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.
Power Window Master Switch
Remove master window control switch from vehicle. See POWER WINDOW SWITCH under REMOVAL & INSTALLATION. Check continuity between specified terminals while operating switch to specified position. See MASTER SWITCH TESTING table. See Fig 1 . Check continuity between appropriate master window switch connector and terminals with switch in appropriate position. Continuity between harness connector C510 terminals No. 1 and 2 (switch illumination circuit) should exist at all times. If continuity is not as specified, replace switch.
| Switch Position | Connector | Continuity Between Terminals No. | |
|---|---|---|---|
| Left Front | |||
| Down | C509 | 2 & 7 | |
| Up | C509 | 2 & 6 | |
| Right Front | |||
| Down | C509 | 2 & 3 | |
| Up | C509 | 2 & 4 | |
| Left Rear | |||
| Down | C510 | 2 & 6 | |
| Up | C510 | 2 & 7 | |
| Right Rear | |||
| Down | C510 | 2 & 4 | |
| Up | C510 | 2 & 5 | |
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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