W/Harness Inspection

4WD Control

P0120 Throttle/Pedal Position Sensor/Switch 'A' Circuit - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






CAN Signal Inspection

1. IG key "ON", ENGINE "ON".
2. Connect 4WD ECM connector
3. Monitor signal waveform between CAN High/Low Line of 4WD ECM harness connector and chassis ground.

Specification : Signal Waveform & Data









CAUTION:
The above value is only for reference.
The actual value may differ from it according to various engine condition.

4. Is CAN Signal display near the specified value?






CAN comm. Line Inspection

1. IG key "OFF", ENGINE "OFF".
2. Disconnect 4WD ECM connector.
3. Measure resistance between CAN High Line of the 4WD ECM harness connector and CAN Low terminal of the 4WD ECM harness connector.

Specification : Approx. 60 Ohms









CAUTION:
The above value is only for reference.
The actual value may differ from it according to various engine condition.

4. Is resistance display near the specified value?