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NO.1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM]

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

1 | One or more on-board diagnostic functions inoperative
DESCRIPTION | • Malfunction in door lock linkage system
POSSIBLE CAUSE | • Malfunction in door lock linkage • Malfunction in BCM door lock/unlock signal circuit - BCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | CHECK HORN, AND HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS • Did all of the following items work during on-board diagnostic function operation? - Hazard warning lights flashed | Yes | Go to Step 5.
No | Go to next step.
2 | INSPECT HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS • Did hazard warning lights flash during on-board diagnostic function operation? | Yes | Go to Step 5.
No | Go to next step.
3 | INSPECT HAZARD WARNING LIGHT CIRCUIT • Do hazard warning lights flash when hazard warning switch is on? | Yes | Go to next step.
No | Inspect hazard warning light circuit.
*4 | INSPECT IF MALFUNCTION IS IN WIRING HARNESS (BETWEEN BCM AND TURN LIGHTS) OR BCM • Measure the voltage at BCM terminals 3B and 3D (12-pin connector), and 2I and 2K (16-pin connector), and 8H and 8J (16-pin connector) during on-board diagnostic function operation. - When hazard warning light flashed: Alternates between B+ and below 1.0 V • Are the voltage as above? | Yes | Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.
No | • Inspect wiring harness between BCM and turn lights. - If wiring harness is normal, replace the BCM, then go to Step 8. - If wiring harness malfunction, repair wiring harness, then go to Step 8.
5 | VERIFY THAT ALL DOORS LOCK AND UNLOCK DURING ON-BOARD DIAGNOSIS • Do all doors unlock and lock during on-board diagnostic function operation? | Yes | Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
No | Go to the next step.
6 | INSPECT DOOR LOCK LINKAGE • Operate the door lock knob and verify the door locks and unlocks manually. • Does every door lock system work? | Yes | Go to the next step.
No | Inspect the door lock linkage.
*7 | INSPECT IF MALFUNCTION IS IN DOOR LOCK ACTUATOR, BCM GROUND CIRCUIT OR ELSEWHERE • Measure the voltage at BCM terminals 6A, 6B and 6F. - All doors locked: 1.0 V or less → B+ → 1.0 V or less (Normal lock: 6A terminal) (Double lock: 6G terminal) - Driver-side door unlocked: 1.0 V or less → B+ → 1.0 V or less (Normal unlock: 6B terminal) • Is the voltage as above? | Yes | Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
No | • Inspect the BCM connector. • Inspect the wiring harness between the BCM and door lock actuator. - If the above parts are normal, go to the next step. - If any of above parts are malfunctioning, repair the malfunctioning part.
8 | REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR • Does the keyless entry system operate properly? | Yes | • Troubleshooting completed. • Explain repairs to the customer.
No | Reinspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.