VCTRAILER_a133 — DI MIA

Full alert identifier: VCTRAILER_a133_DI_MIA

Alert description

One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).

Potential impact

Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.

Set condition

One or more of the expected messages from the DIF ECU is not received.

Clear condition

The vehicle controller starts receiving the expected messages from the DIF ECU.

Signals to check

These diagnostic fields are associated with VCTRAILER_a133. Check the alert's Alert Log in Service Mode Plus for available values.

Signal	Unit
DIPR Trailer Brake Control `VCTRAILER_a133_DIPR_trailerBrakeControl`	—
EGGLEFTPRIV Offroad Status `VCTRAILER_a133_EGGLEFTPRIV_offroadStatus`	—
EGGLEFTPRIV System Limits `VCTRAILER_a133_EGGLEFTPRIV_systemLimits`	—
EGGREARPRIV System Limits `VCTRAILER_a133_EGGREARPRIV_systemLimits`	—
LOOP LV Health `VCTRAILER_a133_LOOP_LVHealth`	—
LOOP Liftgate Status `VCTRAILER_a133_LOOP_liftgateStatus`	—
LOOP System Limits `VCTRAILER_a133_LOOP_systemLimits`	—
LOOP Vehicle Estimates `VCTRAILER_a133_LOOP_vehicleEstimates`	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCTRAILER_a133.