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NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE

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• 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.

1 | One or more on-board diagnostic functions inoperative
DESCRIPTION | • Malfunction in hazard warning light system, or door lock linkage system, driver's door key cylinder switch system.
POSSIBLE CAUSE | • Malfunction in hazard warning light system - Hazard warning light circuit - Door lock timer unit malfunction - Malfunction in wiring harness between door lock timer unit and flasher control module • Malfunction in door lock linkage • Malfunction in door lock timer unit door lock/unlock signal circuit - Door lock timer unit malfunction

## Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS • Did hazard warning lights flash during on-board diagnostic function operation? | Yes | Go to Step 4.
No | Go to the next step.
2 | INSPECT HAZARD WARNING LIGHT CIRCUIT • Do hazard warning lights flash when hazard warning switch is on? | Yes | Go to the next step.
No | Inspect hazard warning light circuit.
*3 | CHECK TO SEE WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN DOOR LOCK TIMER UNIT AND FLASHER CONTROL MODULE) OR DOOR LOCK TIMER UNIT • Measure voltage at door lock timer unit connector terminal I (24 pin) during on-board diagnostic function operation. - When hazard warning light flashed: B+⇔below 1.0 V • Is voltage as above? | Yes | Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.
No | • Inspect wiring harness between door lock timer unit and flasher control module. - If wiring harness is OK, replace door lock timer unit and reprogram transmitter ID code, then go to Step 7. - If wiring harness malfunction, repair wiring harness, then go to Step 7.
4 | MAKE SURE THAT ALL DOORS LOCK AND UNLOCK DURING ON-BOARD DIAGNOSIS • Did all doors unlock and lock during on-board diagnostic function operation? | Yes | Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.
No | Go to the next step.
5 | INSPECT DOOR LOCK LINKAGE • Operate door lock knob and make sure door locks and unlocks manually. • Does every door lock system work? | Yes | Go to the next step.
No | Inspect door lock linkage.
*6 | CHECK TO SEE WHETHER MALFUNCTION IS IN DOOR LOCK ACTUATOR, DOOR LOCK TIMER UNIT GROUND CIRCUIT OR ELSEWHERE • Measure voltage at door lock timer unit connector terminal C, D (6 pin) during on-board diagnostic function operation. - All door locked: below 1.0 V→B+→below 1.0 V (terminal D, 6 pin) - All door unlocked: B+→below 1.0 V→B+ (terminal C, 6 pin) • Is voltage as above? | Yes | Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.
No | • Inspect door lock timer unit connector. • Inspect wiring harness between door lock timer unit and door lock actuator. - If above parts are OK, go to the next step. - If above parts malfunction, repair malfunction part.
7 | 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.