BMS_a056 — SW Standby Supply Fault
Full alert identifier: BMS_a056_SW_Standby_Supply_Fault
Some fields retain information from an earlier alert reference.
Alert description
The Battery Management System (BMS) detects an unexpected condition with its internal low voltage supply inputs.
Potential impact
The standby power supply is unable to power Electronic Control Units (ECUs) during sleep which leads to greater support from the Low Voltage (LV) battery.
Set condition
The output voltage of the standby power supply is outside of the expected bounds.
Clear condition
The output voltage of the standby power supply is within the expected bounds.
Signals to check
These diagnostic fields are associated with BMS_a056. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Min Brick Voltage
BMS_
|
— |
Pack Voltage
BMS_
|
— |
Ss Out Too High
BMS_
|
— |
Ss Out Too Low
BMS_
|
— |
Ss Stuck Off
BMS_
|
— |
Ss Stuck On
BMS_
|
— |
Standby Enabled
BMS_
|
— |
Standby Supply Out V
BMS_
|
— |
Show 1 more field
| Signal | Unit |
|---|---|
Standby Sw Good
BMS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_a056.