VCFRONT_a549 — Force Hard Autopilot Load Shed

Full alert identifier: VCFRONT_a549_forceHardAutopilotLoadShed

Alert description

AP1 and AP2 have not reached the desired low power state within the allowed time during loadshed. Forcing power off of autopilots to preserve LV battery energy.

Potential impact

This information is not available in the alert reference.

Set condition

This information is not available in the alert reference.

Clear condition

This information is not available in the alert reference.

Signals to check

These diagnostic fields are associated with VCFRONT_a549. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
Turbo A Power State `VCFRONT_a549_turboAPowerState`	—
Turbo B Power State `VCFRONT_a549_turboBPowerState`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a549.

VCFRONT_a192 — Vehicle Load Shed VCFRONT_a192_vehicleLoadShed The low voltage (LV) battery is no longer supported by the power conversion system (PCS). The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs)
VCFRONT_a511 — DCDC Saturation Load Shed VCFRONT_a511_DCDCSaturationLoadShed Electrical current flowing through the power conversion system (PCS) eFuse is approaching the DCDC converter's maximum handling capacity. The front vehicle controller (VCFRONT) is shedding some vehicle electrical loads by cutting power to…
VCFRONT_a509 — Vcright eFuse Load Shed VCFRONT_a509_vcrightEFuseLoadShed Electrical current flowing through the right vehicle controller (VCRIGHT) eFuse has equaled or exceeded 100A. The VCRIGHT eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced. The front vehicle controll…
VCFRONT_a547 — Post Crash Load Shed VCFRONT_a547_postCrashLoadShed The vehicle controller is loadshedding due to a vehicle collision. Make sure the vehicle is safe to re-energize before using the Clear Post-Crash Loadshedding (PROC_VCFRONT_X_CLEAR-POST-CRASH-LOADSHEDDING) routine to resume all low voltage…
VCFRONT_a508 — Bridge eFuse Load Shed VCFRONT_a508_bridgeEFuseLoadShed Electrical current flowing through the Bridge eFuse has equaled or exceeded 120A. The Bridge eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced. The front vehicle controller (VCFRONT) is shedding some…

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Potential impact

Set condition

Clear condition

Signals to check

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