VCFRONT_a120 — DI DRIVE MIA

Full alert identifier: VCFRONT_a120_DI_DRIVE_MIA

Alert description

One or more of the messages the vehicle controller receives periodically from the drive interface (DI) electronic control unit (ECU) is not received while the vehicle is in Drive, indicating the DI ECU may be unavailable (MIA).

Potential impact

Vehicle speed and power may be limited.

Set condition

One or more of the expected messages from the DI ECU is not received while the vehicle is in Drive.

Clear condition

The vehicle controller starts receiving the expected messages from the DI ECU while the vehicle is in Drive, or the vehicle is no longer in Drive.

Signals to check

These diagnostic fields are associated with VCFRONT_a120. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
BDY Speed `VCFRONT_a120_BDY_speed`	—
CH Chassis Cntl `VCFRONT_a120_CH_chassisCntl`	—
CH Loc Status 2 `VCFRONT_a120_CH_locStatus2`	—
CH Speed `VCFRONT_a120_CH_speed`	—
PARTY Aggregated Axle Speed `VCFRONT_a120_PARTY_aggregatedAxleSpeed`	—
PARTY Autonomy Health `VCFRONT_a120_PARTY_autonomyHealth`	—
PARTY Chassis Cntl `VCFRONT_a120_PARTY_chassisCntl`	—
PARTY Loc Status `VCFRONT_a120_PARTY_locStatus`	—

Show 25 more fields

Signal	Unit
PARTY Loc Status 2 `VCFRONT_a120_PARTY_locStatus2`	—
PARTY Motor Status `VCFRONT_a120_PARTY_motorStatus`	—
PARTY Prnd Control `VCFRONT_a120_PARTY_prndControl`	—
PARTY Speed `VCFRONT_a120_PARTY_speed`	—
PARTY Stalkless Interfaces `VCFRONT_a120_PARTY_stalklessInterfaces`	—
PARTY Status `VCFRONT_a120_PARTY_status`	—
PARTY System Status `VCFRONT_a120_PARTY_systemStatus`	—
PARTY Torque `VCFRONT_a120_PARTY_torque`	—
PARTY Vehicle Estimates `VCFRONT_a120_PARTY_vehicleEstimates`	—
PT Speed `VCFRONT_a120_PT_speed`	—
PT System Power `VCFRONT_a120_PT_systemPower`	—
PT System Status `VCFRONT_a120_PT_systemStatus`	—
VEH Aggregated Axle Speed `VCFRONT_a120_VEH_aggregatedAxleSpeed`	—
VEH Autonomy Health `VCFRONT_a120_VEH_autonomyHealth`	—
VEH Chassis Cntl `VCFRONT_a120_VEH_chassisCntl`	—
VEH Estimated Brake Temp `VCFRONT_a120_VEH_estimatedBrakeTemp`	—
VEH Loc Status `VCFRONT_a120_VEH_locStatus`	—
VEH Loc Status 2 `VCFRONT_a120_VEH_locStatus2`	—
VEH Motor Status `VCFRONT_a120_VEH_motorStatus`	—
VEH Prnd Control `VCFRONT_a120_VEH_prndControl`	—
VEH Speed `VCFRONT_a120_VEH_speed`	—
VEH System Power `VCFRONT_a120_VEH_systemPower`	—
VEH System Status `VCFRONT_a120_VEH_systemStatus`	—
VEH Torque `VCFRONT_a120_VEH_torque`	—
VEH Vehicle Estimates `VCFRONT_a120_VEH_vehicleEstimates`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a120.