Mazda CX-5 Service & Repair Manual: Blind Spot Monitoring (Bsm) Control Module

Purpose

• Controls the blind spot monitoring (BSM) system.

Function

• The BSM control module emits microwaves to detect an oncoming vehicle's position and speed information via the reflected microwaves.

• The BSM system is controlled based on the detected vehicle position and speed information.

• A self-diagnostic function has been adopted.

Construction

• The BSM control module and radar have been integrated.

• Microwaves are emitted from the radar.

• Two control modules are positioned on the left and right sides of the body inside the rear bumper.

Operation

• The BSM control module emits microwaves to the vehicle rear to detect the obstruction via the reflected microwaves.

Radar Emitting Area

• Cross-directional: 1 m {3 ft}

  toward the front of the vehicle, and 7 m {23 ft}

  toward the rear of the vehicle from the rear end of the vehicle (total, 8 m {26 ft}

  ).

• Lateral direction: 0.5—3.8 m {2—12 ft}

  from the side of the vehicle (total, 3.3 m {11 ft}

  ).

  

  
  

• When the vehicle is cornering, such as turning into an intersection, the shape of the warning area on the inner side changes.

• Cross-directional: Length of the vehicle rear changes depending on the steering angle.

• Lateral direction: Angle of the warning area changes along the vehicle’s turning orbit.

Fail-safe