W/Harness Inspection

C1612 CAN Time-out TCM

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminal condition. 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

Open Check
1. Ignition "OFF" & Engine "OFF".
2. Disconnect HECU and PCM (TCM) connector.
3. Measure resistance between CAN HIGH terminal (LOW terminal) of the HECU harness connector and CAN HIGH terminal (LOW terminal) terminal of the PCM (TCM) harness connector.

Specification :Approx. below 1 Ohms




4. Is the measured resistance within specifications?