HVP_w068 — Shunt Unexpected Thermistor

Full alert identifier: HVP_w068_shuntUnexpectedThermistor

Alert description

The High Voltage Processor (HVP) detects the shunt thermistor is present when the HVP calibration block has shunt Temperature Coefficients of Resistance (TCRs) for a shunt without a thermistor.

Potential impact

The High Voltage Controller (HVC) will measure the pack current less accurately affecting algorithms such as pack energy estimation. No immediate vehicle functional impact.

Set condition

A shunt thermistor is detected when the shunt TCRs in the HVP calibration block indicate a shunt thermistor should not be present.

Clear condition

The shunt TCRs programmed into the HVP calibration block indicate the shunt should have a thermistor.

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
Energy Reserve V `HVP_a068_energyReserveV` 65535 SNA	V
Shunt Current `HVP_a068_shuntCurrent` -32768 SNA	A
Shunt Temperature `HVP_a068_shuntTemperature` -32768 SNA	C

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of HVP_w068.