TL V6-3.5L (2007)
Accelerator Pedal Position Sensor: Testing and Inspection
APP Sensor Signal Inspection
NOTE:
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This procedure checks the APP sensor in its fully closed position. In any other position, the APP sensor stores DTCs which are covered in other
troubleshooting procedures.
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Check for Temporary DTCs or DTCs with the HDS before doing this procedure. If any DTCs are indicated, troubleshoot them first, then do this
procedure.
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Press the accelerator pedal several times to check its operation. If it does not operate smoothly, check the pedal, the throttle cable, and the APP
sensor individually. If you find a problem in one of them, replace the faulty part(s).
1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the ECM/PCM and the other vehicle systems. If it does not, go to the DLC circuit troubleshooting. See:
Testing and Inspection/Component Tests and General Diagnostics/DLC Circuit Troubleshooting
4. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS.
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If it is below 2 %, the APP sensor is OK.
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If it is above 2 %, adjust the throttle cable, then go to step 4.
5. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS.
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If it is below 2 %, the APP sensor is OK.
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If it is above 2 %, update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then go to step 5.
6. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS.
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If it is below 2 %, the APP sensor is OK.
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If it is above 2 %, replace the APP sensor, then go to step 1.
