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
- CHECK POWER SUPPLY CIRCUIT
Is the measurement value within the specification?
YES>>
GO TO 2 (Rear power window switch LH).
YES>>
GO TO 3 (Rear power window switch RH).
NO>>
GO TO 4.
- CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH LH)
-
- Ignition switch OFF.
- Disconnect main power window and door lock/unlock switch connector and rear power window switch LH connector.
- Check continuity between main power window and door lock/unlock switch harness connector and rear power window switch LH harness connector.
Main power window and door lock/unlock switch Rear power window switch LH Continuity Connector Terminal Connector Terminal D66 9 D253 4 Yes 8 5 - Check continuity between main power window and door lock/unlock switch harness connector and ground.
Main power window and door lock/unlock switch - Continuity Connector Terminal D66 8 Ground No 9
Is the inspection result normal?
YES>>
GO TO 5.
NO>>
Repair or replace harness.
-
- CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH RH)
-
- Ignition switch OFF.
- Disconnect main power window and door lock/unlock switch connector and rear power window switch RH connector.
- Check continuity between main power window and door lock/unlock switch harness connector and rear power window switch RH harness connector.
Main power window and door lock/unlock switch Rear power window switch RH Continuity Connector Terminal Connector Terminal D66 7 D355 4 Yes 6 5 - Check continuity between main power window and door lock/unlock switch harness connector and ground.
Main power window and door lock/unlock switch - Continuity Connector Terminal D66 6 Ground No 7
Is the inspection result normal?
YES>>
GO TO 5.
NO>>
Repair or replace harness.
-
- CHECK HARNESS CONTINUITY
-
- Disconnect BCM and rear power window switch connector.
- Check continuity between BCM harness connector and rear power window switch harness connector.
BCM Rear power window switch Continuity Connector Terminal Connector Terminal M81 140 LH D253 8 Yes RH D355 - Check continuity between BCM harness connector and ground.
BCM - Continuity Connector Terminal M81 140 Ground No
Is the inspection result normal?
YES>>
Replace BCM. Refer to Removal and Installation .
NO>>
Repair or replace harness.
-
- CHECK REAR POWER WINDOW SWITCH
- Check rear power window switch. Refer to Component Function Check .
Is the inspection result normal?
YES>>
Check intermittent incident. Refer to Intermittent Incident .
NO>>
Replace rear power window switch. Refer to 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:
- • 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.