Electric Servo Brake System Description - System Diagram

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The electric servo brake control unit receives the pedal stroke signal from the brake pedal stroke sensor, regeneration control information from the electric powertrain system, and various other signals. Based on these signals, the electric servo brake unit drives the valve in the pedal feel simulator and the motor of the tandem motor cylinder, while controlling the brake fluid pressure, and therefore the braking force for each wheel. If a problem is detected, the warning indicator in the gauge control module illuminates to inform the driver about the problem.

For locations of each component on the vehicle, refer to Component Location Index:

Courtesy of HONDA, U.S.A., INC.

F-CAN Communication Data

Electric Servo Brake System Primary Receiving Signal

Transmitting Unit	Signal Name
Gauge control module	Automatic brake hold switch status signal

Transmitting Unit	Signal Name
PCM	Servo control enable/disable signal Accelerator pedal position signal Drive torque signal Vehicle speed signal Regeneration brake control information signal Stall management control request signal Brake pedal position switch signal Shift position signal Service check signal System failure information
VSA modulator-control unit	Regeneration control stop request signal Pressurization control activation signal Wheel speed signal Longitudinal acceleration signal Hydraulic pressure control request signal Target deceleration signal Parking brake activation status Operating information of each control System failure information
Battery condition monitor module	System operating status signal
SRS unit	Yaw rate signal Driver's seat belt buckle switch status signal System failure information
Millimeter wave radar	Brake control request signal Target deceleration signal System failure information

Electric Servo Brake System Primary Transmitting Signal

Transmitting Unit	Signal Name
Electric servo brake control unit	Pressurization control activation signal Regeneration brake control request signal Stall management control information Hydraulic boost failure compensation control request signal Driver request brake pressure signal Brake light relay drive information Parking brake apply request signal Indicator drive request signal System failure information