Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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This alert is reported by the OnlineStackUsageMonitor_R12 (OSUM) componen twhen context switch area usage on core 0 is almost full.
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EPAS memory usage monitor detected high consumption warning (context switch area on Core0).
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No impact
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No
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This alert is reported by the TemperatureSensorMCUCore_TC3x (TSMC) component when there is a MCU internal failure (temperature sensor or other failure which generates uneven heating of the MCU).
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EPAS uC core and power supply temperatures exceed tolerated difference.
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EPAS full loss of assist.
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No
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This alert is reported by the SwResetHandler_R12 (SWRH) component when there is a RAM failure: the stored error is not visible OR SW systematic failure: error not stored or not handled.
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EPAS could not retrieve the reset reason store error in RAM.
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EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
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No
|
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This alert is reported by the StartupCauseProvider_R12 (SCP) component when all received causes are unknown startup causes and the determined startup cause is UNKNOWN.
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EPAS detected unknown startup cause at startup.
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EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
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No
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This alert is reported by the StartupCauseProvider_R12 (SCP) component in case, at least one of the possible reset causes is not available after the provision time has elapsed.
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EPAS has incomplete list of reset causes at startup.
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EPAS has lost info about reset causes.
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No
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This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.
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EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.
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EPAS full loss of assist.
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No
|
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This alert is reported by the WatchdogHandler_A8140x (WDH) component in case SBC Communication buffer overflow checker. Against systematic SW failures on WatchdogHandler component.
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SBC Communication buffer is overflow (RTE buffer (message queue) overflow in the WatchdogHandler_A8140x component).
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EPAS reset. If reset more than 5 times then EPAS full loss of assist.
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No
|
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This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) multiplexer testing failed, the root cause also can be reference problems or short-to-GND/short-to-supply type pin errors.
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Measured REF voltage or Measured GND voltage are out of range.
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EPAS full loss of assist.
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No
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This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.
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EPAS uC peripheral ADC self calibration timeout at startup.
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EPAS full loss of assist. EPAS ADC is considered inoperable.
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No
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This alert is reported by the Oscillation Compensation component when the filtered maximum motor torque is greater than a threshold for a certain amount of time.
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Filtered maximum motor torque is greater than a set threshold [Calibratable] for a tolerated time.
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EPAS is not able to provide Active Oscillation Compensation torque.
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No
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This alert is reported by the AssistActivationDeactivation_T222 (AAD) component when safe vehicle speed assist applied on Electronic Power Assist Steering (EPAS).
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EPAS vehicle speed signal is not reliable or available (CRC/Counter/MIA error on DI_speed message or DI_VelocityEstimatorState message is received with VE_STATE_NOT_INITIALIZED or VE_STATE_BACKUP_MOTOR)
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EPAS steering features remain enabled using safe speed. External angle control is inhibited. Steering features include: Friction Manager, Freezing Detection and Retention, Active Damping, Assist Limiter and Position Limiter, Column Torque Controller, Controlled Return (or Active Return), Controlled Stickiness Compensation, Lane Departure Warning, Oscillation Compensation (this feature is currently tuned out) , Pull Drift Compensation, Soft Catch Up Emulation, Steering Support, Virtual End-Lock
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No
|
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This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when due to sustained torque, output torque is limited. This corresponds to the Curb Damage Protection feature and the max available torque is degraded when there is a high torque and low motor angle speed.
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EPAS curb damage protection degradation factor is less than 60% [Calibratable].
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EPAS assist torque is limited.
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No
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This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when Internal faults/errors are preventing EPAS to produce its full torque capability. This alert is reported when the power ratio (actual power divided by nominal power) is less than 60% [Calibratable].
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EPAS power ratio (actual power divided by nominal power) is less than 60% [Calibratable].
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EPAS assist torque is limited.
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No
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This alert is reported by the SBCStartupCauseProvider_A8140x (SBCSCP) component if external question-answer watchdog (Q&A) fails. MCU SM requires it, against systematic SW faults, and random HW faults of the time base.
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if external question-answer watchdog (Q&A) fails (status_0.WD_Fn_S is cleared).
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EPAS reset. If reset more than 5 times then EPAS full loss of assist.
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No
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This alert is reported by the SystemConditionObserver_T222 (SCO) component when the private bus-off state is detected. Inter MCU Communication (IMC) problem.
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EPAS Inter MCU Communication health status is faulty.
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EPAS master/silent decision.
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No
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This alert is reported by the ParameterSelectorProvider_T222 (PSP) component when the SYS (System) or STF (Steering Feel) related parameters selection is not successful.
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SYS (System) or STF (Steering Feel) related parameters selection is not successful.
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EPAS full loss of assist.
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No
|
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This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when underVoltage is detected.
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EPAS has detected supply undervoltage (less than 9v [Calibratable]).
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Assist is disabled.
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No
|
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This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when overVoltage is detected.
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EPAS has detected supply overvoltage (higher than 18v [calibratable]).
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Assist is disabled.
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No
|
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The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Gateway (GTW) on the CAN bus.
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The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the Gateway on the CAN bus.
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Steering assist may be reduced or may not function as expected.
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No
|
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The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.
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The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the RCM on the CAN bus.
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Steering assist may be reduced or may not function as expected. Since External Angle Control (EAC) requests may be rejected, Autopilot features may be unavailable or may not function as expected.
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No
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