Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnosis Procedure (With LH and RH Anti-Pinch)
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - SEDAN WITH INTELLIGENT KEY SYSTEMΒ ".
- CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
- Turn ignition switch ON.
- Check voltage between main power window and door lock/unlock switch connector and ground.
Terminals Key position Voltage (V) (Approx.) (+) (-) Main power window and door lock/unlock switch connector Terminal D7 4 Ground Lock 0 Neutral / Unlock 5 6 Unlock 0 Neutral / Lock 5 Is the inspection result normal?Β
YES: Replace main power window and door lock/unlock switch. Refer to "REMOVAL AND INSTALLATION ".
NO: GO TO 2
- CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect main power window and door lock/unlock switch connector and front door lock assembly LH (key cylinder switch) connector.
- Check continuity between main power window and door lock/unlock switch connector and front door lock assembly LH (key cylinder switch) connector.
Main power window and door lock/unlock switch connector Terminal Front door lock assembly LH (key cylinder switch) connector Terminal Continuity A: D7 4 B: D10 6 Yes 6 5 - Check continuity between main power window and door lock/unlock switch connector and ground.
Power window main switch connector Terminal Ground Continuity A: D7 4 No 6 Is the inspection result normal?Β
YES: GO TO 3
NO: Repair or replace harness.
- CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between front door lock assembly LH connector and ground.
Front door lock assembly LH connector Terminal Ground Continuity D10 4 Yes Is the inspection result normal?Β
YES: GO TO 4
NO: Repair or replace harness.
- CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to "COMPONENT INSPECTIONΒ ".
Is the inspection result normal?Β
YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
NO: Replace front door lock assembly LH (key cylinder switch). Refer to "FRONT DOOR LOCK: REMOVAL AND INSTALLATION ".
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.