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.
Problem Symptoms Table
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
POWER WINDOW CONTROL SYSTEM (FOR EXCEPT BACK DOOR)
| Symptom | Suspected Area |
|---|---|
| AUTO UP/DOWN function does not operate | 1. Power window regulator motor assembly LH (Driver side) |
| 2. Wire harness | |
| 3. Power window regulator master switch assembly | |
| Remote UP/DOWN function does not operate | 1. Power window regulator motor assembly LH (Driver side) |
| 2. Wire harness | |
| 3. Power window regulator master switch assembly | |
| Manual UP/DOWN function does not operate on driver side | 1. Power window regulator master switch assembly |
| 2. Power window regulator motor assembly LH (Driver side) | |
| 3. Wire harness | |
| Manual UP/DOWN function does not operate on passenger side | 1. Power window regulator switch assembly (Passenger side) |
| 2. Power window regulator motor assembly RH (Passenger side) | |
| 3. Wire harness | |
| Manual UP/DOWN function does not operate on rear LH | 1. Power window regulator switch assembly rear (Rear LH) |
| 2. Power window regulator motor assembly RH (Rear LH) | |
| 3. Wire harness | |
| Manual UP/DOWN function does not operate on rear RH | 1. Power window regulator switch assembly rear (Rear RH) |
| 2. Power window regulator motor assembly RH (Rear RH) | |
| 3. Wire harness | |
| Power window do not operate at all | 1. POWER fuse |
| 2. Power window relay | |
| 3. Power window regulator master switch assembly | |
| 4. Wire harness | |
| 5. Instrument panel J/B assembly | |
| Door glass does down during AUTO UP operation | 1. Front door glass run LH |
| 2. Front door window glass LH | |
| 3. Front door window regulator sub-assembly LH |
POWER WINDOW CONTROL SYSTEM (FOR BACK DOOR)
| Symptom | Suspected Area |
|---|---|
| AUTO UP/DOWN function does not operate | 1. Power window regulator motor assembly LH (Back door) |
| 2. Wire harness | |
| Back Door glass down during AUTO/UP operation | 1. Back door glass run |
| 2. Back door power window regulator motor assembly LH (Back door) | |
| 3. Back door glass | |
| Manual UP/DOWN function does not operate | 1. Rear wiper motor assembly |
| 2. Power window regulator motor assembly LH (Back door) | |
| 3. Wire harness | |
| 4. Multiplex network door ECU (Back door ECU) | |
| Manual UP/DOWN function via back door lock key cylinder does not operate | 1. Back door lock key cylinder assembly |
| 2. Wire harness | |
| 3. Multiplex network door ECU (Back door ECU) |
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.
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