DPB_a103 — Ecu Vr Via Spi Fails
Full alert identifier: DPB_a103_ecuVrViaSpiFails
Alert description
The valve relay cannot be switched off via the SPI command of the system IC.
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
System chip does not switch off the valve relay gate actuation via SPI or the feedback bit does report a wrong status, The failsafe logic test tests whether the system chip can switch off the gate actuation of the valve relay via SPI command. If the feedback does not show a switched off valve relay gate this fault is set.
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_a103.