W/Harness Inspection

HEV Motor System
U1004 Lost Communication with Hybrid Powertrain Control Module (H-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?






H-CAN communication circuit inspection

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

Specification :Below 1Ohms




5. Is the measured registance within specification ?