Throttle Position Sensor: Testing and Inspection
Closed Throttle Position Switch1. Verify that the throttle valve is at the closed throttle position.
2. Disconnect the throttle position sensor connector.
3. Inspect continuity between throttle position sensor connector terminals C and D by using an ohmmeter.
4. If there is no continuity, adjust the throttle position sensor.
5. Insert a 0.37 mm {0.015 in} feeler gauge between the throttle adjusting screw (TAS) and the throttle lever. Verify that there is no continuity between terminals C and D.
6. If there is continuity, adjust the throttle position sensor. (Refer to THROTTLE POSITION SENSOR ADJUSTMENT.)
Adjustments
Throttle Position Sensor
1. Connect the SSTs(NGS) to the data link connector-2.
2. Verify that the throttle valve is at the closed throttle position.
3. Turn the ignition switch to ON.
4. Select the PID/DATA MONITOR AND RECORD function of the NGS.
5. Select "TP V" on the NGS display. NGS measures and shows the voltage.
Specification
Closed throttle position: 0.1 - 1.1 V
Wide open throttle: 2.8 - 4.5 V
(Verify that the voltage increase is directly proportioned to the throttle valve opening angle.)
6. If not as specified, adjust the throttle position sensor. (Refer to INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)