Alerts

DIF_torque is received with incorrectly incrementing counter for longer than 100 milliseconds.

The Integrated Dynamic Brake (IDB) may not generate brake torque requested by DI_brakeTorqueCommandFull and instead generate brake torque requested by DI_brakeTorqueCommand. There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.

No

DIF_torque is received with incorrect CRC for longer than 100 milliseconds.

The Integrated Dynamic Brake (IDB) may not generate brake torque requested by DI_brakeTorqueCommandFull and instead generate brake torque requested by DI_brakeTorqueCommand. There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.

No

DIF_torque is not received for longer than 100 milliseconds or DIF_torque is received with incorrect data length for longer than 100 milliseconds.

The Integrated Dynamic Brake (IDB) may not generate brake torque requested by DI_brakeTorqueCommandFull and instead generate brake torque requested by DI_brakeTorqueCommand. There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.

No

RCU_actuation is received with incorrectly incrementing counter for longer than 200 milliseconds.

There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.

No

Power supply voltage is less than 6.5V for 300 milliseconds if vehicle speed is under 7 kmph, or 160 milliseconds if vehicle speed is over 7 kmph.

The IDB enters fallback mode and relinquishes controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Electronic Brake Distribution (EBD), Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compensation (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.

No

The IDB has activated HFC.

The Integrated Dynamic Brake (IDB) is increasing actuated brake torque to compensate for brake fade due to high brake temperatures.

No

The IDB has activated PBA.

The Integrated Dynamic Brake (IDB) is increasing actuated brake torque above the current request in response to a fast brake pedal application.

No

The IDB has begun actuating BTC requests.

The Integrated Dynamic Brake (IDB) is actuating an external request to build brake torque at one or more wheels to control wheel spin from motor torque.

No

The IDB has begun actuating VDC requests.

The Integrated Dynamic Brake (IDB) is actuating an external request to build brake torque at one or more wheels to control vehicle dynamics.

No

EBD control has activated.

The Integrated Dynamic Brake (IDB) is modulating brake torque to achieve a desired pressure distribution across all four wheels.

No

At least one wheel has entered ABS control.

The Integrated Dynamic Brake (IDB) is modulating brake torque to limit wheel lock.

No

The initial motor check is interrupted by a power supply hard undervoltage, where the IDB poewr supply voltage is less than 6.5V for 300 milliseconds.

There is no direct impact to IDB functionality. The motor initialization check is not completed.

No

No CAN traffic is received via the CHASSIS CAN bus (IDB connector pins 9, 10).

IDB diagnostics may not be available, and the IDB may not be able to communicate over CHASSIS bus.

No

No CAN traffic is received via the PARTY CAN bus (IDB connector pins 16, 17).

The IDB may not be able to communicate via the PARTY CAN bus. Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compensation (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. The vehicle should be driven with extreme caution.

No

The measured motor rotor position is not changing in response to applied currents, or measured brake pressure does not follow the target pressure.

Only Electronic Brake Distribution (EBD) may be available. The IDB enters fallback mode and relinquishes controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compenration (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.

No

The walls of the IDB pump piston housing is not detected on power on.

Only Electronic Brake Distribution (EBD) may be available. The IDB enters fallback mode and relinquishes controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compenration (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.

No

The IDB motor coil temperature is greater than 200 degrees Celsius.

Only Electronic Brake Distribution (EBD) may be available. The IDB enters fallback mode and relinquishes controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compenration (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.

No

The IDB receives a valid BDW request via the EPBL_brakeDiscWipeRequest Controller Area Network (CAN) signal.

The IDB is applying an small amount of brake pressure in order to clear the brake discs of water without decelerating the vehicle.

No

The IDB motor coil temperature is between 180 and 200 degrees Celsius.

Brake boost pressure is limited to 50 bar. Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compensation (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), and Externa Brake Request (EBR) may be unavailable. The vehicle should be driven with extreme caution.

No

The IDB detects a mechanical or electrical solenoid valve issue.

The IDB enters fallback mode and relinquishes controlling status to the Redundant Control Unit (RCU). The RCU may assume controlling status and perform backup brake boost, but Electronic Brake Distribution (EBD), Anti-lock Brake System (ABS), Brake Traction Control (BTC), Vehicle Dynamics Control (VDC), Panic Brake Assist (PBA), Hydraulic Fade Compensation (HFC), Controlled Deceleration via Parking brake (CDP), Brake Disc Wipe (BDW), External Brake Request (EBR), and Secondary Collision Mitigation (SCM) may be unavailable. Increased braking effort may be necessary to achieve desired deceleration. The vehicle should be driven with extreme caution.

No