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BMS_a152 — Isolation In Dc Charge

Full alert identifier: BMS_a152_Isolation_In_Dc_Charge

Alert description

The Battery Management System (BMS) detects low isolation while DC charging

Potential impact

The vehicle will not charge until the charge cable is removed and the alert is cleared

Set condition

The BMS detects that isolation resistance on the high voltage (HV) bus has fallen below the acceptable threshold while the vehicle is DC charging

Clear condition

The BMS detects that isolation while contactors are closed is above the minimum acceptable threshold

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal Unit
Active Side V No R BMS_a152_activeSideVNoR V
Active Side V With R BMS_a152_activeSideVWithR V
Iso R BMS_a152_isoR kOhm
Passive Side V No R BMS_a152_passiveSideVNoR V
Passive Side V With R BMS_a152_passiveSideVWithR V
Signal Unit
Mode BMS_a152_mode
0
MODE RESET
1
VEHICLE ISOLATION MODE
2
FEIM NEGATIVE MODE
3
FEIM POSITIVE MODE
4
VOLTAGE SETTLING MODE
—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_a152.

Browse all BMS alert codes