Corolla 2006-2007

Accelerator Pedal Position Sensor

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Operation



Specific to:

Toyota Corolla 2006-2008

The voltage, which is applied to terminals VPA1 and VPA2 of the ECM, varies between 0 V and 5 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA1 indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA1 circuit and is used to check the APP sensor itself.

The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA1 and VPA2, and controls the throttle actuator according to these signals.

Removal & Installation



Specific to:

Toyota Corolla 2006-2008

  1. Disconnect Accelerator Pedal Position Sensor connector.
  2.  
  3. Remove attaching screws.
  4.  

To install:

  1. Replace sensor.
  2.  
  3. Install attaching screws.
  4.  
  5. Connect Accelerator Pedal Position Sensor connector
  6.  

Testing



Specific to:

Toyota Corolla 2006-2008

  1. Disconnect the A25 Accelerator Pedal Position (APP) sensor connector.
  2.  
  3. Measure the resistance between each terminal standard resistance:
  4.  
  5. If sensor is not within standard resistance, replace sensor.

    Click image to see an enlarged view

    Fig. Testing resistance



    Click image to see an enlarged view

    Fig. Standard resistance

  6.  

 
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