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.
1993 Acura Integra GS-RFACTORY OEM SERVICE PROCEDURE
Power Circuits
- Check for battery voltage between ECM terminal D1 and ground. If battery voltage is not present, check BACK UP fuse (located in underhood fuse block). If fuse is okay, check for an open in White/Yellow wire between fuse block and control unit.
- Turn ignition on. Check for battery voltage between ground and ECM terminals A25 and B1. If battery voltage is not present, check ECM fuse (located in underhood fuse block). If fuse is okay, check for open in Yellow/Black wire between main relay and ECM terminals A25 and B1, faulty main relay, or faulty ignition switch.
- Connect voltmeter between ground and ECM terminal B9. Hold ignition switch in START position. Battery voltage should be present between ECM terminal B9 and ground ONLY when ignition switch is in START position.
- If voltage is not present, check fuse No. 18 (located in underdash fuse block). If fuse is okay, check for an open in Blue/White wire between fuse No. 18 and terminal B9 of ECM, or check for a defective ignition switch.
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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