Monitor Description

The HV control ECU performs many diagnostic tests to verify proper operation of internal and external ECU systems. In one of these diagnostics, the HV control ECU checks the result of the motor main CPU self-test.

If the HV control ECU detects a "Fail" from the motor main CPU self-test, it will conclude that there is an internal malfunction in the motor main CPU. The HV control ECU will illuminate the MIL and set a DTC.