Alerts
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| Signal Name | Description | Condition | Impact |
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This alert is reported when there is a Inter-MCU comm failure or other side is not communicating (UV or other failure).
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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 StreamingDataStorageManager_R12 (SDSM) component when the CRC is not equal to saved CRC value in all memory blocks.
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EPAS streaming data storage manager component detects CRC failure and restoration was not possible.
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EPAS fast restart was not possible.
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This alert is reported by the PhaseCurrentProvider_R12 (PCP) component if both primary and secondary current measurement channels are in saturation state and the debounce counter reaches its limit. If both current measurement channels are saturated, we assume that there is a shorted FET in the bridge. This diagnostic signals it.
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EPAS bridge FET short failure. Primary and secondary current measurement channels are in saturation state for longer than a tolerated time.
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EPAS full loss of assist
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This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the memory Built-In-SelfTest failed, errors in the critical memory units. MCU failure.
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EPAS memory BIST found any errors in critical memory units (CPU0, CPU1, DMA).
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.
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EPAS has detected flashed SW data integrity failure (ECC) but the number of faults didn't reached the tolerated limits.
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.
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EPAS has detected flashed SW data integrity failure (ECC) number of faults reached the tolerated limits.
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure. Calculated CRC not matching stored CRC.
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EPAS has detected flashed SW data integrity failure (CRC).
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported when there is a transient CRC failure in register CRC check.
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EPAS microcontroller's different registers does not contain the right values before starting the safety functions (CRC doesn't match for the first test fail).
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported when the Start-up register check failed: MCU internal error OR SW systematic failure.
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EPAS microcontroller's different registers does not contain the right values before starting the safety functions (CRC doesn't match for the second test fail).
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EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
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This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.
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EPAS logic built-in self-test failed.
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EPAS reset. If reset more than 3 then EPAS full loss of assist.
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This alert is reported by the OsErrorHandler_R12 (OSEH) component at startup after an immediate reset caused by OS error occurred in ASIL D partition. This diagnostic monitors if the OS had sensed some error in its services.
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At startup after an immediate reset caused by OS error occurred in ASIL D partition.
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EPAS reset
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This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a MCU internal bus fault.
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MCU internal bus fault.
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EPAS reset
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This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a failure to correct data error in critical MCU registers.
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EPAS Failure to correct data error in critical MCU registers.
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EPAS reset
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This alert is reported by ActuatorManager_R12 (AM) component when there is a GDU failure or current sensing failure.
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GDU failure or current sensing failure. When the GDU_FLAG_LO_CURRENT_MEASUREMENT_AMPLIFIER_DISCONNECTED bit is set in GDUStatus:GduErrorCode.
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EPAS full loss of assist.
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This alert is reported by ActuatorManager_R12 (AM) component when there is a phase relay shorted.
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EPAS detected a phase relay short failure.
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EPAS full loss of assist.
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This alert is reported by the ExceptionHandler_TC3x (EXHA) component when there is a system Bus or Peripheral Error exception other than a floating point exception.
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EPAS application component ExceptionHandler detected exception (system bus or peripheral error)
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EPAS reset
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This alert is reported by the ExceptionHandler_TC3x (EXHA) component when there is a internal Protection exception.
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EPAS application component ExceptionHandler detected exception (internal protection).
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EPAS reset
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This alert is reported by the TemperatureDiagnostics_Actuator_R12 (TDA) component when there is a phase relay overtemperature. Degradation parameters/estimator shall be checked, if those are correct, HW failure.
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EPAS application actuator temperature diagnostics detected overtemperature (phase relay FET).
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EPAS full loss of assist.
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This alert is reported by the ExceptionHandler_TC3x (EXHA) component when there is NMI caused by other alarms. Memory access violation check. This diagnostic checks if a thread or other bus master (e.g. DMA) tries to access memory region that it is not authorized to access.
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EPAS application component ExceptionHandler detected exception (other alarms caused NMI).
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EPAS reset
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This alert is reported by the ExceptionHandler_TC3x (EXHA) component when there is a SPB bus violation.
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EPAS application component ExceptionHandler detected exception (SPB bus violation).
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EPAS reset
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