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STEP
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INSPECTION
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ACTION
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1
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INSPECT 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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- Horns sounded intermittently (Australian specs.)
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- Hazard lights flashed
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Yes
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Go to Step 7.
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No
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(Australian specs.)
Go to next step.
(Except Australian specs.)
Go to step 6.
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2
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INSPECT HORN OPERATION DURING ON-BOARD DIAGNOSIS
• Did horns sound intermittently during on-board diagnostic function operation?
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Yes
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Go to step 7.
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No
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Go to next step.
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3
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INSPECT HORN CIRCUIT
• Do horns sound when depressing horn switch on vehicle?
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Yes
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Go to step 6.
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No
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Inspect horn circuit.
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4
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INSPECT WIRING HARNESS BETWEEN KEYLESS UNIT AND HORN RELAY FOR CONTINUITY
• Turn ignition switch LOCK position.
• Disconnect keyless unit connector (16-pin) or short cord connector (12-pin) and horn relay connector.
• Is there continuity between keyless unit connector terminal E or short cord connector terminal E and horn relay connector?
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Yes
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Replace keyless unit and reprogram keyless unit ID cord, then go to step 11.
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No
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Repair wiring harness between keyless unit and horn relay, then go to step 11.
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5
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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 warning light circuit.
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*6
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CHECK TO SEE WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN KEYLESS UNIT AND FLASHER UNIT) OR KEYLESS UNIT
• Measure voltage at keyless unit connector terminal H or short cord connector terminal D during on-board diagnostic function operation.
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- When hazard warning light flashes: Alternates between B+ and below 1.0 V
• Is voltage as above?
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Yes
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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No
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• Inspect wiring harness between keyless unit and flasher unit.
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- If wiring harness is OK, replace keyless unit and reprogram transmitter ID code, then go to Step 11.
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- If there is wiring harness malfunction, repair wiring harness, then go to Step 11.
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7
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MAKE SURE THAT ALL DOORS LOCK AND UNLOCK DURING ON-BOARD DIAGNOSIS
• Did all doors unlock and lock during on-board diagnostic function operation?
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Yes
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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No
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Go to next step.
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8
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INSPECT DOOR LOCK LINKAGE
• Operate inner door lock knob and make sure door locks and unlocks manually.
• Does every door lock system work?
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Yes
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Go to next step.
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No
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Inspect door lock linkage.
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*9
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CHECK TO SEE WHETHER MALFUNCTION IS IN DOOR LOCK ACTUATOR, DOOR LOCK TIMER UNIT GROUND CIRCUIT OR ELSEWHERE
• Measure voltage at keyless unit connector terminal O or short cord connector terminal F during on-board diagnostic function operation.
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- With double locking system or theft-deterrent system
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• All door locked: 5→2.5→5 V
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• All door unlocked: 5→below 1.0 V→5 V
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- Other
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• All door locked: B+→6 V→B+
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• All door unlocked: B+→below 1.0 V→B+
• Is voltage as above?
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Yes
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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No
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• Inspect door lock timer unit connector.
• Inspect wiring harness between keyless unit and door lock timer unit.
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- If above parts are OK, go to next step.
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- If above parts malfunction, repair malfunctioning part.
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*10
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CHECK TO SEE WHETHER MALFUNCTION IS IN KEYLESS UNIT OR DOOR LOCK TIMER UNIT
• Measure voltage at door lock timer unit connector terminal F.
• Is voltage as follows?
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- With double locking system or theft-deterrent system: 5 V
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- Other: B+
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Yes
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Replace keyless unit and reprogram transmitter ID code, then go to next step.
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No
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Replace door lock timer unit, then go to next step.
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11
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RECHECK MALFUNCTION SYMPTOM AFTER REPAIR
• Does keyless entry system operate properly?
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Yes
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Troubleshooting completed.
Explain repairs to customer.
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No
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Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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