Throttle Position Sensor: Adjustments

CLOSED THROTTLE POSITION SWITCH AND THROTTLE POSITION SENSOR ADJUSTMENT
1. Connect the scan tool to the data link connector. When not using the scan tool, proceed as follows.
- Disconnect the connector of the throttle position sensor.
- Connect an ohmmeter between terminal 2 (closed throttle position switch) and 1 (sensor ground) by using jumper wires.





2. Insert a feeler gage with a thickness of 0.65 mm (.0256 in.) between the fixed SAS and throttle lever.
3. When using the scan tool, turn the ignition switch ON. (but do not start the engine.)





4. Loosen the throttle position sensor mounting bolts and turn the throttle position sensor body fully clockwise.
5. In this condition, make sure that the closed throttle position switch is ON. (There is continuity between terminals 1 and 2.)





6. Slowly turn the throttle position sensor clockwise until the point at which the idle switch is turned off (continuity between terminals 1 and 2 changes to non-continuity) is found.
Tighten the throttle position sensor installation bolt at that position.





7. When not using the scan tool, proceed as follows.
- Connect the special tool (test harness set) between the disconnected throttle position sensor connectors. (Connect all terminals, while being careful not to mistake the terminal numbers.)
- Connect a digital voltmeter between the throttle position sensor terminal 3 (sensor output) and terminal 1 (sensor ground.)
- Turn the ignition switch ON (but do not start the engine).
8. Check the throttle position sensor output voltage. Standard value: 400-1,000 mV
9. If the voltage is outside the standard value, check the throttle position sensor and associated harnesses.
10. Remove the feeler gage.
11. Turn the ignition switch to OFF.