Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
|
Secondary disconnect controller (SDC) triggered the 2-phase disconnect mechanism.
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SDC detects abnormal electrical condition.
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Drive unit may be permanently disabled after 2-phase disconnect occurs.
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No
|
|
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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.
|
No
|
|
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HVLINK messages are not being received by secondary disconnect controller (SDC).
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At least one message from HVLINK consumed by SDC is not received.
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Active discharge control by SDC may be forced ON.
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No
|
|
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Universal asynchronous receiver-transmitter (UART) data version differs between drive inverter (DI) and secondary disconnect controller (SDC).
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UART data version detected as differing between DI and SDC.
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Unable to run pyro self-test.
|
No
|
|
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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.
|
No
|
|
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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.
|
No
|
|
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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.
|
No
|
|
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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.
|
Pyro disconnect may not function as expected.
|
No
|
|
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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.
|
Pyro disconnect may not function as expected.
|
No
|
|
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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.
|
No
|
|
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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.
|
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.
|
No
|
|
|
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.
|
No
|
|
|
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.
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Analysis of trigger condition for a previous pyro disconnect event cannot be completed because EEPROM data is inaccessible.
|
No
|
|
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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.
|
No
|
|
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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.
|
No
|
|
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Drive inverter (DI) switching-feedback (fdbk) pin to secondary disconnect controller (SDC) is in an irrational state.
|
DI switching-feedback pin is set but DI running-feedback is cleared.
|
Pyro disconnect may not function as expected.
|
No
|
|
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One or more of the messages the vehicle controller receives periodically from the Primary Electric Power Steering (PEPS) electronic control unit (ECU) is not received, indicating the PEPS ECU may be unavailable (MIA).
|
One or more of the expected messages from the PEPS ECU is not received.
|
Power steering may be limited or unavailable.
|
No
|
|
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SCCM detected inplausible gear angle
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The difference between the expected gear 1 angle derived from gear 2 angle and actual gear 1 angle is greater than or equal to 7 deg
|
SCCM may not operate as expected.
|
No
|
|
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Steering Column Control Module (SCCM) detected a steering stalk module memory error.
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SCCM detected a steering stalk module memory error.
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Alert is primarily informational and used for logging purposes.
|
No
|
|
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Steering Column Control Module (SCCM) steering stalk module hardware error detected.
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SCCM steering stalk module hardware error detected.
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SCCM may not operate as expected.
|
No
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