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 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.
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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
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Potentially exposed high voltage
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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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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects an analog-to-digital converter (ADC) channel reference below the lower rational bound.
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Any ADC channel reference is below the minimum rational value.
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The vehicle is blocked from shifting out of Park.
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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 interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery overvoltage event.
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LV supply voltage to DI exceeds the set upper voltage limit.
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No immediate impact. Could damage drive inverter LV hardware if LV is continuously too high.
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The motor speed measured by the Drive Unit resolver does not match the Anti-lock Braking System (ABS) wheel speed sensors.
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The motor speed measured by the Drive Unit resolver does not match the ABS wheel speed sensors. There may be a condition affecting the functionality of the Drive Unit or wiring.
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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 Unit resolver (motor speed sensor) has detected the motor exceeding typical speed.
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The Drive Unit resolver has detected the motor exceeding typical speed. The rotor or rotor shaft may have a condition affecting functionality.
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The motor is exceeding typical speed. The motor and Drive Unit may not function as expected.
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The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor.
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The phase gate drive has detected four fault related signals from the induction motor or ten from the magnet motor. The induction motor or magnet motor may have a condition affecting functionality.
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The phase gate drive fault counter may block any power stage from enabling. The drive unit may not function as expected.
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The rotor's temperature is too hot, limiting Drive Inverter (DIx) motor torque production.
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The rotor's temperature is too hot, limiting DIx motor torque production. There may be a condition affecting DIx or the motor.
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The DIx motor may not produce torque as expected. The Drive Unit may not operate as expected.
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The torque production safety monitor has detected excess torque production and inhibited Drive Inverter (DIx) torque production for the remainder of the drive cycle.
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The torque production safety monitor has detected excess torque production and inhibited DIx torque production for the remainder of the drive cycle.
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The torque production safety monitor will inhibit torque and excess heat production for the remainder of the drive cycle.
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One or more of the messages the Drive Inverter Front (DIF) Electronic Control Unit (ECU) receives periodically from the Decoupled Brake Booster (BB) ECU is not received, indicating the BB ECU may be unavailable (MIA).
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One or more of the expected messages from the BB ECU is not received.
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Drive system may not function as expected.
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The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a condition that requires it to trigger system limp mode.
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The DI ECU detects abnormal operation in the powertrain system. Alert log signal data provides information on the specific condition(s) detected.
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The performance (torque and power of the drive system) is severely limited.
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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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The drive interface (DI) electronic control unit (ECU) detects that the rear drive interface (DIR) controller area network (CAN) node is missing (MIA).
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The DI ECU is not receiving the required feedback CAN messages from the DIR.
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The DI ECU is unable to monitor the state of the DIR.
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Drive Inverter Warning: No Stator sensor available.
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All stator sensors are giving abnormal measurements
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Drive unit enters unit limp mode (see DI_a126_limpMode)
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Drive Inverter Warning: Stator sensor 1 bad.
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Abnormal temperature measurements from stator sensor 1
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Stator sensor 2 will be used instead (if available)
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Drive Inverter Warning: Stator over temperature.
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Stator temperature exceeds upper temperature threshold
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No direct impact. Could damage drive unit if temperature is continuously too high.
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Drive Inverter Warning: Outlet sensor bad.
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Abnormal temperature measurements from DI coolant outlet sensor
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Unable to monitor DI coolant outlet sensor temperature
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Drive Inverter Warning: Outlet under temperature.
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DI coolant outlet temperature (refer to outletTemp) drops below lower temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too low.
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