BMW Cars 1999-06

Accelerator Pedal Position Sensor

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Description & Operation



The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

The accelerator pedal position sensor is integrated into the accelerator pedal housing. Two hall sensors are used to provide the driver-s input request for acceleration. The hall sensors receive power (5 volts) and ground from the control module and produce linear voltage signals as the pedal is pressed from one level to another.

Removal & Installation




CAUTION
Make sure that the ignition is switched off and no electrical equipment is on or running.


NOTE
Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator pedal position sensor is required. To properly do so, you will need access to a DIS tester machine.

  1. Remove lower trim from instrument panel. It is located under the steering wheel and above the pedal cluster.
    NOTE
    Press the accelerator pedal by hand (and not your foot) to avoid bending the pedal tip and falsifying the measured values.

  2.  
  3. The accelerator sensor is attached to the pedal cluster under the driver-s side dashboard.
  4.  
  5. Unscrew the three screws and remove the control unit from the bracket that holds it in position. The bracket and unit will come out together.

    Click image to see an enlarged view

    Fig. The bracket screws (2) and cover will come out together

  6.  
  7. Remove the retaining ring and unhook the lever from the pedal assembly.
  8.  
  9. Unfasten the electrical plug connection and the screws holding the accelerator pedal position sensor (arrows).

    Click image to see an enlarged view

    Fig. Unfasten the electrical plug connection (1) and the screws holding the accelerator pedal position sensor (arrows)

  10.  
  11. When removing the sensor, note and remember its location and the position of the travel sensor-s arm and lever (1 and 2) in relation to the body of the sensor. It is a 71 degree angle between the body of the sensor and the arm. This angle must be precisely maintained.

    Click image to see an enlarged view

    Fig. Note the position of the levers

  12.  

To install:


WARNING
The lever of the sensor is set at the factory and must not be released. If the lever has been released (via the spring), the entire pedal travel sensor must be replaced.

  1. Replace the bracket with the captured nuts.

    Click image to see an enlarged view

    Fig. Install the bracket (1) with weld-in nuts

  2.  
  3. Reconnect the electrical plug connection and the tighten the screws that hold the PWG.
  4.  
  5. Replace the retaining ring and hook the lever onto the pedal assembly.
  6.  
  7. Check the adjustment of the kickdown switch.
    NOTE
    Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator sensor is required. Connect to the DIS machine and select diagnosis of EML IIIs control unit. To proceed, follow DIS (Diagnostic Information System) instructions. Measure the voltage of the accelerator pedal position sensor-s potentiometer with the DIS tester. The specified values should be:


    NOTE
    If the idle measurement value is outside the above-mentioned limit value, the 71-degree angle of the lever must be checked and a new lever installed if that angle is not maintained.



    Pedal travel sensor in idle position: 0.6 to 0.85 volts.
     
    Pedal travel sensor in full throttle position: 3.7 volts to 4.15 volts.
     
    Kickdown: 4.35 V to 4.55 volts
     

  8.  
  9. Operate accelerator pedal for full throttle position by hand to prevent a distortion of the measured values.
  10.  
  11. Readjust the full throttle stop on the accelerator pedal if the voltage values in the full throttle position do not attain the values mentioned above.
  12.  


CAUTION
Make sure that the ignition is switched off and no electrical equipment is on or running.


NOTE
Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator pedal position sensor is required. To properly do so, you will need access to a DIS tester machine.

  1. Remove lower trim from instrument panel. It is located under the steering wheel and above the pedal cluster.
    NOTE
    Press the accelerator pedal by hand (and not your foot) to avoid bending the pedal tip and falsifying the measured values.

  2.  
  3. The accelerator sensor is attached to the pedal cluster under the driver-s side dashboard.
  4.  
  5. Unscrew the three screws and remove the control unit from the bracket that holds it in position. The bracket and unit will come out together.

    Click image to see an enlarged view

    Fig. The bracket screws (2) and cover will come out together

  6.  
  7. Remove the retaining ring and unhook the lever from the pedal assembly.
  8.  
  9. Unfasten the electrical plug connection and the screws holding the accelerator pedal position sensor (arrows).

    Click image to see an enlarged view

    Fig. Unfasten the electrical plug connection (1) and the screws holding the accelerator pedal position sensor (arrows)

  10.  
  11. When removing the sensor, note and remember its location and the position of the travel sensor-s arm and lever (1 and 2) in relation to the body of the sensor. It is a 71 degree angle between the body of the sensor and the arm. This angle must be precisely maintained.

    Click image to see an enlarged view

    Fig. Note the position of the levers

  12.  

To install:


WARNING
The lever of the sensor is set at the factory and must not be released. If the lever has been released (via the spring), the entire pedal travel sensor must be replaced.

  1. Replace the bracket with the captured nuts.

    Click image to see an enlarged view

    Fig. Install the bracket (1) with weld-in nuts

  2.  
  3. Reconnect the electrical plug connection and the tighten the screws that hold the PWG.
  4.  
  5. Replace the retaining ring and hook the lever onto the pedal assembly.
  6.  
  7. Check the adjustment of the kickdown switch.
    NOTE
    Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator sensor is required. Connect to the DIS machine and select diagnosis of EML IIIs control unit. To proceed, follow DIS (Diagnostic Information System) instructions. Measure the voltage of the accelerator pedal position sensor-s potentiometer with the DIS tester. The specified values should be:


    NOTE
    If the idle measurement value is outside the above-mentioned limit value, the 71-degree angle of the lever must be checked and a new lever installed if that angle is not maintained.



    Pedal travel sensor in idle position: 0.6 to 0.85 volts.
     
    Pedal travel sensor in full throttle position: 3.7 volts to 4.15 volts.
     
    Kickdown: 4.35 V to 4.55 volts
     

  8.  
  9. Operate accelerator pedal for full throttle position by hand to prevent a distortion of the measured values.
  10.  
  11. Readjust the full throttle stop on the accelerator pedal if the voltage values in the full throttle position do not attain the values mentioned above.
  12.  


CAUTION
Make sure that the ignition is switched off and no electrical equipment is on or running.


NOTE
Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator pedal position sensor is required. To properly do so, you will need access to a DIS tester machine.

  1. Remove lower trim from instrument panel. It is located under the steering wheel and above the pedal cluster.
    NOTE
    Press the accelerator pedal by hand (and not your foot) to avoid bending the pedal tip and falsifying the measured values.

  2.  
  3. The accelerator sensor is attached to the pedal cluster under the driver-s side dashboard.
  4.  
  5. Unscrew the three screws and remove the control unit from the bracket that holds it in position. The bracket and unit will come out together.

    Click image to see an enlarged view

    Fig. The bracket screws (2) and cover will come out together

  6.  
  7. Remove the retaining ring and unhook the lever from the pedal assembly.
  8.  
  9. Unfasten the electrical plug connection and the screws holding the accelerator pedal position sensor (arrows).

    Click image to see an enlarged view

    Fig. Unfasten the electrical plug connection (1) and the screws holding the accelerator pedal position sensor (arrows)

  10.  
  11. When removing the sensor, note and remember its location and the position of the travel sensor-s arm and lever (1 and 2) in relation to the body of the sensor. It is a 71 degree angle between the body of the sensor and the arm. This angle must be precisely maintained.

    Click image to see an enlarged view

    Fig. Note the position of the levers

  12.  

To install:


WARNING
The lever of the sensor is set at the factory and must not be released. If the lever has been released (via the spring), the entire pedal travel sensor must be replaced.

  1. Replace the bracket with the captured nuts.

    Click image to see an enlarged view

    Fig. Install the bracket (1) with weld-in nuts

  2.  
  3. Reconnect the electrical plug connection and the tighten the screws that hold the PWG.
  4.  
  5. Replace the retaining ring and hook the lever onto the pedal assembly.
  6.  
  7. Check the adjustment of the kickdown switch.
    NOTE
    Whenever the accelerator pedal position sensor is disconnected, basic adaptation of the accelerator sensor is required. Connect to the DIS machine and select diagnosis of EML IIIs control unit. To proceed, follow DIS (Diagnostic Information System) instructions. Measure the voltage of the accelerator pedal position sensor-s potentiometer with the DIS tester. The specified values should be:


    NOTE
    If the idle measurement value is outside the above-mentioned limit value, the 71-degree angle of the lever must be checked and a new lever installed if that angle is not maintained.



    Pedal travel sensor in idle position: 0.6 to 0.85 volts.
     
    Pedal travel sensor in full throttle position: 3.7 volts to 4.15 volts.
     
    Kickdown: 4.35 V to 4.55 volts
     

  8.  
  9. Operate accelerator pedal for full throttle position by hand to prevent a distortion of the measured values.
  10.  
  11. Readjust the full throttle stop on the accelerator pedal if the voltage values in the full throttle position do not attain the values mentioned above.
  12.  

 
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