Monitor Description

The power management control ECU (HV CPU) performs diagnostic tests to verify proper operation of internal and external ECU systems. In one of these tests, the power management control ECU (HV CPU) monitors specific RAM circuits of the power management control ECU (HV CPU). If the power management control ECU (HV CPU) detects an error in the RAM circuits, it will conclude that there is an internal malfunction in the power management control ECU (HV CPU). The power management control ECU (HV CPU) will illuminate the MIL and set a DTC.