Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.
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The Drive Unit is not able to transition to Drive state. There may be a condition preventing the Drive Unit from transitioning states.
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The Drive Unit may not function as expected, including a reduction in vehicle power. The vehicle's drive cycle may not function as expected, or at all.
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No
|
|
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The Drive Inverter (DIx) has detected an error communicating with the Field Programmable Gate Array (FPGA).
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DIx has detected an error communicating with FPGA. There may be a condition affecting the DIx control board functionality.
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The DIx Gate Drive Unit may not be able to receive data from the Pedal Monitor. The vehicle's drive cycle may not function as expected.
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No
|
|
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Drive Inverter Warning: Low flow rate of fluid.
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Insufficient cooling to the drive inverter is detected
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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No
|
|
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The Drive Inverter (DIx) has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.
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The DIx has detected a DIx thread executing later than expected. The DIx CPU may be diverting resources towards other tasks.
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This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
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No
|
|
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The Drive Interface (DI) detects the at-speed recovery mechanism encountered an error.
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The DI detects the at-speed recovery mechanism encounters an error affecting its functionality. Alert log signal data provides information on the specific condition(s) detected.
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The vehicle may lose propulsion.
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No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an electrically erasable programmable read-only memory (EEPROM) read/write access error. Check for other alerts that may be set as a result.
|
There are read/write issues to EEPROM.
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The DI is not able to store any record in EEPROM where the error is located, which impacts functionality on the next boot up.
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No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference above the upper rational bound.
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Any ADC channel reference is above the maximum rational value.
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The vehicle is blocked from shifting out of Park.
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No
|
|
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Drive Inverter Warning: Active discharge is on but bus voltage remains high.
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Bus voltage is high while active discharge is ON
|
Potentially exposed high voltage
|
No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a memory check error.
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The bootloader cyclic redundancy check (CRC) or application CRC is not expected, or the RAM constants do not match with initialization segment in flash.
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The DI processor may reset, and other functionality may be impacted due to memory corruption.
|
No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the high voltage (HV) battery management system (BMS) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the BMS, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the BMS.
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No
|
|
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Drive Inverter Warning: Phase A peak over current detected in hardware
|
Not Available
|
Not Available
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No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the gateway (GTW) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the GTW, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the GTW.
|
No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects that the pedal monitor (PM) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the PM, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the PM.
|
No
|
|
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Drive Inverter Warning: EBS CAN node MIA.
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DI is not receiving required feedback CAN messages from EBS
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Unable to monitor EBS state
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No
|
|
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The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected an overcurrent event (or peak) in Phase B.
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The DIx ECU has detected a peak in Phase B.
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DIx may be inoperable.
|
No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery undervoltage event.
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LV supply voltage to DI is disconnected or drops below lower voltage threshold.
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The DI ECU triggers limp mode (see separate limpMode alerts) and cannot produce torque or power.
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No
|
|
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Drive Inverter Warning: Battery over voltage detected in hardware.
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HV bus voltage exceeds set upper voltage threshold
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Unable to produce torque/power from drive unit
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No
|
|
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a 5V supply is under voltage.
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The FPGA detects a 5V supply regulator PGOOD is not working as expected.
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Readings from 5V sensors may become erratic.
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No
|
|
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The Switch Off Path Test (SOPT) for Drive Unit has failed. The pathway between Drive Inverter (DIx) and Pedal Monitor (PM) torque measurements are different.
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The Switch Off Path Test (SOPT) for Drive Unit has failed. The DIx and PM torque measurements are different. The pathway between DIx and PM may have a condition affecting functionality.
|
PM may not be able to shut down torque produced by Drive Unit.
|
No
|
|
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The Drive Inverter (DIx) Electronic Control Unit (ECU) has detected an overcurrent event (or peak) in Phase A.
|
The DIx ECU has detected a peak in Phase A.
|
DIx may be inoperable.
|
No
|