Alerts

Alerts

Signal Name Description Condition Impact
Electronic Power Assist Steering (EPAS) digital current sensor (DCS) register CREGx or CTUBx voltage less than expected
Internal digital current sensor (DCS) CBoot flag is set
This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
x19 is a diagnostic overview register, registers 1A to 1E provides additional granularity for EPAS digital current sensor (DCS) fault concerns
Any bit is set from the EPAS DCS x19 register
This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
Electric Power Assisted Steering (EPAS) reports unexpected error between internal angle sensor and steering column control module (SCCM) angle sensor.
The steering system detects divergence between its internal angle sensor and external angle sensor greater than 30 degrees.
Angle measurement divergence could indicate steering system belt slip or other mechanical failure.
This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.
EPAS uC peripheral ADC self calibration timeout at startup.
EPAS full loss of assist. EPAS ADC is considered inoperable.
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.
Measured REF voltage or Measured GND voltage are out of range.
EPAS full loss of assist.
This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.
EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.
EPAS full loss of assist.
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.
EPAS has incomplete list of reset causes at startup.
EPAS has lost info about reset causes.
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.
EPAS detected unknown startup cause at startup.
EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
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.
EPAS could not retrieve the reset reason store error in RAM.
EPAS full loss of assist. EPAS is unable to establish why the SW has been started.
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).
EPAS uC core and power supply temperatures exceed tolerated difference.
EPAS full loss of assist.
This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.
EPAS Microcontroller built-in self tests (BIST) that the SW runs after reset failed for 3 consecutive times.
EPAS full loss of assist.
This alert is reported by the SoftwareVersionChecker_R12 (SVC) component when the primary and secondary side SW version is different, reflashing is needed.
EPAS primary and secondary side SW versions are incompatible.
EPAS full loss of assist.
This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure (The Secondary Monitor and Standby SMU Built in Self Test failed).
EPAS microcontroller (MON)BIST failed (SecondaryMonitor versus Standby SMU) at startup.
EPAS full loss of assist.
This alert is reported by the MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU internal failure. (Memory Built-In-SelfTest failed).
EPAS microcontroller memory (M)BIST failed at startup.
EPAS full loss of assist.
Motor position sensor 1 logic error
Motor position sensor 1 logic error
Reduced steering assist
One or more expected Controller Area Network (CAN) messages from the vehicle security controller (VCSEC) electronic control unit (ECU) was not received
One or more CAN messages from the VCSEC ECU is not received as expected
The VCSEC to Electronic Power-Assisted Steering (EPAS) interface is interrupted. Tire-based steering tuning may be affected
EPAS3P/S_status message not received on internal private bus
EPAS3P/S_status message is not received on internal private bus
Incorrect EPS status on bus
Internal private bus off
CAN transmit error counter is above 255
Incorrect EPS status on bus
Invalid SCCM_steeringAngleSensorCounter value received
SCCM_steeringAngleSensorCounter is not incrementing correctly
Reduced steering assist and SASQF = UNDEFINABLE_ACCURACY
SCCM_steeringAngleSensor message not received
SCCM_steeringAngleSensor message is not received by EPAS
Reduced steering assist and SASQF = UNDEFINABLE_ACCURACY