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.
REAR POWER WINDOW SWITCH: Diagnosis Procedure
- CHECK REAR POWER WINDOW SWITCH POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect rear power window switch connector.
- Turn ignition switch ON.
- Check voltage between rear power window switch harness connector and ground.
(+) (-) Voltage (V) Rear power window switch Connector Terminal LH D63 1 Ground 9 - 16 RH D43 Is the inspection result normal?
YES: INSPECTION END
NO: GO TO 2.
- CHECK REAR POWER WINDOW SWITCH POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector.
- Check continuity between BCM harness connector and rear power window switch harness connector.
BCM Rear power window switch Continuity Connector Terminal Connector Terminal M69 (M66) 68 (67) LH D63 1 Existed RH D43 - Check continuity between BCM harness connector and ground.
BCM Ground Continuity Connector Terminal M69 (M66) 68 (67) Not existed (): Without Intelligent Key Is the inspection result normal?
YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION " (with Intelligent Key) or "REMOVAL AND INSTALLATION " (without Intelligent Key).
NO: Repair or replace harness.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.