PCS2REXA_a114 — Hv Bus Estimated Impedance Low
Full alert identifier: PCS2REXA_a114_hvBusEstimatedImpedanceLow
Alert description
The Power Conversion System (PCS) detects the estimated high voltage (HV) bus impedance is lower than the expected threshold.
Potential impact
The DCDC converter may not precharge the HV bus to its commanded voltage target, preventing HV battery pack contactors from closing.
Set condition
The estimated HV bus impedance is lower than the expected threshold.
Clear condition
The DCDC converter is commanded to shut down or receives a new request to precharge the HV bus.
Signals to check
These diagnostic fields are associated with PCS2REXA_a114. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
Estimated Hvbus Capacitance
PCS2REXA_
|
uF |
Estimated Resistance Linear
PCS2REXA_
|
ohm |
Estimated Resistance Logarithm
PCS2REXA_
|
ohm |
Use Linear Result
PCS2REXA_
|
— |
Use Logarithm Result
PCS2REXA_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS2REXA_a114.