USM_a094 — EPAS3P MIA
Full alert identifier: USM_a094_EPAS3P_MIA
Alert description
One or more of the messages the vehicle controller receives periodically from the Primary Electronic Power-Assisted Steering (EPAS3P) electronic control unit (ECU) is not received, indicating the EPAS3P ECU may be unavailable (MIA).
Potential impact
Vehicle functions that depend on the EPAS3P may be unavailable or may not function as expected.
Set condition
One or more of the expected messages from the EPAS3P ECU is not received.
Clear condition
The vehicle controller starts receiving the expected messages from the EPAS3P ECU.
Signals to check
These diagnostic fields are associated with USM_a094. Check the alert's Payload in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
PARTY Sys Status
USM_
|
— |
VEH Sys 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_a094.