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Throttle Position Sensor (9000 Series Turbo)

  1. Turn ignition off. Unplug connector from throttle position sensor, located on throttle body. Measure resistance between terminals No. 1 and 3 on sensor. Terminals are marked on sensor.
  2. At idle position, resistance should be about 2500 ohms. At full throttle, resistance should be approximately 1000 ohms. Resistance change should be smooth as throttle is opened or closed. Replace throttle position sensor if resistance is not as specified.
  3. Turn ignition on. Measure voltage between terminal No. 1 (Green/Red wire) of throttle position sensor harness connector and a good engine ground. If voltage is not 5 volts, check Green/Red wire between harness connector and ECM pin No. 42 (Green/Red wire) for opens or shorts to ground.
  4. Turn ignition off. Check for continuity between terminal No. 2 (Black/White wire) of throttle position harness connector and a good ground. Repair Black/White wire if there is no continuity.
  5. Reconnect wiring to sensor. Turn ignition on. Measure voltage between sensor terminal No. 3 (Gray wire) and a good ground. At idle position, voltage should be about 0.7 volt.
  6. With accelerator pedal in full throttle position, voltage should be about 4.5 volts. Replace throttle position sensor if voltage or resistance is not as specified.
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