General Information

HEV Battery System
P0AA6 Hybrid Battery Voltage System Isolation Fault - General Information

Component Location





General Description

To prevent human electrical shock, the High Voltage Battery has been insulated from the body of vehicle.
The Body Managing System (BMS) ECU self-checks the degree of insulation. If the degree of insulation is less than a constant value, it could cause the risk of electric shock.
Field action when High Voltage Battery discharges






DTC Description

The BMS ECU sets P0AA6 when the insulation value between the high voltage line and the body gets under 300Ohms.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram






















Signal Waveform & Data












Fig.1) SOC 45.% of high voltage battery,(Current Data) - the isolation resistance of high voltage battery in the KEY ON status
Fig.2) SOC 47.5% of high voltage battery,(Current Data) - the isolation resistance of high voltage battery in the EV mode status
Fig.3) SOC 46.% of high voltage battery,(Current Data) - the isolation resistance of high voltage battery in the engine runing status