2014 - Mazda6 - Engine

RADAR SENSOR [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM]

Purpose

• The radar sensor detects the distance to the vehicle ahead.

Function

• The radar sensor emits millimeter waves^* from the front to the vehicle ahead, and a vehicle or obstruction is detected from the reflected waves.

*

These radio waves, at a frequency of 30—300 GHz and wavelength of 1—10 mm {0.04—0.39 in}, possess a property in which the affect of rain and soiling is comparatively small and the reception of other radio waves is insusceptible.

Construction

• The radar sensor is installed on the interior side of the radiator grille.

  

Operation

• Millimeter waves are emitted at an angle of 14 ° to the left and right from the center (total 28 °) and they can detect obstructions up to approx. 200 m {656 ft} from the front of the vehicle.

  

• The radar sensor uses a specialized CAN and performs transmission with the vehicle control module (V/C-module).

Fail-safe

• If the following malfunctions are detected, the radar sensor stops detecting the forward movement of the vehicle.

• Radar sensor internal circuit malfunction

• Communication error between radar sensor and vehicle control module (V/C-module)

• Radar sensor is outside of operation range (ignition power supply, internal temperature)