Accelerator Pedal Position Sensor: Testing and Inspection
ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [13B-MSP]
NOTE:
- Before performing the following inspection, make sure to follow the troubleshooting flowchart. Initial Inspection and Diagnostic Overview
Voltage Inspection
1. Turn the ignition switch to the ON position.
2. Verify that the voltage at PCM terminals 1AO (M-MDS PID: APP1) and 1AP (M-MDS 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. Service and Repair
3. Verify that the voltage at PCM terminals 1AO (M-MDS PID: APP1) and 1AP (M-MDS PID: APP2) is as indicated in the table.
- If it cannot be verified, replace the accelerator pedal. Service and Repair
APP sensor output voltage
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 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 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