unit malfunction - Malfunction in wiring harness between door lock timer unit and cargo compartment light switch • Malfunction in door lock timer unit GND signal circuit - Malfunction in wiring harness between door lock timer unit and ground

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT DOOR LOCK TIMER UNIT POWER SUPPLY FUSES • Are door lock timer unit power supply fuses okay? | Yes | Go to the next step.
No | Check for a short to ground on blown fuse's circuit. Repair or replace as necessary. Install appropriate amperage fuse.
2 | INSPECT DOOR SWITCH INSTALLATION • Are door switches installed securely? | Yes | Go to the next step.
No | Install door switch (es) securely, then go back to Step 5 of keyless entry system preliminary inspection.
*3 | CHECK TO SEE WHETHER MALFUNCTION IS IN WIRING HARNESS (LACK OF CONTINUITY BETWEEN FUSE BLOCK AND DOOR LOCK TIMER UNIT) OR ELSEWHERE • Turn ignition switch to ON position. • Measure voltage at following door lock timer unit terminals: - IG1 signal (Terminal B (24 pin)) - B+ signal (Terminal A (24 pin)) • Is voltage B+? | Yes | Go to the next step.
No | Repair wiring harness between fuse block and door lock timer unit, then go to Step 8.
*4 | CHECK TO SEE WHETHER MALFUNCTION IS IN WIRING HARNESS (SHORT TO B+ BETWEEN FUSE BLOCK AND DOOR LOCK TIMER UNIT, OR BETWEEN DOOR LOCK TIMER UNIT AND GROUND) OR ELSEWHERE • Turn ignition switch to LOCK position. • Disconnect door lock timer unit connector. • Measure voltage at following door lock timer unit connector terminals: - IG1 signal (Terminal B (24 pin)) • Is voltage B+? | Yes | Repair malfunctioning wiring harness, then go to Step 8.
No | Go to the next step.
*5 | CHECK TO SEE WHETHER MALFUNCTION IS IN WIRING HARNESS (LACK OF CONTINUITY BETWEEN DOOR LOCK TIMER UNIT AND GROUND) OR ELSEWHERE • Is there continuity between door lock timer unit connector terminal W (24 pin) and ground? | Yes | Go to the next step.
No | Repair wiring harness between door lock timer unit and ground, then go to Step 8.
6 | INSPECT FOR CHECK CODE 04 IN INSTRUMENT CLUSTER • Inspect door switch using instrument cluster input/output check mode. (See INSTRUMENT CLUSTER INPUT/OUTPUT CHECK MODE.) • Does DTC 04 function properly? | Yes | Go to the next step.
No | Repair door switch system using DTC 04 inspection procedure, then go to Step 8.
7 | INSPECT DOOR LOCK TIMER UNIT OR WIRING HARNESS (BETWEEN DOOR LOCK TIMER UNIT AND DOOR SWITCHES, CARGO COMPARTMENT LIGHT SWITCH FOR CONTINUITY) • Open the driver-side door. • Is there continuity between door lock timer unit connector terminal K, G (24 pin) and ground? | Yes | Replace door lock timer unit and reprogram door lock timer unit ID code, then go to the next step.
No | Repair wiring harness between door lock timer unit and door switch (es), cargo compartment light switch then go to the next step.
8 | RECHECK MALFUNCTION SYMPTOM AFTER REPAIR • Does keyless entry system operate properly? | Yes | Troubleshooting completed. Explain repairs to customer.
No | Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.