Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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Pressure sensor in C1 or C2 is out of range.
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Decreased brake activity
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Power supply error.
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No electronic governing or regeneration available, Yellow Warning lamp active
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Regeneration valve short circuit or external excitation.
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-
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Open/short circuit of regeneration valve.
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No regeneration
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Valve high side shorted to battery.
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-
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Valve high side open circuit.
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No valve actuation
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Governing valve short circuit or external excitation.
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No electronic governing
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Internal hardware failure occurred.
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No electronic governing or regeneration, no pressure information, possible damage of pneumatic components
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Electric compressor speed over CAN is missing.
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-
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Dataset not configured.
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-
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Compressor usage above normal.
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Possible leak in system and insufficient air dryer regeneration
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Circuit 1 reached max pressure level.
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No electronic governing or regeneration available, diagnostic available
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Low pressure warning for circuit 1.
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May not be able to unpark and reduced service brake capability
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Circuit 1 has defect.
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Decreased brake capability
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An imbalance in the State of Charge (SOC) of the High Voltage (HV) battery has exceeded the warning threshold.
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The estimated imbalance between average SOC and minimum SOC is greater than the alert threshold
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Indication that SOC imbalance is increasing. Maximum range and charge will be reduced if imbalance continues to increase.
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The battery management system (BMS) detects a possible state of charge (SOC) imbalance.
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The BMS detects that the difference between the most-charged brick and the least-charge brick in the high voltage (HV) pack is greater than the acceptable threshold.
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Maximum SOC is reduced to 50%.
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A bleed Field-Effect Transistor (FET) on the Battery Management Board (BMB) is not operating as designed. This will prevent the battery from balancing the brick by decreasing the brick voltage.
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Upon a periodic wake, after an ECU reset, or every 6 hours, the Battery Management System (BMS) will test all bleed switches by switching them on in turn. If the sensed brick voltage does not significantly change, this alert is set.
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There may be a decrease in available energy to the vehicle, reducing range and LV support.
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The battery management system (BMS) has detected a high voltage sense harness (VSH) impedance.
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The BMS detects a VSH impedance value above the threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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High impedance was detected on one or more bricks.
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Impedance for one or more bricks exceeds the noise threshold for several measurement counts.
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One or more cells in a brick are likely missing, resulting in a high impedance current path. Other potential causes are a high Direct Current Resistance (DCR), intermittent anode laser weld on the given brick(s), or an islanded brick.
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A State of Charge (SOC) correction of greater than 3% in the Battery Pack occurred during the previous resting period.
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The battery management system (BMS) updated the high voltage (HV) battery State of Charge (SOC) by more than 3% while the vehicle rested.
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Significant change in displayed range (range variation) while the vehicle was not used.
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