Mazda RX-8 2004-06

Accelerator Pedal Position Sensor

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Description & Operation



A power supply is applied on the Accelerator Pedal Position (APP) Sensor (main) power terminal from the PCM. The ground terminal is grounded with PCM. When the accelerator pedal is moved from the idle position to the fully opened position, the resistance between the accelerator pedal position sensor (main) output terminal and ground terminal will increase according to the depression.

Removal & Installation





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Fig. Accelerator pedal position sensor location

Testing



  1. Turn the ignition switch to the ON position.
  2.  
  3. Measure the voltage at the PCM terminal and ground with connectors connected:

    Terminal 5F-1.555-1.655 volts with the accelerator pedal released
     
    Terminal 5F-3.78-3.93 volts with the accelerator pedal depressed
     
    Terminal 5C-1.005-1.105 volts with the accelerator pedal released
     
    Terminal 5C-3.23-3.38 volts with the accelerator pedal depressed
     

  4.  
  5. If any check above does not meet the specifications, check connectors and wiring between the sensor and PCM. If ok, replace PCM.
  6.  
  7. If the measured values are outside the standard value range, or if the voltage does not change smoothly, replace the sensor.
  8.  

 
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