USM_a118 — VCFRONT MIA
Full alert identifier: USM_a118_VCFRONT_MIA
Alert description
One or more of the messages the vehicle controller receives periodically from the front vehicle controller (VCFRONT) is not received, indicating the VCFRONT may be unavailable (MIA).
Potential impact
Vehicle functions that depend on the VCFRONT may be unavailable or may not function as expected.
Set condition
The vehicle controller does not receive one or more of the expected messages from the VCFRONT within the expected time frame.
Clear condition
The vehicle controller starts receiving the expected messages from the VCFRONT.
Signals to check
These diagnostic fields are associated with USM_a118. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
BDY AP Vehicle State 1 Hz Muxed
USM_
|
— |
BDY Output Power Status
USM_
|
— |
BDY Vehicle Time
USM_
|
— |
CH 12 V Battery Status
USM_
|
— |
CH LVBMS Status High
USM_
|
— |
CH LV Power State
USM_
|
— |
CH Alert Matrix
USM_
|
— |
CH Lighting
USM_
|
— |
Show 21 more fields
| Signal | Unit |
|---|---|
CH Sensors
USM_
|
— |
PARTY AP Vehicle State 1 Hz Muxed
USM_
|
— |
PARTY LV Power State
USM_
|
— |
PARTY VCFRONT Camera Cleaning Status
USM_
|
— |
PARTY Output Power Status
USM_
|
— |
PARTY Sensors
USM_
|
— |
PARTY Veh Nm
USM_
|
— |
PARTY Vehicle Time
USM_
|
— |
VEH 12 V Battery Status
USM_
|
— |
VEH LV Power State
USM_
|
— |
VEH Coolant
USM_
|
— |
VEH Inter Node Resistance
USM_
|
— |
VEH Light Status
USM_
|
— |
VEH Lighting
USM_
|
— |
VEH Ok To Use High Pwr
USM_
|
— |
VEH Sensors
USM_
|
— |
VEH Status
USM_
|
— |
VEH System Status
USM_
|
— |
VEH Thermal Command
USM_
|
— |
VEH Veh Nm
USM_
|
— |
VEH Vehicle Status
USM_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of USM_a118.