CMPT_a100 — CA Nbus MIA
Full alert identifier: CMPT_a100_CANbus_MIA
Alert description
More than half of the ECUs on a either the VEH or PARTY bus are missing more than half their messages while the bus should be active
Potential impact
Vehicle functionality may be degraded.
Set condition
If 50% or more of the ECUs the local ECUs listens to are MIA, and the local ECU receives from more than 3 ECUs on this bus. An ECU is MIA if more than 50% of its messages are MIA and that ECU is considered CAN active (see specific ECU's MIA alert for CAN active conditions).
Clear condition
setCondition is no longer true.
Signals to check
These diagnostic fields are associated with CMPT_a100. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Ch
CMPT_
|
— |
Party
CMPT_
|
— |
Pt
CMPT_
|
— |
Thermal
CMPT_
|
— |
Veh
CMPT_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of CMPT_a100.