PCS_a043 — Hv Bus Precharge Failure
Full alert identifier: PCS_a043_hvBusPrechargeFailure
Alert description
PCS DCDC failed to precharge HV bus to the target voltage
Potential impact
Inability to precharge HV bus, inability to support 12V system, inability to drive
Set condition
DCDC converter was unable to precharge HV bus when commanded to
Clear condition
DCDC converter state machine clears faults
Signals to check
Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.
| Signal | Unit |
|---|---|
Dcdc Hv Bus V
PCS_
|
V |
Dcdc Lv Bus V
PCS_
|
V |
Hv Precharge Target V
PCS_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS_a043.