2014 - Mazda6 - Body and Accessories

BLIND SPOT MONITORING (BSM) CONTROL MODULE

Purpose

• The blind spot monitoring (BSM) control module detects a target vehicle in the blind-spot at the rear of the vehicle by emitting microwaves from the radar to control the blind spot monitoring (BSM) system.

Function

• The blind spot monitoring (BSM) control module controls the BSM system based on the following CAN signals:

• The blind spot monitoring (BSM) control module (LH) transmits with the related unit using CAN. The BSM control modules (LH) and (RH) transmit via special CAN lines.

• The blind spot monitoring (BSM) control module (LH) transmits the CAN signal received from the related unit to the BSM control module (RH) and sends the CAN signal received from the BSM control module (RH) to the related unit.

Target vehicle detection function

• The blind spot monitoring (BSM) control module emits microwaves to the following area to detect an object in the blind-spot at the rear of the vehicle from the reflected microwaves.

• The blind spot monitoring (BSM) control module calculates the position, direction of vehicle travel, and relative speed of the detected object from the reflected microwaves, vehicle speed, and steering angle (estimated absolute angle) signal to detect an object which approaches the blind-spot at the rear of the vehicle as a target vehicle for monitoring.

Changing function brightness of blind spot monitoring (BSM) indicator light

• When the blind spot monitoring (BSM) control module receives the panel light signal from the instrument cluster, it determines that the vehicle is being driven at night or in a dark place and decreases the brightness of the blind spot monitoring (BSM) indicator light. As a result, visibility of the blind spot monitoring (BSM) indicator light at night has been improved.

On-board diagnostic function

• The blind spot monitoring (BSM) control module detects soiling, transmission errors, and internal malfunctions of the module and stores DTCs. In addition, the BSM off indicator light in the instrument cluster flashes to indicate a system error. For DTC details, refer to ON-BOARD DIAGNOSTIC [BLIND SPOT MONITORING (BSM) SYSTEM].

Construction

• The blind spot monitoring (BSM) control modules are positioned on the left and right sides of the body inside the rear bumper.

• The blind spot monitoring (BSM) control module is integrated with the radar, which emits microwaves and receives the reflected waves, and the control module.

  

Operation

• For the operation of the blind spot monitoring (BSM) control module, refer to the BSM system. (See BLIND SPOT MONITORING (BSM) SYSTEM.)

Fail-safe