Throttle Position Sensor: Testing and Inspection

Using The Engine Signal Monitor
1. Connect the Special Service Tools Engine Signal Monitor to the PCM.
2. Verify that the throttle valve is at the closed throttle position.
3. Turn the ignition switch to ON.
4. Measure the voltage at PCM terminal 3F. Verify that the voltage increase is directly proportioned to the throttle valve opening angle.

Specification: Closed throttle: 0.1-1.1 V
Wide open throttle: 3.0-4.6 V

5. If not as specified, adjust the throttle position sensor.




Using the New Generation Star Tester
1. Connect the Special Service Tools New Generation Star (NGS) tester to the data link connector 2.
2. Verify that the throttle valve is at the closed throttle position.




3. Select the PID/DATA MONITOR AND RECORD function.
4. Select "TP V" on the NGS display. The NGS measures and shows the voltage. Verify that the voltage increase is directly proportioned to the throttle valve opening angle.

Specification: Closed throttle: 0.1-1.1 V
Wide open throttle: 3.0-4.6 V

5. If not as specified, adjust the throttle position sensor.