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
Vehicle Speed Sensor (VSS)
- VSS is located at left front wheel. Connect test harness between ECM and VSS harness connectors. Block rear wheels. Set parking brake. Raise and support front of vehicle. Connect voltmeter between test harness terminals A26 and B10.
- Turn ignition on. Slowly rotate left front wheel. Voltage should pulsate between zero and 5 volts. If voltage pulsates as specified, go to step 3. If voltage does not pulsate as specified, check for open or short in Yellow/Red wire between ECM terminal B16 and speed sensor. If wire is okay, replace faulty VSS or ECM.
- Substitute a known-good ECM, and retest. If problem goes away, replace ECM.
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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