DPB_a091 — MRG Path Test Fault
Full alert identifier: DPB_a091_MRGPathTestFault
Alert description
The control over MRG via EN_HY or MRAUC or both does not work.
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
MRG is either always switched ON or Not able to Switch OFF when Hydraulic Enable or MRA control is pulled LOW.
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_a091.