Alerts
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| Signal Name | Description | Condition | Impact |
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery power supply undervoltage event.
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LV supply voltage to DI (refer to lvSupply) is disconnected or drops below lower voltage threshold
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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The Drive Inverter (DIx) has detected an error communicating with the Serial Peripheral Interface (SPI), which monitors the pedal monitor.
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DIx has detected an error communicating with SPI, which monitors the pedal monitor. There may be a condition affecting SPI.
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DIx 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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The Drive Inverter (DIx) has detected a condition affecting functionality at the gate driver on Phase A.
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DIx has detected a condition affecting functionality at the gate driver on Phase A. View payload signal to confirm reason for alert.
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DIx may be inoperable.
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The Drive Inverter (DIx) has detected unexpected oil pressure from the oil pump.
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DIx has detected unexpected oil pressure from the oil pump. The oil pump may have a condition affecting functionality.
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Drive Unit thermal estimation and limits may be impacted and not function as expected. Torque production could be limited.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a Gateway configuration mismatch with the application currently running on the DI.
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Set if any of the checked gateway config is not as expected.
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The vehicle enters system limp mode and is unable to enter Drive.
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The Drive Inverter (DIx) has detected the capacitor is over temperature.
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DIx has detected the capacitor is over temperature. The pack contactors may have a condition affecting functionality.
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The flow of current between the capacitors and DIx may not function as expected.
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Drive Unit Graceful Power Off (GPO) has been triggered. The Drive Unit will lose current input from the High Voltage (HV) battery.
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Drive Unit GPO has been triggered. The Drive Unit will lose current input from the HV battery.
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The Drive Unit will ramp down all torque production. The Drive Unit may not function as expected.
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Drive Inverter Warning: Unit limp mode triggered.
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Abnormal condition detected within drive unit subsystem. Look at limpReason in alert for exact trigger.
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Drive system performance severely reduced (torque/power limited)
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Drive Inverter Warning: Loss of motor control.
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Motors are not responding to DI commands
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Unable to produce torque/power from drive unit
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The Left Secondary Vehicle Controller (VCLEFTS) node is Missing in Action (MIA) on Controller Area Network (CAN) for one or more messages.
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The VCLEFTS node is MIA on CAN for one or more messages. The VCLEFT node may have a condition affecting functionality.
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The Drive Unit may not operate as expected.
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Drive Inverter Warning: Motor control is out of regulation.
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Motor regulation fails to meet command inputs
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: HVLINK CAN node MIA.
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Any received HVLINK frame is MIA
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Active discharge may turn ON
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The drive interface (DI) electronic control unit (ECU) detects that the high voltage processor (HVP) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the expected CAN communication from the HVP, and considers it irrational or MIA.
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The DI ECU is unable to monitor the state of the HVP, and active discharge may turn on.
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The Drive Inverter (DIx) node is Missing in Action (MIA) on Controller Area Network (CAN) for one or more messages.
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The DIx node is MIA on CAN for one or more messages. The DIx node or DIx may have a condition affecting functionality.
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DIx may not be able to communicate with the High Voltage Processor (HVP).
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Drive Inverter Warning: High Speed Wear Counter Exceeded.
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Number of qualified high speed events above allowed threshold
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Silent alert to track mechanical wear
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The three Drive Inverter (DIx) heat sink sensors are not functioning. The DIx heat sink sensors monitor temperature in the motor and fluid port.
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The three DIx heat sink sensors are not functioning. The DIx heat sink sensors may have a condition affecting functionality.
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Since it cannot detect temperature as expected, DIx may limit power output to an operational level. Drive Unit performance may be impacted.
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The Drive Inverter (DIx) Electronic Control Unit (ECU) detects no phase current.
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The DIx ECU detects no phase current. The phase lugs, stator, rotor, or DIx may have a condition affecting functionality.
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Without phase current, DIx cannot produce motor torque to rotate the wheels. The vehicle's drive cycle may not function as expected, or at all.
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The Drive Inverter (DIx) Electrically Erasable Programmable Read-Only Memory (EEPROM) has reported phase sensor calibration is outside valid range.
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The DIx EEPROM has reported phase sensor calibration is outside valid range.
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This alert is primarily for logging purposes and appears in conjunction with other alerts.
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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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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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