Accelerator Pedal Position Sensor: Testing and Inspection

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION

NOTE: Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See FOREWORD.) Flow of Diagnosis

Voltage Inspection
1. Turn the ignition switch to the ON position.
2. Verify that the voltage at PCM terminals 5F (WDS PID: APP1) and 5C (WDS PID: APP2) increases while gradually increasing the accelerator pedal opening angle according to the accelerator pedal opening angle.
- If it can be verified, go to the next step.
- If it cannot be verified even though the related wiring harnesses have no malfunction, replace the accelerator pedal.




3. Verify that the voltage at PCM terminals 5F (WDS PID: APP1) and 5C (WDS PID: APP2) is as indicated in the table.
- If it cannot be verified, replace the accelerator pedal.

Circuit Open/Short Inspection




1. Disconnect the PCM connectors.
2. Disconnect the APP sensor connector.
3. Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)

Open circuit
- If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness.
- APP sensor terminal A and PCM terminal 4X
- APP sensor terminal B and PCM terminal 5AB
- APP sensor terminal C and PCM terminal 5C
- APP sensor terminal D and PCM terminal 4Y
- APP sensor terminal E and PCM terminal 5AE
- APP sensor terminal F and PCM terminal 5F

Short circuit
- If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness.
- APP sensor terminal D and body ground
- APP sensor terminal D and power supply
- APP sensor terminal A and body ground
- APP sensor terminal A and power supply
- APP sensor terminal F and body ground
- APP sensor terminal F and power supply
- APP sensor terminal C and body ground
- APP sensor terminal C and power supply