Accelerator Pedal Position Sensor: Testing and Inspection

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION

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 2A and 3D 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 2A and 3D voltages are as shown in the given table.
- If voltage is not as in given 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. (Continuity check)

Open circuit

- If there is no continuity, the circuit is open. Repair or replace the harness.
- APP sensor terminal A (harness-side) and PCM terminal 2K (harness-side)
- APP sensor terminal B (harness-side) and PCM terminal 2H (harness-side)
- APP sensor terminal C (harness-side) and PCM terminal 2A (harness-side)
- APP sensor terminal D (harness-side) and PCM terminal 3G (harness-side)
- APP sensor terminal E (harness-side) and PCM terminal 3A (harness-side)
- APP sensor terminal F (harness-side) and PCM terminal 3D (harness-side)

Short circuit

- If there is continuity, the circuit is shorted. Repair or replace the harness.
- APP sensor terminal A (harness-side) and power supply
- APP sensor terminal A (harness-side) and body GND
- APP sensor terminal B (harness-side) and power supply
- APP sensor terminal C (harness-side) and power supply
- APP sensor terminal C (harness-side) and body GND
- APP sensor terminal D (harness-side) and power supply
- APP sensor terminal D (harness-side) and body GND
- APP sensor terminal E (harness-side) and power supply
- APP sensor terminal F (harness-side) and power supply
- APP sensor terminal F (harness-side) and body GND