VCBATT_a548 — HV Fault Load Shed

Full alert identifier: VCBATT_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 `VCBATT_a548_LVBMSSOC`	%
PCS Target Voltage `VCBATT_a548_PCSTargetVoltage`	V
Amp Hour Bucket Count `VCBATT_a548_ampHourBucketCount`	Ah
Backstop Bucket Count `VCBATT_a548_backstopBucketCount`	Ah

Signal	Unit
Bms mia `VCBATT_a548_BMS_MIA`	—
DI Gear `VCBATT_a548_DI_gear` 0 INVALID 1 P 2 R 3 N 4 D 7 SNA	—
HV Blocking Mismatch `VCBATT_a548_HVBlockingMismatch`	—
HV Not Confirmed Up Trigger `VCBATT_a548_HVNotConfirmedUpTrigger`	—
LV Battery Cannot Support Vehicle `VCBATT_a548_LVBatteryCannotSupportVehicle`	—
PCSMIA Trigger `VCBATT_a548_PCSMIATrigger`	—
PCS Not Meeting Target Trigger `VCBATT_a548_PCSNotMeetingTargetTrigger`	—
PCS Saturated Trigger `VCBATT_a548_PCSSaturatedTrigger`	—

Show 8 more fields

Signal	Unit
Pcs mia `VCBATT_a548_PCS_MIA`	—
Amp Hour Bucket Filled `VCBATT_a548_ampHourBucketFilled`	—
Backstop Hit `VCBATT_a548_backstopHit`	—
Frunk Open `VCBATT_a548_frunkOpen`	—
Hv State `VCBATT_a548_hvState` 0 DOWN 1 COMING UP 2 GOING DOWN 3 UP FOR DRIVE 4 UP FOR CHARGE 5 UP FOR DC CHARGE 6 UP	—
Not Enough Power For Support `VCBATT_a548_notEnoughPowerForSupport`	—
Service Mode `VCBATT_a548_serviceMode`	—
Vehicle Power State `VCBATT_a548_vehiclePowerState` 0 OFF 1 CONDITIONING 2 ACCESSORY 3 DRIVE	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCBATT_a548.