Throttle Position Sensor: Testing and Inspection

NOTE:
- The throttle position sensor on this type of vehicle is a maintenance-free type.
- Perform the following test only when detected.

1. If not as PID value specified, inspect as follows:
- Verify that the throttle valve is fully closed.
- Accelerator cable the free play
- Throttle cable the free play
- Actuator cable the free play
2. If above specified okay, but PID value is out of specification, inspect as follows:

Open circuit
- Reference voltage circuit (Throttle position sensor connector terminal A and PCM connector terminal 21.)
- Throttle position circuit Throttle position sensor connector terminal C and PCM connector terminal 3E.)




- Ground circuit (Throttle position sensor connector terminal B and PCM connector terminal 3F.)

Short circuit
- Throttle position sensor connector terminal A and PCM connector terminal 21 to ground.
- Throttle position sensor connector terminal C and PCM connector terminal 3E to ground.

3. Reconnect the throttle position sensor connector.
4. If correct the above open or short circuit, replace throttle position sensor.