Accelerator Pedal Position Sensor: Adjustments

CLOSED THROTTLE POSITION SWITCH AND ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT





1. Connect the scan tool to the data link connector. When not using the scan tool, proceed as follows.
1. Disconnect the connector of the accelerator pedal position sensor.




2. Connect an ohmmeter between terminal 3 (closed throttle position switch) and terminal 4 (sensor ground) by using jumper wires.




2. Insert a feeler gauge with a thickness of 0.85 mm (0.0334 in.) between the levers shown in the illustration to a depth of no more than 3 mm (0.1181 in.)

NOTE: Inserting the feeler gauge more than 3mm (0.1181 in.) will result in incorrect adjustment.

3. Turn the ignition switch to ON (but do not start the engine).




4. Loosen the accelerator pedal position sensor mounting bolt; then turn the accelerator pedal position sensor body counter clockwise as far as it will go.
5. In this condition, make sure that the closed throttle position switch is ON. (There is continuity between terminals 3 and 4.)
6. Slowly turn the accelerator pedal position sensor clockwise until the point at which the closed throttle position switch is turned OFF (continuity between terminals 1 and 2 changes to non-continuity) is found.
Tighten the accelerator pedal position sensor installation bolt at that position.




7. When using the scan tool, select "Traction Control System". When not using the scan tool, proceed as follows.
1. Disconnect the accelerator pedal position sensor connector and connect the special tool (test harness: MB991348) in between.
2. Connect a digital voltmeter between terminal 2 (sensor output) and terminal 4 (sensor ground).
3. Turn the ignition switch to ON (but do not start the engine.

8. Check the accelerator pedal position sensor output voltage.
Standard value: 400-1,000 mV

9. If the voltage is outside the standard value, check the accelerator pedal position sensor and related harnesses.
10. Remove the feeler gauge.
11. Turn the ignition switch to OFF.
12. Disconnect the scan tool.
When the scan tool is not used, remove the special tool and connect the accelerator pedal position sensor.