VCFRONT_a477 — Dif eFuse Fault
Full alert identifier: VCFRONT_a477_difEFuseFault
Alert description
The front vehicle controller (VCFRONT) detects the front drive inverter (DIF) eFuse has tripped (circuit opened), interrupting electrical power supply to the DIF. Powertrain performance may be limited.
Potential impact
Powertrain performance may be limited.
Set condition
The VCFRONT detects the eFuse circuit gating low voltage (LV) power to the DIF as open (tripped).
Clear condition
The VCFRONT no longer detects the DIF eFuse as open (tripped) after a retry or sleep cycle, or the vehicle enters a state where the eFuse is expected to be open (off).
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 |
|---|---|
Dif E Fuse Current
VCFRONT_
|
A |
Dif E Fuse Temp
VCFRONT_
|
degC |
Dif E Fuse Voltage
VCFRONT_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a477.