W/Harness Inspection

U0100 Lost Communication With ECM/PCM \'A\'

Inspection/Repair - 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?






Signal Circuit Inspection

1. Ignition "OFF".
2. Disconnect "PCM" connector.
3. Measure resistance between CAN high terminal and CAN low terminal of PCM harness connector.

Specification : Approx. 120 Ohms ± 10 Ohms








1. Is measured resistance within specifications?