Throttle Position Sensor: Adjustments

Throttle Position Sensor/Switch:

If throttle position sensor, closed throttle position switch or wide open throttle position switch is replaced or removed, it is necessary to install it in proper position, by following the procedure as shown below:

1. Install throttle position sensor body in throttle body. Do not tighten bolts. Leave bolts loose.
2. Connect throttle position sensor and closed throttle position switch harness connector.
3. Start engine and warm it up sufficiently.

Diagnostic Mode Selector Switch:

4. Turn diagnostic test mode selector on Engine Control Module (ECM) fully clockwise.
5. Disconnect closed throttle position switch harness connector.



6. Check closed throttle position switch OFF ON speed with circuit tester, closing throttle valve manually.

Closed throttle position switch OFF ON speed: Engine speed (Idle speed in "N" position) + 250 +/- 150 rpm

7. If NG, set closed throttle position switch OFF ON speed to the specified value by turning throttle position sensor body. Connect circuit tester with terminals (c) and (b) on closed throttle position switch side and find out OFF ON point.
8. Tighten throttle position sensor installing bolts carefully after setting so that throttle position sensor does not move.