Circuit/System Testing
- Start the engine. Observe the scan tool throttle position (TP) sensor parameter while moving the harness connector of the sensor. The TP sensor parameter should not change abruptly.
- If the TP sensor parameter changes abruptly, repair the harness connector of the TP sensor.
- Engine running, observe the scan tool TP sensor parameter while moving the harness connector of the ECM. The TP sensor parameter should not change abruptly.
- If the TP sensor parameter changes abruptly, repair the harness connector of the ECM.
- Engine running, observe the scan tool TP sensor parameter while moving the wiring harness between the sensor and ECM. The TP sensor parameter should not change abruptly.
- If the TP sensor parameter changes abruptly, repair the wiring harness.