PCS_a045 — Hv Bus Low Impedance
Full alert identifier: PCS_a045_hvBusLowImpedance
Alert description
PCS detects the HV bus impedance is lower than the expected value
Potential impact
Inability to precharge HV bus, inability to support 12V system, inability to drive
Set condition
DCDC converter detects low impedance on HV bus when precharging (short circuit or capacitance too high)
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 |
|---|---|
Hv Bus Estimated C U F
PCS_
|
uF |
Hv Bus Estimated R K Ohm
PCS_
|
kOhm |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of PCS_a045.