VCFRONT_a127 — Vcleft eFuse Trip

Full alert identifier: VCFRONT_a127_vcleftEFuseTrip

Alert description

The front vehicle controller (VCFRONT) has opened the low voltage (LV) power feed circuit (eFuse) to the left vehicle controller (VCLEFT), interrupting power supply to VCLEFT.

Potential impact

Functions on the left side of the vehicle may be limited or unavailable.

Set condition

VCFRONT detects the eFuse circuit gating low voltage (LV) power feed to VCLEFT as open (tripped).

Clear condition

VCFRONT no longer detects the eFuse circuit gating low voltage (LV) power feed to VCLEFT 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

These diagnostic fields are associated with VCFRONT_a127. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
Vcleft E Fuse Current `VCFRONT_a127_vcleftEFuseCurrent`	A
Vcleft E Fuse Remaining Retries `VCFRONT_a127_vcleftEFuseRemainingRetries`	—
Vcleft E Fuse Temp `VCFRONT_a127_vcleftEFuseTemp`	degC
Vcleft E Fuse Voltage `VCFRONT_a127_vcleftEFuseVoltage`	V

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a127.