ZDX V6-3.7L (2010)
Accelerator Pedal Position Sensor: Testing and Inspection
APP Sensor Signal Inspection
NOTE:
-
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.
-
Check for Pending or Confirmed DTCs with the HDS before doing this procedure. If any DTCs are indicated, troubleshoot them first, then do this
procedure.
-
Press the accelerator pedal several times to check its operation. If it does not operate smoothly, check the pedal. If you find a problem, replace the
accelerator pedal module See: Service and Repair.
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 to ON (II), or press the engine start/stop button to select the ON mode.
3. Make sure the HDS communicates with the PCM. If it doesn't, go to the DLC circuit troubleshooting See: Computers and Control
Systems/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.
-
If it is 0 %, the APP sensor is OK.
-
If it is not 0 %, Reconnect all connectors, then update the PCM if it does not have the latest software See: Computers and Control
Systems/Testing and Inspection/Programming and Relearning/PCM Update, or substitute a known-good PCM See: Computers and Control
Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview, then go to step 5.
5. Make sure the accelerator pedal is not pressed, then check the APP SENSOR in the DATA LIST with the HDS.
-
If it is 0 %, the APP sensor is OK.
-
If it is not 0 %, replace the accelerator pedal module See: Service and Repair, then go to step 1.
