Alerts
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| Signal Name | Description | Condition | Impact |
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The Drive Inverter (DIx) current sensor hardware comparator has detected an overcurrent event (or peak) on Phase B.
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The DIx current sensor hardware comparator has detected a peak on Phase B.
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DIx may be inoperable.
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Drive Inverter Warning: Unit may not allow drive on the next drive cycle due to HW damage
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Inverter detects a shorted switch
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Inverter may not allow drive on next drive cycle
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Drive Inverter Warning: Oil pump failure
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Loss of communication or power to oil pump, persistent oil pump motor stall occurred, or persistent condition affecting oil pump functionality detected
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Initiates reduced drive unit performance and a speed limit on the vehicle, due to reduced gear lubrication and motor cooling
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Drive Inverter Warning: Oil pump service
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Adverse oil pressure detected or DC current sensor rationality degraded, see reason payload
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Drive Unit thermal estimation and limits are conservative, potential torque limiting with aggressive driving, recommend inspecting drive unit oil level and oil pump
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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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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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Drive Inverter Warning: Ambient under temperature
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Ambient temperature (refer to pcbTemp) 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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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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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 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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Drive Inverter Warning: Inverter over temperature
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Drive Inverter temperature (refer payload signals for temperatures) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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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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Drive Inverter Warning: Heatsink over temperature
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Heatsink temperature (refer to heatsinkTemp) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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Drive Inverter Warning: Ambient over temperature
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Ambient temperature (refer to pcbTemp) exceeds upper temperature threshold
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No direct impact. Could damage drive inverter if temperature is continuously too high.
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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 Drive Inverter (DIx) and Pedal Monitor (PM) estimate different amounts of torque production, causing a Cross Check mismatch.
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The DIx and PM estimate different amounts of torque production, causing a Cross Check mismatch. There may be a condition affecting DIx's or PM's ability to measure torque.
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The vehicle may not accurately measure the level of torque being produced by the Drive Unit.
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