Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
|
Motor negative lead voltage is higher than expected while active
|
The negative lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in apply direction, or higher than estimated PWM voltage if driven in the release direction.
|
Caliper motor or harness may be damaged
|
No
|
|
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Motor positive lead voltage is greater than 6.0 volts while inactive
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The Electronic Parking Brake motor is idle, and the positive lead voltage measurement is higher than 6.0 volts.
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Caliper motor or harness may be damaged
|
No
|
|
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Motor negative lead voltage is greater than 6.0 volts while inactive
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The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is higher than 6.0 volts.
|
Caliper motor or harness may be damaged
|
No
|
|
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Motor negative lead voltage measurement is less than 0.5 volts while inactive
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The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is lower than 0.5 volts.
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Caliper motor or harness may be damaged
|
No
|
|
|
Motor current was lower than expected
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Motor current measurement, with calibration offset subtracted, was lower than 0.25 amps
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Caliper could be disconnected or the harness is damaged.
|
No
|
|
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Road grade is too steep to secure vehicle and trailer with Park Brake
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Attempt to engage parking brake when vehicle with trailer is stopped on too steep a road grade for Electronic Parking Brake to secure the vehicle and trailer effectively
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Car may not be secured by Electronic Parking Brake on the current road grade, may be free rolling
|
No
|
|
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Brake temperature is above 200C and slope is greater than 10%
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The max of the rear brake calipers is hotter than 200 C and slope is greater than 10%
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Car may not be secured by Electronic Parking Brake on current road grade, may be free rolling
|
No
|
|
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EPB calculate brake hw config and epb hw config independently and checks they are the same
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All GTW config valid for EPB. Brake hw type and epb hw type do not resolve to same EPB config
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EPB may be misconfigured for vehicle setup. Could result in caliper drag and insufficent clamp force
|
No
|
|
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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
|
No
|
|
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This alert is reported when the power ratio (actual power divided by nominal power) is less than 70% [Calibratable] due to overheat protection
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EPAS power ratio (actual power divided by nominal power) is less than 60% and the cause is temperature related.
|
EPAS assist torque is limited due temperature cause.
|
No
|
|
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This alert is reported by the SystemConditionObserver_T222 (SCO) component when the a bus-off state is detected
|
EPAS has detected bus failure (Bus-off).
|
EPAS does not receive/transmit CAN messages.
|
No
|
|
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Invalid UI_chassisControlChecksum value received
|
Unexpected UI_chassisControlChecksum value received
|
Reduced steering assist
|
No
|
|
|
Invalid UI_chassisControlCounter value received
|
UI_chassisControlCounter is not incrementing correctly
|
Reduced steering assist
|
No
|
|
|
SCCM_steeringAngleSensor message not received
|
SCCM_steeringAngleSensor message is not received by EPAS
|
Reduced steering assist and SASQF = UNDEFINABLE_ACCURACY
|
No
|
|
|
Invalid SCCM_steeringAngleSensorCrc value received
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Unexpected SCCM_steeringAngleSensorCrc value received by EPAS
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Reduced steering assist and SASQF = UNDEFINABLE_ACCURACY
|
No
|
|
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GTW_carConfig message not received
|
GTW_carConfig message is not received by EPAS
|
Reduced steering assist
|
No
|
|
|
Invalid ESP_wheelSpeedsChecksum value received
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Unexpected ESP_wheelSpeedsChecksum value observed
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The power steering is operational but the level of assist is decreased
|
No
|
|
|
Invalid ESP_wheelSpeedsCounter value received
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ESP_wheelSpeedsCounter is not incrementing correctly
|
The power steering is operational but the level of assist is decreased
|
No
|
|
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Invalid ESP_wheelRotationChecksum value received
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Unexpected ESP_wheelRotationChecksum value received
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The power steering is operational but the level of assist is decreased and External Angle Controller is inhibited
|
No
|
|
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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
|
No
|