Accelerator Pedal Position Sensor: Adjustments

ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT

Required Special Tools:
- MB991658: Test Harness Set






CAUTION:
1. The accelerator pedal position sensor should not be moved unnecessarily; it has been precisely adjusted by the manufacture. If the adjustment is disturbed for any reason, readjust as follows.
2. If the adjustment is disturbed for any reason, readjust as follows.

1. Remove the accelerator pedal complete.




2. Connect the scan tool MB991502 to the data link connector. If the can tool MB991502 is not used, carry out the following steps.
1. Disconnect the accelerator pedal position sensor connector, and connect the special tool (test harness: MB991658) to that connector. (Be careful not to confuse the terminal numbers.)
2. Connect a digital voltmeter between accelerator pedal position sensor connector terminal No. 3 accelerator pedal position sensor (main) output and terminal No. 3 accelerator pedal position sensor (main) earth.

3. Loosen the accelerator pedal position sensor mounting bolts, and hold the accelerator pedal position sensor temporary.




4. Check that the accelerator pedal arm touches the full-closed stopper.
5. Adjust the pedal arm by the adjusting screw so that clearance "A" (see the illustration) is 0.5 - 0.93 mm (0.020 - 0.037 in).
6. Hold the adjusting screw with the lock nut.
7. Turn the ignition switch to the ON position. (but do not start the engine.)
8. Turn the accelerator pedal position sensor until the output from accelerator pedal position sensor (main) satisfies the standard value.

Standard value: 0.905 - 1.165 volts

9. Tighten the accelerator pedal position sensor mounting bolts securely.
10. Install the accelerator pedal complete.