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
Intake Air Control Valve (IACV)
- Turn ignition off. Unplug 2-wire connector on IACV. Turn ignition on. Measure voltage between Yellow/Black wire terminal of IACV connector and ground. If battery voltage is not present, repair open in Black/Yellow wire between IACV connector and main relay. If battery voltage is present, go to step 2.
- Connect ECM test harness connector "A" to main wire harness only. DO NOT connect to ECM. Turn ignition on. Momentarily connect and disconnect jumper wire between terminals A9 and A23. See Figure . If IACV clicks, substitute a known-good IACV and recheck symptom. If IACV does not click, check Yellow/Blue wire between IACV and ECM terminal A9. If wire is okay, replace IACV.
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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