At VREF Terminal Inspection

1. Turn the ignition switch to ON.
2. Measure the voltage between TP sensor connector terminal A (vehicle side) and body ground.
- If not as specified, turn the ignition switch off. Disconnect the PCM connector, TP sensor connector, EGR valve position sensor connector, EGR boost sensor connector, and fuel tank pressure sensor connector.

Specification: Approx. 5.0 V

3. Verify there is no continuity (short) between TP sensor connector terminal A (vehicle side) and body ground.
- If there is continuity, repair the ground harness.




4. Verify there is continuity between the PCM connector terminal 3A and each sensor connector terminals such as TP sensor and others, which is applied with Vref.
- If there is no continuity, repair the harness (open) between the PCM connector 3A and each sensor connector terminals such as TP sensor and others, which is applied with Vref.
- If B+ is applied to TP sensor connector terminal A, disconnect the battery positive connector and inspect the continuity (short) between the battery positive connector and each sensor connector terminals such as TP sensor and others, which is applied with Vref.