VCFRONT_a498 — PCS eFuse OVT Load Shed
Full alert identifier: VCFRONT_a498_PCSEFuseOVTLoadShed
Alert description
The front vehicle controller (VCFRONT) detects the power conversion system (PCS) eFuse has exceeded 133 degrees C. The PCS eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced to 175A or less. VCFRONT is shedding some vehicle electrical loads by cutting power to less essential electronic control units (ECUs).
Potential impact
Some convenience features will be unavailable as VCFRONT limits LV electrical system current draw by cutting power to some electronic control units (ECUs).
Set condition
The PCS eFuse temperature is detected as greater than 133 degrees C for 500 milliseconds.
Clear condition
The PCS eFuse temperature remains below 133 degrees C long enough for VCFRONT to stop loadshedding (until PCS eFuse Loadshed Stage is MIN).
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 |
|---|---|
PCSE Fuse Current
VCFRONT_
|
A |
Ambient 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_a498.