Monitor Description

The battery smart unit calculates the resistance of the HV battery using amperage and voltage, and uses this resistance to determine the extent of deterioration of the HV battery. If the battery smart unit detects that the resistance of the HV battery has exceeded the standard, it determines that a malfunction has occurred. In addition, the battery smart unit monitors the SOC, and if the difference between the maximum and minimum SOC values exceeds the standard, it determines that a malfunction has occurred. When either of the DTC detection conditions is met, the HV control ECU will illuminate the MIL and set a DTC.