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 Steering Pressure (PSP) Switch Signal
- Connect ECM test harness between ECM and vehicle harness connector. Turn ignition on. Measure voltage between ECM terminals B8 (positive) and A26 (negative). See Figure . If voltage is less than one volt, go to step 3.
- If voltage is greater than one volt, unplug 2-wire connector on PSP switch located on power steering pump. Connect jumper between Red and Black wire terminals. If less than one volt is present, replace PSP switch. If voltage is greater than one volt, repair open in Red wire (between ECM terminal B8 and PSP switch) or Black wire and ground connection.
- Start engine. Turn steering wheel slowly. Measure voltage between ECM terminals B8 (positive) and A26 (negative) while wheel is being turned. If battery voltage exists, PSP signal is okay. If battery voltage is not present, go to next step.
- Turn ignition off. Unplug PSP switch connector. If voltage is present, replace PSP switch. If voltage is not present, repair short in Red wire between ECM terminal B8 and PSP 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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