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Home >> Acura >> 1998 >> Integra GS-R, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Control System >> Power Steering Pressure (PSP) Switch Signal >> Integra
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Power Steering Pressure (PSP) Switch Signal: Integra

  1. Turn ignition on. Backprobing, measure voltage between PCM 31-pin connector terminal No. 16 (Green wire) and PCM 32-pin connector terminal No. 9 (Brown/Black wire). See Figure. If voltage is less than one volt, go to step 3). If voltage is not less than one volt, go to next step.
  2. Turn ignition off. Disconnect PSP switch 2-pin connector. Connect a jumper between PSP switch harness connector terminals. Turn ignition on. Measure voltage between PCM 31-pin connector terminal No. 16 (Green wire) and PCM 32-pin connector terminal No. 9 (Brown/Black wire). See Figure. If voltage is less than one volt, replace PSP switch. If voltage is not less than one volt, repair open in Green wire between PCM 31-pin connector and PSP switch. If Green wire is okay, repair open in Black wire between PSP switch and ground connector located at left front corner of engine. See WIRING DIAGRAMS article.
  3. Start engine. Turn steering wheel slowly to full lock position. Measure voltage between PCM 31-pin connector terminal No. 16 (Green wire) and PCM 32-pin connector terminal No. 9 (Brown/Black wire). See Figure. If battery voltage does not exist, go to next step. If battery voltage exists, PSP signal is okay.
  4. Turn ignition off. Disconnect PSP switch 2-pin connector. Turn ignition on. Backprobing, measure voltage between PCM 31-pin connector terminal No. 16 (Green wire) and PCM 32-pin connector terminal No. 9 (Brown/Black wire). See Figure. If battery voltage does not exist, go to next step. If battery voltage exists, replace PSP switch.
  5. Turn ignition off. Disconnect PCM 31-pin connector. Check continuity between ground and PCM 31-pin harness connector terminal No. 16 (Green wire). If continuity exists, repair short in Green wire between PCM 31-pin connector and PSP switch. If continuity does not exist, substitute a known good PCM, then recheck for battery voltage. If battery voltage exists, replace original PCM.
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