USM_a119 — SCCM MIA
Full alert identifier: USM_a119_SCCM_MIA
Alert description
One or more of the messages the vehicle controller receives periodically from the Steering Column Control Module (SCCM) is not received, indicating the SCCM may be unavailable (MIA).
Potential impact
Vehicle may be unable to shift between drive modes.
Set condition
One or more of the expected messages from the SCCM is not received.
Clear condition
The vehicle controller starts receiving the expected messages from the SCCM.
Signals to check
These diagnostic fields are associated with USM_a119. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
CH Steer Angle
USM_
|
— |
PARTY Right Stalk
USM_
|
— |
PARTY Steer Angle
USM_
|
— |
VEH Left Stalk
USM_
|
— |
VEH Right Stalk
USM_
|
— |
VEH Steer Angle
USM_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of USM_a119.