HVP_w040 — Fc Contactor Fell Open

Full alert identifier: HVP_w040_FcContactorFellOpen

Alert description

The High Voltage Processor (HVP) has detected a Fast Charge (FC) contactor has opened during a closed state.

Potential impact

The FC contactors will open. The vehicle may not be able to DC charge. The current charging session may be unexpectedly terminated as the FC contactors open.

Set condition

The HVP has detected a voltage drop across the FC contactor, low contactor coil FC current, and the auxiliary switch is open. This indicates a FC contactor has opened despite being in a closed state.

Clear condition

The HVP detects the FC contactor state as open.

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
Coil Current `HVP_a040_coilCurrent`	A
Neg Ctr Voltage Drop `HVP_a040_negCtrVoltageDrop`	V
Pos Ctr Voltage Drop `HVP_a040_posCtrVoltageDrop`	V
Power Voltage `HVP_a040_powerVoltage`	V

Signal	Unit
Neg Ctr Aux Open `HVP_a040_negCtrAuxOpen`	—
Pos Ctr Aux Open `HVP_a040_posCtrAuxOpen`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of HVP_w040.