1995 Acura Integra GS-R, 2D CoupeFACTORY OEM SERVICE PROCEDURE

Power Steering Pressure (PSP) Switch Signal

  1. 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).
  2. If voltage is greater than one volt, unplug 2-wire connector on PSP switch located on power steering pump. Connect jumper between Green and Black wire terminals. If less than one volt exists, replace PSP switch. If voltage is greater than one volt, repair open in Green wire (between ECM terminal B8 and PSP switch) or Black wire and ground connection.
  3. 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 does not exist, go to next step.
  4. Turn ignition off. Unplug PSP switch connector. Measure voltage between ECM terminals B8 (positive) and A26 (negative). If voltage exists, replace PSP switch. If voltage does not exist, repair short in Green 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.