Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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The battery management system (BMS) detects that one or more temperature measurements are irrational.
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A thermistor reports a temperature that the BMS considers irrational.
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This alert is primarily informational.
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Negative contactor is expected to be open but the voltage match remains. Possible weld detected.
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Contactor state timed out of OPENING (and transitioned to AUX_MISMATCH) due to a weld not having been disqualified.
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The pyro fuse may be deployed.
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HVBATT cannot measure the temperature on any module in the battery pack.
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All temperature sensors in the battery pack are reporting faulty measurement readings.
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Inability to charge, drive, or support the low voltage (LV) system.
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Negative contactor is expected to be open but aux reports them as still closed.
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Contactor state timed out of the OPENING state (and transitioned to AUX_MISMATCH) due to aux reporting the contactor as still closed.
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Firmware will try to open the contactor again.
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Positive contactor is expected to be open but aux reports them as still closed.
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Contactor state timed out of the OPENING state (and transitioned to AUX_MISMATCH) due to aux reporting the contactor as still closed.
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Firmware will try to open the contactor again.
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Negative contactor was blocked from opening due to high current. Pyro deployed instead.
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High voltage current is too high while attempting to open the contactor.
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The negative pyro fuse will be deployed.
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Positive contactor was blocked from opening due to high current. Pyro deployed instead.
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High voltage current is too high while attempting to open the contactor.
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The positive pyro fuse will be deployed.
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High voltage isolation dropped under threshold in many drive sessions
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Isolation or isolation degradation alert is set many times
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Vehicle will be unable to restart
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The BMS has detected isolation failure conditions in several drive sessions
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Isolation or isolation degradation alert is set in several drive sessions
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Vehicle may be unable to restart
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A battery pack module temperature is above the fault temperature limit
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A battery pack module temperature is above the fault temperature limit for X duration (in seconds)
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Power/drive limits may be reduced
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The difference in pack voltage measurements of the ADC & BMBs exceeds the maximum limit.
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The difference in ADC & BMB pack voltage is greater than 3%
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The contactors may open immdediately or pyro disconnect may blow
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Warns if the Energy reserve voltage supply is below minimum voltage threshold
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The Energy reserve voltage supply is below minimum voltage threshold
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The pyro diagnostics may fail, the contactors will not close
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Alerts if PyroLeakTest pyro diagnostic has cross warning threshold
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PyroLeakTest sees an Aout outside of 15% tolerance when measuring leakage
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Customer Facing text to seek service immediately
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Warns if the shunt current reading is not avaialble
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The shunt current reading is not avaialble
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Current readings are not avaialble
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The PCS is MIA and the HVP is power cycling it in an attempt to recover it
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The VC indicates that the conditions have been met to power cycle and the HVP has detected no CAN activity from the PCS
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The PCS will be power cycled and temporarily no longer support the LV system
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Warns if the CP node is mia on HVS CAN
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The CP node is mia on HVS CAN
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CAN messages are not received from CP node
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Warns if the BMS node is mia on HVI CAN
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The BMS node is mia on HVI CAN
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CAN messages are not received from BMS or other nodes on vehicle
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A communication interruption has been detected in the Battery Monitoring Board (BMB) chain
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A communication issue with the BMB daisy chain is detected
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May indicate a loss of BMB sensor data
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Data integrity loss due to Battery Monitoring Board (BMB) chain double break
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A prolonged communication issue with the BMB daisy chain that is known to cause a loss of BMB sensor data is detected
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BMB sensor data is likely being substituted to replace data missing due to the communication issue
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A brick voltage is below minimum voltage limit
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A brick voltage is below minimum voltage limit for X duration (in seconds)
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The conactors may open immdediately or pyro fuse may blow
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