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 And Testing - Power Window Switch: Notes
Any diagnosis of the power window system should begin with the use of the DRB III(R) diagnostic tool. For information on the use of the DRB III(R), refer to ELECTRONIC CONTROL MODULES .
The diagnosis found here applies only to the rear door power window switches. If the problem being diagnosed is an inoperative power window switch illumination lamp, but the power window switch operates as designed, replace the faulty rear door power window switch (verify the power lockout switch is not actuated).
For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS .
- Disconnect and isolate the battery negative cable.
- Remove the power window switch from the rear door trim panel (Refer to REMOVAL ).
- Check the rear door power window switch continuity. See POWER WINDOW SWITCH TEST (Refer to Fig 1 ). If OK, (Refer to DIAGNOSIS AND TESTING - POWER WINDOWS ).
Use the Manual With the Right Hardware
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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.