Component Tests and General Diagnostics

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION

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




1. Connect the WDS or equivalent to the DLC-2.
2. Turn the ignition switch to ON position.
3. Select APP1 and APP2 PID on the WDS or equivalent.
4. Verify that the APP1 and APP2 PID is within the specification when the accelerator pedal not depressed. (See PCM INSPECTION.)

Circuit Open/Short Inspection




1. Disconnect the PCM connectors.







2. Disconnect the APP sensor connector.
3. Inspect the following wiring harnesses for an 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 1AE
- APP sensor terminal B and PCM terminal 1Y
- APP sensor terminal C and PCM terminal 1AA
- APP sensor terminal D and PCM terminal body ground
- APP sensor terminal E and PCM terminal 1AL
- APP sensor terminal F and PJB (California emission regulation applicable model)
- APP sensor terminal F and main relay terminal E (except for California emission regulation applicable model)

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