BMS_f010 — SW Neg Contactor Drive
Full alert identifier: BMS_f010_SW_Neg_Contactor_Drive
Message shown in the car
Service is required Schedule service now
Alert description
There is an issue with the negative contactor drive circuit. This alert may indicate an open pack contactor drive circuit, a falsely closed pack contactor loop, an increase in the pack contactor coil current during economized operation, or that a pack contactor has popped open during operation.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Set condition
The battery management system (BMS) detects unexpected current through the negative contactor drive circuit.
Clear condition
The BMS detects nominal current through the negative contactor drive circuit.
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 |
|---|---|
Coil Current
BMS_
|
A |
Vehicle 12 V
BMS_
|
V |
| Signal | Unit |
|---|---|
Contactor State
BMS_
|
— |
Ctr
BMS_
|
— |
Ctr Err Type
BMS_
|
— |
Ctr Set Failed
BMS_
|
— |
Pre Chg State
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_f010.