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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Engine Sensors & Switches >> Power Steering Pressure Switch System Test >> Sentra (2.5L)
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Sentra (2.5L)

  1. If CONSULT-II is available, go to next step. If CONSULT-II is not available, go to step  3.
  2. Start engine. Using CONSULT-II DATA MONITOR mode, observe PW/ST SIGNAL parameter. With steering wheel in neutral position PW/ST SIGNAL parameter should display OFF. When steering wheel is turned parameter should display ON. If parameter displays as specified, go to step  7. If parameter does not display as specified, go to step  4.
  3. Start engine. Backprobing at ECM, measure voltage between ground and ECM terminal No. 46 (Green wire). See Figure and Figure . When steering wheel is quickly turned, voltage should be about zero volts. When steering wheel is in neutral position, voltage should be about 5 volts. If voltage is as specified, go to step  7. If voltage is not as specified, go to next step.
  4. Turn ignition off. Disconnect ECM 116-pin harness connector. For ECM location, see Figure. Check continuity of Green wire between ECM harness connector terminal No. 46 and power steering switch harness connector terminal No. 1. See Figure. Continuity should exist. Also, check circuit for short to ground or short to voltage. If problem is found, go to next step. If no problem is found, go to step  7.
  5. Check for open or short in Green wire between ECM and power steering switch. If problem is found, repair as necessary. After repair, repeat step  2 or  3 as needed. If no problem is found, go to next step.
  6. Check power steering pressure switch. See POWER STEERING PRESSURE SWITCH . Replace, if necessary. If power steering pressure switch is okay, go to next step.
  7. No problem is indicated at this time. Problem may be intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article.
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