W/Harness Inspection

HEV Control System
P0562 System Voltage Low - Inspection/Repair:_:W/Harness Inspection

Terminal and Connector 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. Monitoring a DVOM on min/max or the VMI while wiggling connectors may help find the problem.
4. Has a problem been found?






Power Circuit Inspection

Open or Short Check
1. Ignition "OFF".
2. Disconnect HCU harness connector.
3. Ignition "ON".
4. Measure Voltage between VB/IG terminal of HCU harness connector and chassis ground.

Specification :B +.




5. Is the measured voltage within specifications?






Ground Circuit Inspection

Open or Short Check
1. Ignition "OFF".
2. Disconnect HCU connector.
3. Measure resistance between ground terminal of HCU harness connector and chassis ground.

Specification :Approx. 1.0 Ohms




4. Is the measured resistance within specifications?