Accelerator Pedal Position Sensor: Testing and Inspection

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [L3]

NOTE: Perform the following inspection only when directed.

Voltage Inspection

1. Turn the ignition key to ON position (Engine OFF).
2. Verify that the PCM terminal 1AO and 1AP change smoothly while throttle valve is gradually opened.
- If as verified, go to next step.
- If not as verified, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit- replace the throttle body

3. Verify that the PCM terminal 1AO and 1AP voltages are as shown in the following table.




APP sensor output voltage

- If voltage is not as following table, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit, replace accelerator pedal.

Circuit Open/Short Inspection




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

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
- APP sensor terminal A and PCM terminal 1AJ
- APP sensor terminal B and PCM terminal 1AV
- APP sensor terminal C and PCM terminal 1AP
- APP sensor terminal D and PCM terminal 1AL
- APP sensor terminal E and PCM terminal 1AS
- APP sensor terminal F and PCM terminal 1AO

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