W/Harness Inspection

HEV Control System
U1005 Lost Communication with Drive Motor Control Module (H-CAN) - Inspection/Repair:_:W/Harness Inspection

W/Harness Inspection




1. Perform a visual check of the Electrical systems including the harness connectors and check for corrosion and deformation.plus poor terminals fit.
2. Poor connections can be checked by monitoring signals in current data while moving and lightly pulling on the harness and connectors.
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 ?