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

id0903d2800600

1	One or more on-board diagnostic functions inoperative
DESCRIPTION	•  Malfunction in trunk lid opener system, hazard warning light system, or door lock linkage system
POSSIBLE CAUSE	•  Malfunction in trunk lid opener system ―  Trunk lid opener relay circuit malfunction ―  keyless control module malfunction •  Malfunction in hazard warning light system ―  Hazard warning light circuit ―  Keyless control module malfunction ―  Malfunction in wiring harness between keyless control module and hazard warning lights ―  Malfunction in wiring harness between keyless control module and flasher unit •  Malfunction in door lock linkage •  Malfunction in keyless control module door lock/unlock signal circuit ―  keyless control module malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT HAZARD WARNING LIGHT AND TRUNK LID OPENER OPERATION DURING ON-BOARD DIAGNOSIS •  Do all of the following items work during on-board diagnostic function operation? ―  Hazard warning lights flash. ―  Trunk lid opens.	Yes	Go to Step 8.
		No	Go to the next step.
2	INSPECT HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS •  Do the hazard warning lights flash during on-board diagnostic function operation?	Yes	Go to Step 5.
		No	Go to the next step.
3	INSPECT HAZARD WARNING LIGHT CIRCUIT •  Do the hazard warning lights flash when hazard warning switch is on?	Yes	Go to the next step.
		No	Inspect the hazard warning light circuit.
*4	INSPECT IF MALFUNCTION IS IN WIRING HARNESS (BETWEEN KEYLESS CONTROL MODULE AND FLASHER UNIT) OR KEYLESS CONTROL MODULE •  Measure the voltage at keyless control module connector terminal 2I during on-board diagnostic function operation. ―  When hazard warning lights flashed: Alternates between B+ and below 1.0 V •  Is the voltage as above?	Yes	Reinspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.
		No	•  Inspect the wiring harness between the keyless control module and flasher unit. ―  If the wiring harness is normal, replace the keyless control module and reprogram the transmitter ID code, then go to Step 11. ―  If the wiring harness is malfunctioning, repair the wiring harness, then go to Step 11.
5	CHECK TRUNK LID OPERATION DURING ON-BOARD DIAGNOSIS •  Does the trunk lid open during on-board diagnostic function operation?	Yes	Go to Step 8.
		No	Go to the next step.
6	INSPECT TRUNK LID OPENER SYSTEM •  Does the trunk lid open by the trunk lid opener switch?	Yes	Go to the next step.
		No	Inspect the trunk lid opener system.
*7	INSPECT IF MALFUNCTION IS IN TRUNK LID OPENER RELAY CIRCUIT OR KEYLESS CONTROL MODULE •  Disconnect the keyless control module connector. •  Measure the voltage at keyless control module connector terminal 2E. •  Is the voltage approx. 12 V?	Yes	Replace the keyless control module and the reprogram transmitter ID code, then go to Step 11.
		No	Inspect the trunk lid opener relay circuit.
8	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.
9	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.
*10	INSPECT IF MALFUNCTION IS IN DOOR LOCK ACTUATOR, KEYLESS CONTROL MODULE GROUND CIRCUIT OR ELSEWHERE •  Measure the voltage at keyless control module connector terminals 1C and 1D. ―  All doors locked: Cycles 1.0 V or less →B+→1.0 V or less (terminal 1D) ―  All doors unlocked: Cycles B+→1.0 V or less→B+ (terminal 1C) •  Is the voltage as above?	Yes	Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
		No	•  Inspect the keyless control module the connector. •  Inspect the wiring harness between the keyless control module 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.
11	REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR •  Does the keyless entry system operate properly?	Yes	Troubleshooting completed. Explain repairs to customer.
		No	Reinspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.