Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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Yaw Rate Sensor: Plausibility against second signal failed
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Yaw Rate Sensor: Plausibility against second signal failed
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status
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Inertial signal failed plausibility/integrity checks
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Air Bag Control Module : Invalid Yaw Signal Status
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Yawrate signal received from RCM exceeds message latency specification
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Plausibility fault
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This monitoring detects a wrong sign of steering angle signal. The yaw rate calculated from steering angle and the yaw rate calculated from the wheel speed sensors are compared. If the measured yaw rate fits to the model yaw rate positive integrals (IVzLwVA and IVzLwHA) are calculated but if the negative values fits the integrals will become negative. A fault is determined if the integral value is negative and forward driving is recognized. This fault will cause a release test in the following ignition cycle to assure that the sensor is build in correctly. This fault can also be caused by swapped WSS lines at one axle. It requires a release check in the following ignition cycle to prevent system release when the fault is still present. The conditions for release is positive integrals (IVzLwVA and IVzLwHA) > +180 deg.
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Plausibility fault
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The monitoring checks for a physically plausible steering angle signal and consists of following parts:- Sas range monitoringReceived raw sensor hardware value is higher than the maximum, physical steering wheel turn from zero-position to lock in the vehicle (LwAnschlMax) + an additional robustness tolerance value (typical 90 deg)- Sas gradient monitoringIf the signal gradient (steering angle velocity) from one 20 ms-cycle to another is higher than 40 deg for 2 SAS Messages (60 deg for more than 2 SAS messages or no SAS message counter) or - change of this gradient (steering angle acceleration) is higher than 30 deg a failure will be set.- Sas plausibility versus yaw rateThe difference between measured steering angle signal and model value calculated from yaw rate signal is evaluated for fault detection. Dependent on the driving conditions failures in size of (10 + 60 [m/s] / velocity [m/s]) deg at steering angle are recognized through three possible recognition paths evaluating stable driving conditions. This is to prevent a fault recognition due to unstable driving.When the difference is caused by a fault of the steering angle sensor a steering sensor angle fault will be entered. The sensor - yaw rate sensor(YRS) or steering angle sensor(SAS) - showing the largest deviation to the reference yaw rate is marked as faulty.
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Adjustment not possible (Offset too large)
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Steering offset received from EPAS outside of threshold
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May fault VDC/TC, ABS performance degradation
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Steering Wheel Position Sensor: Constant signal detected
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EPAS3P_internalSAS is frozen on CAN
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Steering Angle Sensor Module: Invalid Signal Status
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EPAS3P_internalSAS fails plausibility check for center position
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May fault VDC/TC, ABS performance degradation
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Invalid Data Received From Steering Angle Sensor Module: Invalid Signal Status
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EPAS3P_internalSASQF is received as invalid
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May fault VDC/TC, ABS performance degradation
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Right Front Wheel Speed Sensor Generic Fault.
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WSS test failure of WSS_FR (Short circuit supply line to UBATT short circuits between sensors any line failure)
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Will disable VDC/TC and degrade ABS
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Plausibility fault while monitoring of wheel direction.
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At least one wheelspeed sensor is mounted in the wrong direction. This error will be set if case one: 1 rotation direction of the sensor signal is in one direction and the other 3 rotations are in the other direction OR case two: 1 rotation direction of the sensor signal has no rotation and 1 rotation in one direction and 2 rotations in other direction.
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Will disable VDC/TC and degrade ABS
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Right Front Wheel Speed Sensor: Plausibility against second signal failed due to monitoring of wheel speed differences.
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Large wheel speed diff relative to other sensors detected
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Will disable VDC/TC and degrade ABS
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Right Front Wheel Speed Sensor against second signal failed due WSS signal interferences or disturbances.
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WSS signal interferences or disturbances
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Will disable VDC/TC and degrade ABS
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WSS fault due to missing wheel speed signal.
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No stop pulses occurred on WSS
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Will disable VDC/TC and degrade ABS
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Invalid Data Received FromBrake Booster iBooster : Invalid Signal Status.
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IBST_pRunout is invalid on CAN
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Brake boost is degraded.
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Invalid Data Received From Brake Booster iBooster : Invalid Signal Status.
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IBST status is invalid on CAN
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Brake boost is degraded. HBC will be enabled
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The Electronic Stability Program (ESP) electronic control unit (ECU) is not receiving messages from the iBooster (IBST) ECU on the Party controller area network (CAN) bus within the expected time frame.
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The ESP ECU does not receive messages from the IBST ECU on the Party CAN bus within the expected time frame.
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Brake boost functionality may be limited or unavailable.
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