PCS_a093 — Power Rail Rationality
Full alert identifier: PCS_a093_powerRailRationality
Alert description
PCS detects one of its logical power rail's measurement becomes irrational
Potential impact
Inability to precharge HV bus, inability to support 12V system, inability to AC charge, inability to drive
Set condition
Power conversion system detects that a logical power rail voltage is outside expected range for more than one second
Clear condition
Power conversion system detects that all logical power rail voltages are within expected range for more than one second
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 |
|---|---|
Power Rail 1 V 2
PCS_
|
V |
Power Rail 1 V 5
PCS_
|
V |
Power Rail 3 V 3
PCS_
|
V |
Power Rail 5 VN
PCS_
|
V |
| Signal | Unit |
|---|---|
Irrational 1 V 2 Rail
PCS_
|
— |
Irrational 1 V 5 Rail
PCS_
|
— |
Irrational 3 V 3 Rail
PCS_
|
— |
Irrational 5 VN Rail
PCS_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS_a093.