VCFRONT_a548 — HV Fault Load Shed
Full alert identifier: VCFRONT_a548_HVFaultLoadShed
Alert description
The low voltage (LV) battery is discharging, even though high voltage (HV) system support has been requested. Vehicle loadshedding will occur, and a separate alert will be present to indicate that condition.
Potential impact
Vehicle loadshedding is triggered, and a separate alert will be present to indicate that condition and its impacts.
Set condition
LV battery is being discharged, even though the HV system should be supporting both the LV battery and the LV bus.
Clear condition
LV battery becomes supported again by the HV system.
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 |
|---|---|
Lvbmssoc
VCFRONT_
|
% |
PCS Target Voltage
VCFRONT_
|
V |
Amp Hour Bucket Count
VCFRONT_
|
Ah |
Backstop Bucket Count
VCFRONT_
|
Ah |
| Signal | Unit |
|---|---|
Bms mia
VCFRONT_
|
— |
DI Gear
VCFRONT_
|
— |
HV Blocking Mismatch
VCFRONT_
|
— |
HV Not Confirmed Up Trigger
VCFRONT_
|
— |
LV Battery Cannot Support Vehicle
VCFRONT_
|
— |
PCSMIA Trigger
VCFRONT_
|
— |
PCS Not Meeting Target Trigger
VCFRONT_
|
— |
PCS Saturated Trigger
VCFRONT_
|
— |
Show 8 more fields
| Signal | Unit |
|---|---|
Pcs mia
VCFRONT_
|
— |
Amp Hour Bucket Filled
VCFRONT_
|
— |
Backstop Hit
VCFRONT_
|
— |
Frunk Open
VCFRONT_
|
— |
Hv State
VCFRONT_
|
— |
Not Enough Power For Support
VCFRONT_
|
— |
Service Mode
VCFRONT_
|
— |
Vehicle Power State
VCFRONT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a548.