VCFRONT_a401 — Dead LV Minimal Ah Discharged
Full alert identifier: VCFRONT_a401_deadLVMinimalAhDischarged
Alert description
The vehicle controller has determined the low voltage (LV) battery is no longer functional, as it has reached a low measured voltage with minimal Amp hours discharged.
Potential impact
The LV battery may be unable to support the vehicle's electrical systems, or to successfully precharge the high voltage (HV) bus.
Set condition
The vehicle controller detects the LV battery has reached a low voltage with minimal Amp hours discharged. Alert log signal data should provide more information, including the load current, battery temperature, and voltage dip measured.
Clear condition
The vehicle controller loses all electrical power from the LV battery and power conversion system (PCS), as would happen during LV battery replacement.
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 |
|---|---|
IBS Amp Hours
VCFRONT_
|
Ah |
IBS Current
VCFRONT_
|
A |
IBS Voltage
VCFRONT_
|
V |
LV Battery Temp
VCFRONT_
|
degC |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a401.