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.
Master Switch Circuit
Disconnect master switch harness connector. Using DVOM, check circuit values at master switch harness connector. See Fig 1. Ensure circuit values are as specified. See MASTER SWITCH CIRCUIT VALUES table. If circuit values are not as specified, repair as necessary. See WIRING DIAGRAMS .
| Tester Connection | Condition | Circuit Value | ||
|---|---|---|---|---|
| 1 & Ground | Constant | Continuity | ||
| 7 & Ground | Ignition Switch In LOCK Or ACC Position | (1) No Voltage | ||
| 7 & Ground | Ignition Switch In ON Position | Battery Voltage | ||
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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.