BMS_a142 — SW Isolation Degradation
Full alert identifier: BMS_a142_SW_Isolation_Degradation
Alert description
The Battery Management System (BMS) detects that the high voltage (HV) isolation contactor closed below the warning threshold.
Potential impact
This alert indicates that HV isolation is low, but above the sufficient level for vehicle operation.
Set condition
The BMS detects that the HV isolation was below the warning threshold when pack contactors closed.
Clear condition
The BMS detects that HV isolation is above the warning threshold when pack contactors closed.
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 |
|---|---|
Isolation Resistance
BMS_
|
kOhm |
| Signal | Unit |
|---|---|
Mode
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_a142.