Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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This is an engineering diagnostic alert. It indicates that the software noticed something unexpected but still ended up in an expected state condition. If this alert persists, it may indicate an issue in the production code.
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An assertion in the software is false.
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This alert is primarily informational and is used for logging purposes.
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The battery management system (BMS) has detected that there is an over voltage event external to the high voltage (HV) battery.
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The BMS detects that the bus voltage is higher than maximum voltage threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that the negative contactor remains open during the first 2 seconds of pack contactors attempting to close.
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The BMS detects that the negative pack contactor is welded.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that the positive contactor remains open during the first 2 seconds of pack contactors attempting to close.
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The BMS detects that the positive pack contactor is welded or broken.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects an issue with the high voltage interlock loop (HVIL). The voltage at the HVIL output pin of the BMS is too low (in respect to the number of HVIL nodes the vehicle has) or too close to the HVIL open voltage.
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HVIL output voltage sensed by the BMS is outside of the expected bounds.
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Inability to charge, drive, or support the low voltage (LV) system
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There is an external or internal isolation alert while pack contactors are closed.
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The BMS detects that isolation is below the minimum threshold while contactors are closed.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that there is an isolation sensor error.
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The BMS runs into an abnormality during the isolation circuit test.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that there was loss of power to pack contactors while they are closed. The BMS assumes that the pyro fuse on the contactor power supply signal blew during a crash.
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The BMS detects that there is a loss of power to pack contactors while they are closed.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that bus voltage is not reducing quickly enough.
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The BMS detects that the DC link voltage has not discharged to below 60V within 5 seconds of opening the contactors.
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Power is reduced.
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The battery management system (BMS) has detected that pack contactors opened while under load.
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The battery contactors opened while under load.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) has detected that the HV battery precharge resistor is above the maximum operating temperature.
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The BMS detects that pack contactors have opened and closed too many times in a short period of time.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) has detected that the charge port door is open and the fast charge (FC) contactors are welded.
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The BMS detects that the charge port door is open and the FC contactors are welded.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) senses that the current sensor is undergoing a hard reset.
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The battery management system (BMS) detects that a hard reset begins.
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This alert is primarily informational and used for logging purposes.
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The battery management system (BMS) detects that the standard deviation of isolation resistance while in drive is high.
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The BMS detects that the standard deviation of the high voltage (HV) isolation is outside of the set threshold.
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This alert is primarily informational and indicates a potential isolation issue.
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The battery management system (BMS) detects that there was a repeated loss of isolation during drive.
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The BMS detects that isolation dropped multiple times below the minimum threshold while driving.
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The vehicle will not start.
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The battery management system (BMS) detects that pack contactors have been disabled.
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The BMS detects a condition that requires the contactors to stay open until they are serviced.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) has detected that the fast charge contactors opened under load.
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The battery management system (BMS) has detected that the fast charge contactors opened under load.
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This alert is primarily informational and is used for logging purposes.
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This alert is used as a counter to record the number of hardware overcurrents (HWOC) detected by the battery management system (BMS).
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The BMS detects that the contactors were opened under load because of a HWOC event.
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This alert is primarily informational and is used for logging purposes.
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The battery management system (BMS) has detected a software overcurrent event.
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The high voltage (HV) battery pack current (discharge or charge) exceeded the maximum limit.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) limits power because the pack current, pack voltage, or brick voltage, is outside of the expected bounds.
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The BMS detects that regen current, discharge current, pack voltage, or brick voltage is too high or too low. Alert log signal data provides information on the specific condition(s) detected.
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Inability to charge, drive, or support the low voltage (LV) system
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