NO.1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM]
id0903d2800600
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1
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One or more on-board diagnostic functions inoperative
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DESCRIPTION
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• Malfunction in door lock linkage system
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POSSIBLE CAUSE
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• Malfunction in door lock linkage
• Malfunction in BCM door lock/unlock signal circuit
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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CHECK HORN, AND HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS
• Did all of the following items work during on-board diagnostic function operation?
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Yes
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Go to Step 5.
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No
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Go to next step.
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2
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INSPECT HAZARD WARNING LIGHT OPERATION DURING ON-BOARD DIAGNOSIS
• Did hazard warning lights flash during on-board diagnostic function operation?
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Yes
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Go to Step 5.
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No
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Go to next step.
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3
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INSPECT HAZARD WARNING LIGHT CIRCUIT
• Do hazard warning lights flash when hazard warning switch is on?
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Yes
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Go to next step.
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No
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Inspect hazard switch and related circuit, then go to the next step.
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*4
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INSPECT IF MALFUNCTION IS IN WIRING HARNESS (BETWEEN BCM AND TURN LIGHTS) OR BCM
• Measure the voltage at BCM terminals 1M and 1O (16-pin connector), and 5O and 5R (30-pin connector) during on-board diagnostic function operation.
• Are the voltage as above?
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Yes
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction reoccurs.
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No
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• Inspect wiring harness between BCM and turn lights.
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5
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VERIFY THAT ALL DOORS LOCK AND UNLOCK DURING ON-BOARD DIAGNOSIS
• Do all doors unlock and lock during on-board diagnostic function operation?
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Yes
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Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
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No
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Go to the next step.
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6
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INSPECT DOOR LOCK LINKAGE
• Operate the door lock knob and verify the door locks and unlocks manually.
• Does every door lock system work?
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Yes
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Go to the next step.
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No
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Inspect the door lock linkage.
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*7
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INSPECT IF MALFUNCTION IS IN DOOR LOCK ACTUATOR, BCM GROUND CIRCUIT OR ELSEWHERE
• Measure the voltage at BCM terminals 6A, 6C and 6E.
• Is the voltage as above?
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Yes
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Reinspect the malfunction symptoms, then repeat from Step 1 if the malfunction recurs.
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No
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• Inspect the BCM connector.
• Inspect the wiring harness between the BCM and door lock actuator.
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8
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REINSPECT MALFUNCTION SYMPTOM AFTER REPAIR
• Does the keyless entry system operate properly?
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Yes
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• Troubleshooting completed.
• Explain repairs to the customer.
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No
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Reinspect the malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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