LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 1992 >> Prelude Si, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Power Steering Oil Pressure Switch

Power Steering Oil Pressure Switch

  1. Connect test harness between ECU and connector. Refer to Figure. Turn ignition on. Measure voltage between test harness terminals B8 (+) and A26 (-). See Figure. If voltage is present, go to next step. If voltage is not present, go to step 4).
  2. Disconnect 2-pin connector on P/S switch. On Accord, jumper Red wire terminal to Black wire terminal. On Civic, jumper Brown/Red wire terminal to Black wire terminal. On Prelude, jumper Red/Green wire terminal to Black wire terminal.
  3. On all models, check for voltage at test harness terminals. If voltage is not present, replace P/S switch. If voltage is present, repair open in Red (Brown/Red or Red/Green) wire between ECU B8 terminal and P/S switch or Black wire between P/S switch and ground.
  4. If voltage was not present in step 1), start engine. Turn steering wheel slowly. Measure voltage between positive and negative test harness terminals. If battery voltage is present, P/S switch signal is okay. If battery voltage is not present, go to next step.
  5. Turn ignition off. Disconnect test harness "B" connector from main wire harness only, not ECU. Turn ignition switch to ON position. If battery voltage is present, go to next step. If battery voltage is not present, substitute a known good ECU, and retest. If voltage is now as specified, replace original ECU.
  6. Reconnect "B" harness connector to main wire harness, and disconnect 2-pin connector on P/S switch. If battery voltage is present, replace P/S switch. If battery voltage is not present, repair short in Red (Brown/Red or Red/Green depending on model) wire between ECU B8 terminal and P/S switch.
scientia non olet · About LEMON Manuals