PCS2_a114 — Hv Bus Estimated Impedance Low
Full alert identifier: PCS2_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
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 |
|---|---|
Estimated Hvbus Capacitance
PCS2_
|
uF |
Estimated Resistance Linear
PCS2_
|
ohm |
Estimated Resistance Logarithm
PCS2_
|
ohm |
| Signal | Unit |
|---|---|
Use Linear Result
PCS2_
|
— |
Use Logarithm Result
PCS2_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS2_a114.