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Home >> Nissan-Datsun >> 1993 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Closed Throttle Position Switch System Test (300ZX)
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Closed Throttle Position Switch System Test (300ZX)

  1. Turn ignition on. Measure voltage between ECM terminal No. 54 (Light Green/Red wire) and ground. Depress accelerator. Voltage should be approximately zero volts. Release accelerator pedal. Voltage should be 9-10 volts. If voltage is not as specified, go to next step. If voltage is as specified, system is functioning properly.
  2. Turn ignition off. Disconnect and inspect closed throttle position switch harness connector for pushed-out, bent, damaged or corroded terminals. Repair connector as necessary. Disconnect and inspect ECM harness connector for pushed-out, bent, damaged or corroded terminals. Repair connector as necessary.
  3. Check continuity of Light Green/Red wire between ECM terminal No. 54 and closed throttle position switch harness connector. Continuity should exist. Check continuity of Green/Red wire between ECM terminal No. 57 and closed throttle position switch harness connector. Continuity should exist.
  4. If continuity does not exist, repair harness or connectors as necessary. If continuity exists, check closed throttle position switch for proper installation. See SPECIFICATIONS article. If switch is installed properly, test switch. See CLOSED THROTTLE POSITION SWITCH TEST under ENGINE SENSORS & SWITCHES  .
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