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
HINT:
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.
Power window control system
| Symptom | Suspected area |
|---|---|
| All power windows do not operate | 1. Power source circuit |
| 2. Power window switch circuit | |
| 3. Power window regulator master switch assembly | |
| Driver side power window does not operate | 1. Power window motor circuit |
| 2. Power window regulator master switch assembly | |
| Jam protection function and auto up or down function do not operate | 1. Jam protection limit switch circuit |
| 2. Jam protection pulse switch circuit | |
| 3. Power window regulator master switch assembly | |
| 4. Theft warning ECU assembly | |
| Window lock function does not operate | 1. Power window switch circuit |
| 2. Power window regulator master switch assembly | |
| Remote control of all windows (except driver side) does not operate with master switch (window operates normally with each switch of master switch) | 1. Power window switch circuit |
| 2. Power window regulator master switch assembly | |
| Key related power window operations cannot be done with driver door key cylinder (master switch operation is normal) | 1. Door key lock and unlock switch circuit |
| 2. Inspect door lock control system | |
| 3. Power window switch circuit | |
| 4. Power window regulator master switch assembly | |
| Power window does not operate with keyless entry transmitter (windows operate normally with master switch) | 1. Inspect wireless door lock control system |
| 2. Replace power window regulator master switch assembly | |
| 3. Theft warning ECU assembly | |
| Window moves down without being ordered during up operation | 1. Jam protection limit switch circuit |
| 2. Power window motor circuit | |
| 3. Power window regulator master switch assembly |
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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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