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Home >> Mitsubishi >> 2021 >> RVR SEL >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Forward Collision Mitigation/Lane Departure Warning System (FCM) (LDW) - (With Diagnostics) >> General Information >> Construction Diagram

Construction Diagram

G12161823Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Main components and functions 

MAIN COMPONENTS AND FUNCTIONS DESCRIPTION

Component name Functional Description
FCM/LDW/AHB-ECU (with built-in sensor)
  • Uses a built-in sensor to recognize a vehicle traveling ahead, a pedestrian, a lane and the headlight beams which a traveling-ahead or oncoming vehicle casts.
  • Controls the Forward Collision Mitigation (FCM), the Lane Departure Warning System (LDW) and the automatic high beam system according to the sensor detection and CAN bus communication.
  • It requests the combination meter to provide status information on the functions and visual warnings via CAN communication. It also requests the ASC-ECU to control the brakes via CAN communication.
  • Adjusts the axis of the built-in sensor, and detects any blockage or malfunction.
  • Receives FCM and LDW ON/OFF switch signals to the ECUs.
ASC-ECU
  • Controls the brakes according to request signals received from the FCM/LDW/AHB-ECU via CAN communication.
  • Activates the stoplights when the automatic braking is triggered.
  • Requests the ECM to provide "engine braking" effect according to the request from the FCM/LDW/AHB-ECU.
  • Sends the signals of the FCM and LDW ON/OFF switch to the ECUs via CAN communication.
ECM
  • Sends accelerator pedal position sensor signals to the ECUs via CAN communication.
  • Controls the engine torque according to request signals received from the ASC-ECU.
TCM Informs the ECUs of the selector lever position via CAN communication.
Combination meter The FCM/LDW/AHB-ECU informs the combination meter of status information and requests it to provide visual warnings. Based on these, the combination meter controls the multi-information display, the indicator lights, the warning lights and the tone alarm.
ETACS-ECU
  • Incorporates the circuit where the ASC-ECU activates the stoplights when the FCM activates the automatic braking.
  • Switches high and low beam headlights according to request signals received from the FCM/LDW/AHB-ECU.
  • Informs the ECUs of ambient temperature via CAN communication.
  • Sends stoplight switch signals to the ECUs via CAN communication.
Column switch (with built-in steering wheel sensor) Informs the ECUs of a steering wheel angle and angular velocity via CAN communication.
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