Brake System Control Module 2 (BSCM2)

On models that are equipped with the Hands Free Active Driving Assist System, the BSCM2 provides a redundancy braking mechanism and control. It provides a hardwired taillight redundancy signal to the BCM to turn on the brake lights when the driving assist system is braking through its own calculations and the brake pedal is not receiving any driver input.

The BSCM2 receives the front WSS signals and provides that data for the rest of the braking system and other modules that need the data on the CAN data bus.

The BSCM2 is powered by a 50 amp fuse and a 30 amp fuse in the Power Distribution Center (PDC). The BSCM2 receives an ignition RUN/START feed from a 10 amp fuse in the PDC.

The BSCM2 communicates on a CAN-FD data bus with the BSCM, CADM, EPS CVPAM, PCM and ORC. It communicates on a second CAN-FD data bus with the CADM2, CVPAM, EPS, ORC, SGW and BCM

Hardwired Inputs 

• Front WSS data

Hardwired Outputs 

• Redundancy signal to taillights

CAN Inputs 

• Vehicle configuration
• Commanded ignition switch status
• Steering wheel angle data
• Latitudinal, Longitudinal and YAW status, offsets and data
• Brake pedal status and actual position
• Brake fluid level status
• ADAS status
• Vehicle speed
• ORC identification
• Rolls Mode activation signal
• EPB status
• Transmission gear engaged
• BSCM operational status
• BSCM health check

CAN Outputs 

• Vehicle stand still status
• Vehicle speed
• Left and Right Front fast pulse counter
• Left and Right front spin status
• Left and Right WSS fail status
• Left and Right wheel speed
• ABS active status
• ABS fail status
• Rolls Mode status
• Brake status
• Brake torque signal
• Inlet brake pressure sensed from upstream brake pressure
• BSCM2 fault status
• BSCM2 operational status
• Brake operational status from secondary actuator
• BSCM2 health check