P0A7F

DTC P0A7F HYBRID BATTERY PACK DETERIORATION

CIRCUIT DESCRIPTION

DTC Detection Condition:

The battery ECU calculates the SOC (state of charge) of the HV battery by estimating the amperage that flows into the HV battery and monitoring other values. The battery ECU sends the calculated SOC to the HV control ECU. The HV control ECU charges and discharges the HV battery depending on driving patterns based on the information sent by the battery ECU.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

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

Step 1:

INSPECTION PROCEDURE