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 Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
CH Chassis Cntl
VCFRONT_
|
— |
CH Speed
VCFRONT_
|
— |
PARTY Aggregated Axle Speed
VCFRONT_
|
— |
PARTY Chassis Cntl
VCFRONT_
|
— |
PARTY Loc Status
VCFRONT_
|
— |
PARTY Loc Status 2
VCFRONT_
|
— |
PARTY Prnd Control
VCFRONT_
|
— |
PARTY Speed
VCFRONT_
|
— |
Show 19 more fields
| Signal | Unit |
|---|---|
PARTY Stalkless Interfaces
VCFRONT_
|
— |
PARTY Status
VCFRONT_
|
— |
PARTY System Status
VCFRONT_
|
— |
PARTY Torque
VCFRONT_
|
— |
PARTY Vehicle Estimates
VCFRONT_
|
— |
PT Speed
VCFRONT_
|
— |
PT System Power
VCFRONT_
|
— |
PT System Status
VCFRONT_
|
— |
VEH Aggregated Axle Speed
VCFRONT_
|
— |
VEH Chassis Cntl
VCFRONT_
|
— |
VEH Estimated Brake Temp
VCFRONT_
|
— |
VEH Loc Status
VCFRONT_
|
— |
VEH Loc Status 2
VCFRONT_
|
— |
VEH Prnd Control
VCFRONT_
|
— |
VEH Speed
VCFRONT_
|
— |
VEH System Power
VCFRONT_
|
— |
VEH System Status
VCFRONT_
|
— |
VEH Torque
VCFRONT_
|
— |
VEH Vehicle Estimates
VCFRONT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCFRONT_a120.