Throttle Position Sensor: Testing and Inspection

THROTTLE POSITION (TP) SENSOR INSPECTION [AJ]

NOTE: Perform the following inspection only when directed.

1. Verify that no DTC related to APP sensor has been detected.
- If any DTCs related to APP sensor have been detected, perform the DTC inspection. Diagnostic Trouble Code Descriptions




2. Connect the WDS or equivalent to the DLC-2.
3. Turn the ignition switch to ON position.
4. Select TP1 or TP2 PID (percentage) on the WDS or equivalent.
5. Verify that the TP1 or TP2 PID is within the specification when the accelerator pedal not depressed. Diagnostic Trouble Code Descriptions




6. Operate the accelerator pedal and verify that the TP1 or TP2 PID (percentage) changes as shown in the following graph.
- If not verified, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit, replace the throttle body.

Circuit Open/Short Inspection




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

Open circuit
- Throttle body terminal C and PCM terminal 2AI
- Throttle body terminal D and PCM terminal 2AR
- Throttle body terminal E and PCM terminal 2AN
- Throttle body terminal F and PCM terminal 2AM

Short circuit
- Throttle body terminal C and power supply
- Throttle body terminal C and body ground
- Throttle body terminal D and power supply
- Throttle body terminal D and body ground
- Throttle body terminal E and power supply
- Throttle body terminal F and power supply
- Throttle body terminal F and body ground