VCSEC_a120 — DI DRIVE MIA
Full alert identifier: VCSEC_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 VCSEC_a120. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
CH Chassis Cntl
VCSEC_
|
— |
CH Speed
VCSEC_
|
— |
PARTY Aggregated Axle Speed
VCSEC_
|
— |
PARTY Chassis Cntl
VCSEC_
|
— |
PARTY Loc Status
VCSEC_
|
— |
PARTY Loc Status 2
VCSEC_
|
— |
PARTY Prnd Control
VCSEC_
|
— |
PARTY Speed
VCSEC_
|
— |
Show 19 more fields
| Signal | Unit |
|---|---|
PARTY Stalkless Interfaces
VCSEC_
|
— |
PARTY Status
VCSEC_
|
— |
PARTY System Status
VCSEC_
|
— |
PARTY Torque
VCSEC_
|
— |
PARTY Vehicle Estimates
VCSEC_
|
— |
PT Speed
VCSEC_
|
— |
PT System Power
VCSEC_
|
— |
PT System Status
VCSEC_
|
— |
VEH Aggregated Axle Speed
VCSEC_
|
— |
VEH Chassis Cntl
VCSEC_
|
— |
VEH Estimated Brake Temp
VCSEC_
|
— |
VEH Loc Status
VCSEC_
|
— |
VEH Loc Status 2
VCSEC_
|
— |
VEH Prnd Control
VCSEC_
|
— |
VEH Speed
VCSEC_
|
— |
VEH System Power
VCSEC_
|
— |
VEH System Status
VCSEC_
|
— |
VEH Torque
VCSEC_
|
— |
VEH Vehicle Estimates
VCSEC_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCSEC_a120.