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.
1992 Cadillac Seville BaseFACTORY OEM SERVICE PROCEDURE
Module Unlock Test No. 2
- Disconnect keyless entry module connector and lock left door. Connect voltmeter between connector terminals D1 (Orange wire) and C16 (Tan wire). If left door does not unlock, check left door lock motor wiring and components.
- If left door unlocks, check voltage between connector terminals D1 (Orange wire) and C1 (Black wire). If solenoid does not operate and latch does not open, check trunk lid release solenoid.
- If solenoid does operate and latch opens, lock right door. Check voltage between terminals D1 (Orange wire) and C2 (Black wire). If right door does not unlock, check Black wire from terminal C2 of keyless entry module to door lock relay. If wiring and relay are okay, check right door lock motor.
Factory Service Tools
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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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