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.
Diagnostic Procedure
- STEP 1. Check power window main switch connector E-19, front power window motor (LH) connector E-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are power window main switch connector E-19, front power window motor (LH) connector E-16 in good condition?
YES: Go to Step 2.
NO: Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . Verify that the power window works normally.
- STEP 2. Check the wiring harness between power window main switch connector E-19 (terminals 9, 11 and 12) and front power window motor (LH) connector E-16 (terminals 5, 2 and 6).
Q: Is the wiring harness between power window main switch connector E-19 (terminals 9, 11 and 12) and front power window motor (LH) connector E-16 (terminals 5, 2 and 6) in good condition?
YES: Go to Step 3.
NO: The wiring harness may be damaged or the connector (s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the power window works normally.
- STEP 3. Diagnostic trouble code recheck
Replace the front power window motor (LH). Recheck if the diagnostic trouble code is set.
- Erase the diagnostic trouble code.
- Operate the driver's door window switch on the power window main switch.
- Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?
YES: Replace the power window main switch.
NO: The procedure is complete. Verify that the power window works normally.
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.