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 Infiniti G20 AutomaticFACTORY OEM SERVICE PROCEDURE
Ground Circuit
- Turn ignition off. Disconnect ignition coil sub-harness connector and ignition coil relay harness connector. Check continuity between ignition coil relay harness connector terminal No. 5 (Brown/Yellow wire) and ignition coil sub-harness connector. Continuity should be present. If continuity is not present, check harness connector to ECU and ignition coil sub-harness connector.
- Disconnect power transistor unit harness connector. Check continuity between Black wire on harness connector and ground. Continuity should be present. If continuity is not present, check harness connector between power transistor unit and engine ground.
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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