VCFRONT1_a120 — DI DRIVE MIA

Full alert identifier: VCFRONT1_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 VCFRONT1_a120. Check the alert's Payload in Service Mode Plus for available values.

Signal	Unit
BATTIPC Chassis Control 2 `VCFRONT1_a120_BATTIPC_chassisControl2`	—
BATTIPC Odometer Status `VCFRONT1_a120_BATTIPC_odometerStatus`	—
BATTIPC Speed `VCFRONT1_a120_BATTIPC_speed`	—
BATTIPC System Status `VCFRONT1_a120_BATTIPC_systemStatus`	—
FRONTIPC Autonomy Health `VCFRONT1_a120_FRONTIPC_autonomyHealth`	—
FRONTIPC Chassis Control 2 `VCFRONT1_a120_FRONTIPC_chassisControl2`	—
FRONTIPC Odometer Status `VCFRONT1_a120_FRONTIPC_odometerStatus`	—
FRONTIPC Speed `VCFRONT1_a120_FRONTIPC_speed`	—

Show 2 more fields

Signal	Unit
FRONTIPC System Power `VCFRONT1_a120_FRONTIPC_systemPower`	—
FRONTIPC System Status `VCFRONT1_a120_FRONTIPC_systemStatus`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT1_a120.