Alerts
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| Signal Name | Description | Condition | Impact |
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One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).
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One or more of the expected messages from the DIF ECU is not received.
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Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.
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More than half of the Electronic Control Units (ECUs) on either the Left CAN (LC) or Right CAN (RC) bus are missing more than half their messages while the bus should be active.
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If 50% or more of the ECUs the local ECUs listens to are MIA, and the local ECU receives from more than 3 ECUs on this bus. An ECU is MIA if more than 50% of its messages are MIA and that ECU is considered CAN active (see specific ECU's MIA alert for CAN active conditions).
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Vehicle functionality may not operate as expected.
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Steering power is reduced as Transport Mode has been enabled.
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Transport Mode is enabled.
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Steering performance may be reduced until Transport Mode is disabled.
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Handwheel center is calibrated to center of mechanism and may be offset from visual center.
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Handwheel calibration is captured during the FIND-CENTER routine.
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Vehicle does not drive straight while holding the handwheel at visual center.
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Power steering startup sequence is unsuccessful.
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Controller calibration check is unsuccessful, corresponding controller monitor is not responding, or state timeout occurs.
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The motor is disqualified and system health is degraded.
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Power steering startup sequence is unsuccessful.
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Controller calibration check is unsuccessful, corresponding controller monitor is not responding, or state timeout occurs.
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The motor is disqualified and system health is degraded.
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The motor factory calibration record is missing or invalid.
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Motor factory calibration record missing or invalid
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Motor factory calibration may be missing, preventing operation
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The Steering Column Control Module (SCCM) steering angle has not been calibrated.
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Uncalibrated SCCM steering angle detected
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Steering performance may be degraded
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The median check fault counter has started to count up.
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The median check fault counter has started to count up
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Loss of redundancy in steering feedback
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The handwheel has not been calibrated.
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Uncalibrated handwheel detected
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Steering control from this node is disabled
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Handwheel rotation delta comparison with other sources failed.
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One or more angle sources is not within the velocity dependent allowed error bounds
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Loss of steering feedback
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Steering system may be reducing power and functionality to prevent overheating, due to higher than nominal system temperature detected.
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When part of steering system is detected to be close to its overheating limit
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Torque output may be reduced, and steering system may have reduced performance
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A phase current offset of a steering controller is greater than the expected variance. Steering may not operate as expected.
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A phase current offset greater than the expected variance is detected.
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Steering may not operate as expected. Controller may be damaged.
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The primary motor position sensor has been deemed invalid.
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The motor position sensor signals have failed a safety check.
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The motor is disqualified and rack control health is degraded.
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Steering motor current continuity is irrational. The sum of the three phase currents is not equal to 0.
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Observed current into motor does not match current exiting.
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The motor is disqualified and system health is degraded.
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The primary motor position sensor has been deemed invalid.
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The motor position sensor experiences an issue affecting configuration and/or communication, or magnetic flags are set.
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The motor is disqualified and handwheel feedback health is degraded.
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Motor is not calibrated.
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On startup, Electronic Power Steering (EPS) detects motor calibration is incomplete
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Motor torque may not be generated
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Motor position sensor is not calibrated.
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On startup, Electronic Power Steering (EPS) detects motor position sensor calibration is incomplete
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Motor torque may not be generated
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One or more steering motor position sensor readings are invalid.
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Any motor position sensor is deemed invalid, or readings from valid sensors disagree by more than allowed threshold.
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Invalid sensor readings could affect systems reliant on position data.
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One or more of the expected CAN messages from the Etherloop Generalized Gateway Rear (Core 1) were not received, indicating the EGGREAR1 ECU may be unavailable (MIA).
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The local ECU does not receive one or more of the expected messages from the EGGREAR1 within the expected time frame.
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Vehicle functions that depend on the EGGREAR1 may be unavailable or may not function as expected.
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