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 ECM connector.
3. Measure resistance between CAN HIGH, LOW terminal of the HECU harness connector and CAN HIGH, LOW terminal terminal of the ECM harness connector.

Specification : Approx. 0 Ohm









4. Is the measured resistance within specifications?