Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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Invalid ESP_wheelRotationCounter value received.
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ESP_wheelRotationCounter is not incrementing correctly
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The power steering is operational but the level of assist is decreased and External Angle Controller is inhibited
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EPAS3P_status message not received.
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EPAS3P_status message is not received by EPAS
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Incorrect EPS status on bus
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The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the car computer on the CAN bus.
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The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the car computer on the CAN bus.
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Steering assist may be reduced or may not function as expected.
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Invalid EPAS3P_statusCounter value received.
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EPAS3P_statusCounter is not incrementing correctly
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Incorrect EPS status on bus
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DI_speed - backup vehicle speed - message not received.
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Electronic Power Assist Steering (EPAS) does not receive DI_speed on CAN as expected
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The power steering is operational but the level of assist is decreased and External Angle Controller is inhibited.
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Invalid DI_speedChecksum value received.
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Unexpected DI_speedChecksum value received by EPAS
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Electronic Power Assist Steering (EPAS) will use safe speed reduced assist level if invalid DI_speed message received
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Invalid DI_speedCounter value received.
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DI_speedCounter is not incrementing correctly
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Electronic Power Assist Steering (EPAS) will use safe speed reduced assist level if invalid DI_speed message received
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The electric power assist steering (EPAS) Electronic Control Unit (ECU) is not receiving the drive inverter torque message, which may be the result of controller area network (CAN) bus issues.
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The electric power assist steering (EPAS) Electronic Control Unit (ECU) does not receive the drive inverter torque message.
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External Angle Controller is inhibited.
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Invalid DIR_torqueChecksum value received.
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Unexpected DIR_torqueChecksum value received
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External Angle Controller is inhibited
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Invalid DIR_torqueCounter value received.
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DIR_torqueCounter is not incrementing correctly
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External Angle Controller is inhibited
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DAS_steeringControl message not received.
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DAS_steeringControl message not received by EPAS
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External Angle Controller inhibited
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Invalid DAS_steeringControlChecksum value received.
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Unexpected DAS_steeringControlChecksum value received by EPAS
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External Angle Controller inhibited
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Invalid DAS_steeringControlCounter value received.
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DAS_steeringControlCounter is not incrementing correctly
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External Angle Controller inhibited
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APS_eacMonitor message not received.
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APS_eacMonitor message not received by EPAS
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External Angle Controller inhibited
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Invalid APS_eacMonitorChecksum value received.
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Unexpected APS_eacMonitorChecksum value received by EPAS
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External Angle Controller inhibited
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Invalid APS_eacMonitorCounter value received.
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APS_eacMonitorCounter not incrementing correctly
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External Angle Controller inhibited
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This alert is reported on secondary side only when the internal input queue for secondary side errors overflowed.
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EPAS internal error queue is overflowed.
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EPAS loss of alerts on secondary side (EPASTS)
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This alert is reported by the FastRestartHandler_R12 (FRH) component when the fast restart has failed.
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EPAS fast restart mechanism has failed due to blackout time failure or reset counter failure.
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EPAS normal assist with autonomous fuctions inhibited.
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This alert is reported when the current ECU side is not capable of assist torque calculation.
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EPAS ECU side loses assist calculation capability (the operation mode on the current ECU side is 'EPAS' and the current ECU side is not capable of assist torque calculation).
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Current EPAS ECU side is not capable of calculate the assist torque.
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This alert is reported by the MasterSilentDecition_T222 (MSD) component if there is a problem with the master-silent decision, i.e. both sides are master or both sides are silent.
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EPAS master-silent decision failure leading to a master or silent on both sides at the same time.
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Both EPAS primary and secondary can be master or silent.
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