No. 1 One Or More On-Board Diagnostic Functions Inoperative [Keyless Entry System]

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.

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

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

NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM] 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.
1		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.
2		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.
3		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 21 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.
*4		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.
5		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.
6		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.
*7		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.
8		No	Reinspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.