Alerts
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| Signal Name | Description | Condition | Impact |
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This alert is reported by the FrictionManager_R12 (FRM) component when high friction is detected.
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EPAS application friction management diagnostics detected failure (high friction) at any vehicle speed.
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High friction is detected in the steering system.
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This alert is reported by the FrictionManager_R12 (FRM) component if there is any friction management data lost.
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EPAS application friction management diagnostics detected failure (loss of NVM data).
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EPAS uses the predefined parameters for friction estimation instead of stored ones.
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This alert is reported by the FdrDetectionManager_R12 (FDR) component when a total blocking due to freezing is detected.
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EPAS application diagnostics detected water freezing problem (gear is completely blocked and it is uncontrollable).
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Steering gear is blocked due water freezing.
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This alert is reported by the FdrDetectionManager_R12 (FDR) component when a low severity freezing is detected at low vehicle speed. If the vehicle speed goes higher it can lead to a FDR_OCL_FREEZING alert.
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EPAS application diagnostics detected water freezing problem (at low speed).
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EPAS detected water freezing at low vehicle speed.
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This alert is reported by the FdrDetectionManager_R12 (FDR) component when a low severity blocking due to freezing is detected at low vehicle speed. If the vehicle speed goes higher it can lead to a FDR_OCL_PARTIAL_BLOCKING alert.
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EPAS application diagnostics detected water freezing temperature problem at low speed causing partial blocking.
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EPAS detected water freezing causing low severity block.
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This alert is reported by the Output Control Logic (OCL) of the FdrDetectionManager_R12 (FDR) when freezing is detected.
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EPAS application diagnostics detected water freezing temperature problem (torque limit) at vehicler speed higher than limit.
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EPAS detected water freezing. EPAS activates retention.
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This alert is reported by the Output Control Logic (OCL) of the FdrDetectionManager_R12 (FDR) when a partial blocking is detected.
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EPAS application diagnostics detected freezing temperature problem causing partial blocking of gear at higher vehicle speed.
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EPAS detected water freezing causing partial blocking.
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This alert is reported by the Output Control Logic (OCL) of the FdrDetectionManager_R12 (FDR) component when the necessary signals for freezing and retention detection are not available.
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EPAS application diagnostics detected freezing temperature problem (missing sensor signals - MotorAngle/MotorAngleSpeed).
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Freezing detection and retention inhibited.
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This alert is reported by the FdrActiveDetectionPrevention_R12 (FDP) component if there is a problem with the active prevention torque of the freezing detection feature.
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EPAS freezing active detection prevention torque checker indicates error (prevention torque is switched to zero).
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Active prevention torque of the freezing detection is inhibited.
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This alert is reported by the ColumnTorqueController_R12 (CTC) component when there is a problem with one of the necessary inputs of the column torque controller. Column Torque Controller is not able to calculate assist torque.
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If one of its necessary signals are not available or if the necessary parameters are not available. The column Torque Controller is not able to calculate assist torque. Sensor failure (TSU, RPS), or magnet temperature implausible.
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EPAS column Torque Controller is not able to calculate assist torque.
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This alert is reported by the OffsetHandlerNvmProxy_Generic (OHNVMP) component if there is a problem in reading/storing the learned steering position offsets data on the NvM.
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Not possible to read/store learned steering position offsets data on the NvM
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Position-dependent steering features are disabled. Assist still provided.
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This alert is reported by the ApplicationManagerProxy_Generic (AMM) component if between two executions the applications send more than 10 application management messages to port LocalManagementMessages. The alert will not be cleared.
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EPAS application manager component send more application management messages than limit between two executions.
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EPAS can not perform shutdown. EPAS full loss of assist.
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This alert is reported by the OnlineStackUsageMonitor_R12 (OSUM) component when stack usage on core 1 is almost full.
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If stack usage on core 1 is almost full. EPAS memory usage monitor detected high consumption warning (stack usage on Core1).
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No impact
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This alert is reported by the OnlineStackUsageMonitor_R12 (OSUM) component when context switch area (CSA) stack usage on core 1 is almost full.
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EPAS memory usage monitor detected high consumption warning (context switch area usage on Core1).
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No impact
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This alert is reported by the DIFactorProvider_Generic (DIFP) component in case of DI factor Calibration data failure.
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DI factor Calibration data failure.
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No impact
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This alert is reported by the TASOffsetProvider_Generic (TOP) component in case of tas offset calibration data failure.
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Tas offset calibration data failure.
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No impact
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This alert is reported by the IMCM_C1 (IMCM) component in case Inter-MCU comm failure or the other side is not communicating (UV or other failure).
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Inter-MCU comm failure or the other side is not communicating. The signal is unavailable because checksum error, or the signal is unavailable because Alive counter error, or Timeout (no frame arrived), or Frame size is out of range.
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EPAS A and B sides are not able to communicate. Steering assist reduced or might be unavailable.
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This alert is reported by the SBCStartupCauseProvider_A8140x (SBCSCP) component in case of MCU I/O power supply (VDD_IO) monitor by SBC and under/over voltage on the second charge pump. Against power supply faults of the main microcontroller.
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Under or over voltage on 5V MCU and VCP2 supplies.
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EPAS full loss of assist.
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This alert is reported in case SBC Communication buffer overflow checker. Against systematic SW failures on SystemBasisChipHAL component.
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SBC Communication buffer overflows (Sending data is bigger than buffer limit (DMA_BUFFER_LENGTH) or Previously triggered message transfer is not finished: DmaChannelStatus is not DMA_TRANSFER_STATUS_SUCCESS or RTE buffer (message queue) overflow in the SystemBasisChipHAL_A8140x component).
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EPAS reset. If reset more than 5 times then EPAS full loss of assist.
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This alert is reported by the SystemBasisChipHAL_A8140x (SBCH) component in case SBC communication check (MCU -> SBC) fails. Against random HW failures of the MCU and communication line including EMC.
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SBC communication check (MCU -> SBC) fails (SE flag is set in WD feeding answer messages).
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EPAS reset. If reset more than 5 times then EPAS full loss of assist.
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