Monitor Description

The power management control ECU (HV CPU) calculates the differences between the received HV battery voltage, boost converter voltage, and inverter voltage. If any of the differences exceed prescribed values, the power management control ECU (HV CPU) determines that there is a malfunction in the battery smart unit circuit. When the power management control ECU (HV CPU) detects this malfunction, it will illuminate the MIL and set a DTC.