Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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The external electrically erasable programmable read-only memory (EEPROM) is returning unexpected data over the serial peripheral interface (SPI).
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Invalid data received from external EEPROM over SPI.
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Analysis of trigger condition for a previous pyro disconnect event cannot be completed because EEPROM data is inaccessible.
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Secondary disconnect controller (SDC) detected abnormal electrical currents during a previous power-ON state. Data retrieved from electrically erasable programmable read-only memory (EEPROM).
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SDC detected abnormal electrical currents when drive inverter (DI) was not switching as expected during a previous power cycle.
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Drive unit may not be functional due to previous electrical issue.
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Secondary disconnect controller (SDC) triggered the 2-phase disconnect mechanism during a previous power ON state. Alert log signal data retrieved from electrically erasable programmable read-only memory (EEPROM) to be used for pyro disconnect trigger investigation afterward.
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SDC reads alert log signal data from EEPROM for a previous pyro disconnect event.
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Drive unit may not be functional due to previous pyro disconnect.
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The external analog to digital converter (ADC) is returning invalid data over the serial peripheral interface (SPI).
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Invalid data is received from the external ADC over SPI.
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Phase voltage sensing data is incorrect, which may affect pyro disconnect functionality.
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Secondary disconnect controller (SDC) phase voltage sensors are providing irrational values.
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At least one phase voltage measurement remains low while voltage should be constantly switching between low and high.
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Pyro disconnect may not function as expected.
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Secondary disconnect controller (SDC) detected abnormal motor currents.
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Detection of abnormal drive unit currents by the SDC when drive inverter (DI) is not switching.
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SDC may trigger the pyro disconnect.
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Secondary disconnect controller (SDC) HV bus voltage sensor is providing irrational values.
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HV bus voltage measurement is low while HV backup rail is up.
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Pyro disconnect may not function as expected.
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Stage allocation timed-out during the voltage matching part of the sequence.
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Voltage matching took too long to complete and stage allocation timed out.
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Stage will not connect to desired post, resulting in reduced power availability.
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Drive inverter (DI) switching-feedback (fdbk) pin to secondary disconnect controller (SDC) is in an irrational state.
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DI switching-feedback pin is set but DI running-feedback is cleared.
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Pyro disconnect may not function as expected.
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At least one message the Secondary Disconnect Controller (SDC) expects to receive from the vehicle gateway (GTW) is not received.
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At least one message from the GTW consumed by the SDC is not received.
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Timestamp for any ECULOG capturing internal SDC data will be inaccurate, which may complicate diagnosis.
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Secondary disconnect controller (SDC) bus bar temperature sensors providing irrational values.
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At least one SDC bus bar temperature sensor value is outside expected range.
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At least one bus bar temperature is unavailable, which may affect pyro disconnect functionality.
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The external electrically erasable programmable read-only memory (EEPROM) is returning unexpected data over the serial peripheral interface (SPI).
|
Invalid data received from external EEPROM over SPI.
|
Analysis of trigger condition for a previous pyro disconnect event cannot be completed because EEPROM data is inaccessible.
|
|
|
Secondary disconnect controller (SDC) detected abnormal electrical currents during a previous power-ON state. Data retrieved from electrically erasable programmable read-only memory (EEPROM).
|
SDC detected abnormal electrical currents when drive inverter (DI) was not switching as expected during a previous power cycle.
|
Drive unit may not be functional due to previous electrical issue.
|
|
|
Secondary disconnect controller (SDC) triggered the 2-phase disconnect mechanism during a previous power ON state. Alert log signal data retrieved from electrically erasable programmable read-only memory (EEPROM) to be used for pyro disconnect trigger investigation afterward.
|
SDC reads alert log signal data from EEPROM for a previous pyro disconnect event.
|
Drive unit may not be functional due to previous pyro disconnect.
|
|
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The external analog to digital converter (ADC) is returning invalid data over the serial peripheral interface (SPI).
|
Invalid data is received from the external ADC over SPI.
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Phase voltage sensing data is incorrect, which may affect pyro disconnect functionality.
|
|
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Secondary disconnect controller (SDC) phase voltage sensors are providing irrational values.
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At least one phase voltage measurement remains low while voltage should be constantly switching between low and high.
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Pyro disconnect may not function as expected.
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Secondary disconnect controller (SDC) HV bus voltage sensor is providing irrational values.
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HV bus voltage measurement is low while HV backup rail is up.
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Pyro disconnect may not function as expected.
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Secondary disconnect controller (SDC) HV backup rail voltage sensor is providing irrational values.
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HV backup rail voltage measured low while Power Good (PGOOD) hardware signal to SDC is asserted.
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Pyro disconnect may not function as expected.
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Secondary disconnect controller (SDC) boost rail voltage sensor is providing irrational values.
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SDC boost rail sensor reading is below operational value while HV backup rail voltage measurement (Vbackup) is at nominal value.
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Pyro disconnect may not function as expected.
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Secondary disconnect controller (SDC) reference voltage (Vref) for current sensor measurement is irrational, making SDC unable to monitor drive unit electrical state.
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SDC reference voltage (Vref) measurement is outside of expected range.
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Pyro disconnect may not function as expected.
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