Solstice 2006-2008, Sky 2007-2008

Accelerator Pedal Position Sensor

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Operation



The accelerator pedal contains 2 individual Accelerator Pedal Position (APP) sensors within the assembly. The APP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:



A 5-volt reference circuit
 
A low reference circuit
 
A signal circuit
 

The APP sensors are used to determine the pedal angle. The Engine Control Module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is near the low reference and increases as the pedal is actuated. The APP sensor 2 signal voltage at rest position is also near the low reference and increases as the pedal is actuated.

Removal & Installation



  1. Remove the knee bolster.
  2.  
  3. Disconnect the Accelerator Pedal Position (APP) sensor electrical connector.
  4.  
  5. Remove the APP sensor nuts.
  6.  
  7. Remove the APP sensor from the vehicle.

    Click image to see an enlarged view

    Fig. Accelerator Pedal Position (APP) sensor

  8.  

To install:

  1. Install the APP sensor to the vehicle.
  2.  
  3. Install the APP sensor nuts and tighten to 89 inch lbs. (10 Nm).
  4.  
  5. Connect the APP sensor electrical connector.
  6.  
  7. Confirm that the APP sensor connector locking clip is fully secured.
  8.  
  9. Verify the operation of the accelerator pedal.
  10.  
  11. Install the knee bolster.
  12.  

Testing





Click image to see an enlarged view

Fig. Accelerator Pedal Position (APP) Sensor electrical connector

  1. Disconnect the Accelerator Pedal Position (APP) electrical connector.
  2.  
  3. With digital multimeter check pin C for 5 volt reference signal.
  4.  
  5. With digital multimeter check pin F for 5 volt reference signal.
  6.  
  7. If 5 volt reference signal is not present, repair circuit in question.
  8.  

 
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