This test must be performed prior to diagnosing certain specific hybrid faults. his test verifies the power supply for the Inverter and the Power Electric Carrier (PEC).
Note: You must perform the Electrical Pretest before performing the Hybrid Electrical Pretest.
Note: This test is called out in the procedures where it is required
Electrical Pretest Detection
There is no detection process specifically for the basic electrical supply; however, failures of this type are generally detected by the hybrid system or driver as some other type of fault code or symptom.
Hybrid Electrical Pretest Fallback
Loss of ignition power causes the hybrid system to be inoperable. In this situation, the vehicle will run under diesel power only.
Possible Causes Indicated by Eaton Fuller Hybrid Transmission Hybrid Electrical Pretest
(MY08) Low-voltage can be caused by Power Harness connections from Inverter or BCU.
(MY09) Low-voltage can be caused by power harness connections from Inverter or PEC.