DPB_a104 — Ecu Wd Startuptest Fault
Full alert identifier: DPB_a104_ecuWdStartuptestFault
Alert description
During failsafe logic test actual and expected WD status of System IC differ.
Potential impact
System will be running in fully degraded state. Braking may require increased effort. Hydraulic Boost Compensation will be triggered when driver pressed brake pedal.
Set condition
Erroneous safety logic within system chip or feedback of system chip is wrong. During failsafe logic test the watchdog status feedback from the system chip is tested against several patterns according to the ongoing sub test. If the watchdog status is not as expected this fault is logged.
Clear condition
No internal issue is detected after changing operation cycle. If the condition persists, the DPB module may require replacement.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of DPB_a104.