DIR_a158 — Ibst MIA
Full alert identifier: DIR_a158_ibstMIA
Alert description
The drive interface (DI) electronic control unit (ECU) detects that the iBooster (IBST, or brake assist) controller area network (CAN) node is missing (MIA).
Potential impact
The DI ECU is unable to monitor the state of the IBST.
Set condition
The DI ECU is not receiving the expected CAN communication from the IBST, and considers it irrational or MIA.
Clear condition
The DI ECU receives the required CAN messages from the IBST.
Signals to check
These diagnostic fields are associated with DIR_a158. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
BUS 1 IBST Status
DIR_
|
— |
BUS 2 IBST Status
DIR_
|
— |
IBST Party 1
DIR_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DIR_a158.