W/Harness Inspection

HEV Motor System
U1116 Lost Communication With Motor Electronics Coolant Pump (C-CAN) - 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?






CAN communication circuit inspection

CAN communication line inspection
1. IG KEY OFF.
2. Disconnect MCU connector and EWP connector.
3. Measure the resistance between CAN-HIGH terminal of MCU harness connector and CAN-HIGH terminal of EWP harness connector.
4. Measure the resistance between CAN-LOW terminal of MCU harness connector and CAN-LOW terminal of EWP harness connector.

Specification :Below 1Ohms








5. Is the measured registance within specification ?