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
Output Signal Circuit
- Turn ignition off. Disconnect ECU and ignition coil relay harness connectors. Check continuity between ECU terminal No. 16 (harness side) and ignition coil relay connector terminal No. 1 (Gray/Red wire). See appropriate wiring diagram in WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section. Continuity should be present. If continuity is not present, check harness and connectors between ECU and ignition coil relay.
- Check harness continuity between ECU and ignition coil in each cylinder. See Fig 1 . Continuity should be present. If continuity is not present, repair or replace harness or connectors.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.