Mitsubishi Outlander (2013+). Manual - part 168

 

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Mitsubishi Outlander (2013+). Manual - part 168

 

 

FORWARD COLLISION MITIGATION (FCM)

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-24

FORWARD COLLISION MITIGATION (FCM)

GENERAL INFORMATION

M2357000200136

CAUTION

Do not overestimate the FCM. It is never 
almighty. In addition, the FCM is not designed to 
avoid driver's inattentive or careless driving or 
improve the poor vision due to rain or fog.

• No system control and warnings are provided 

if any of the conditions below is satisfied:

a. A vehicle-travelling-ahead is stationary, 

extremely slow or extremely slower than 
your vehicle.

b. Another vehicle cuts in abruptly.

c. The distance between your vehicle and a 

vehicle-travelling-ahead is too short.

d. The FCM system is defective.

• No system control and warnings MAY be pro-

vided if any of the conditions below is satis-
fied:

a. The object travelling ahead is a motor 

bike, a bicycle, a pedestrian, an animal or 
a falling object on the road, etc.

b. An extremely heavy load is stored on the 

rear seat or the luggage compartment.

c. The radar is contaminated with dirt, snow 

or ice.

d. The vehicle is being driven on a winding 

road or near a corner.

e. In bad weather (rain, snow, fog)

f. Another vehicle interrupts your vehicle 

abruptly.

g. Your vehicle is driven uphill or downhill 

repeatedly.

h. The system determines that the driver has 

operated the steering wheel, the accelera-
tor pedal, the brake pedal or the shift lever 
to avoid a collision.

i. Your vehicle is not being driven stably due 

to unstable relationship between your 
vehicle and the vehicle-travelling-ahead, 
the steering operation conditions, a traffic 
accident or vehicle faults.

• A system control and warnings MAY be pro-

vided if any of the conditions below are satis-
fied:

a. There is an obstacle near a road curve.
b. The vehicle is being driven across a nar-

row bridge.

c. The vehicle is being driven through a low 

or narrow gate.

d. There are road humps, pothole or any 

metal obstacles.

e. Your vehicle becomes too close to the 

vehicle-travelling-ahead during overtak-
ing.

f. Your vehicle is being driven under an over-

pass.

• The system may operate incorrectly if any of 

the following conditions is satisfied. In such a 
case, turn the FCM system off.

a. Your vehicle is towed.
b. Your vehicle is carried by a truck.

c. Your vehicle is driven on a chassis 

dynamometer or a free roller.

d. Wheels rotates freely by starting the 

engine with your vehicle off the ground.

e. Your vehicle is driven under a streamer, a 

flag or a weeping tree branches, or on a 
bush.

f. Sporty driving such as competition

If the Forward Collision Mitigation (FCM) determines 
that a collision may occur by using its integrated 
radar, it will provide a visual and audible warning on 
the combination meter to alert the driver of an 
impending danger, and controls the vehicle braking 
by increasing the brake fluid pressure or enhancing 
the brake pedal effort. If a collision is highly antici-
pated, the system will brake the vehicle automatically 
in order to avoid or reduce the injury or damage due 
to the collision accident.

NOTE: The warning timing can be switched between 
"FAR" and "NEAR" by operating the FCM ON/OFF 
switch.

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FORWARD COLLISION MITIGATION (FCM)

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-25

CONSTRUCTION DIAGRAM

MAIN COMPONENTS AND FUNCTIONS

ACC00406

ACC00407

AB

1

4

3

13

5, 15

2, 14

17

16

12

6

7

8

9

10

11

Name of part

Number Functional description

Switch/se
nsor

FCM ON/OFF switch

1

• Switches on and off the FCM.

• Switches the warning timing of the FCM between "FAR" 

and "NEAR".

Radar

2

Detects the distance from the vehicle travelling ahead, the 
position, relationship and the speed difference between the 
vehicle travelling ahead and your vehicle by using a radar 
wave.

Stop lamp switch

3

Sends the signal indicating whether the brake pedal is 
depressed or not to ETACS-ECU.

Steering wheel sensor

4

Detects a steering angle and a steering angular velocity, 
and send them to the ACC/FCM-ECU via the CAN 
communication.

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FORWARD COLLISION MITIGATION (FCM)

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-26

Actuator

Hydraulic unit

5

Drives the solenoid valve using the signal from ASC-ECU, 
and controls the brake fluid pressure for each wheel.

FCM warning display

6

Is displayed to request the driver to depress the brake pedal 
when a head-on collision is imminent.

FCM auto brake 
activation display

7

Is displayed after the FCM turns off.

FCM temporary failure 
display

8

Is displayed when the FCM is inactive temporarily.

FCM failure display

9

Is displayed when the FCM is defective.

FCM FAR display

10

Is displayed when the the FCM warning timing is switched to 
"FAR."

FCM NEAR display

11

Is displayed when the the FCM warning timing is switched to 
"NEAR."

FCM OFF display

12

Is displayed when the FCM is turned off.

Diagnosis connector

13

Sets the diagnosis code and establishes the communication 
with M.U.T.-III.

ACC/FCM-ECU

14

• Switches the FCM and/or the warning timing in 

accordance with the FCM ON/OFF switch status, which 
is received from the ETACS-ECU via CAN 
communication.

• Determines whether the FCM should be activated in 

accordance with the radar detection (distance or relative 
velocity) or the other vehicle information, which is 
received via CAN communication.

• Sends a forward collision mitigation brake system prefill 

request, a forward collision mitigation brake assist 
request, a forward collision mitigation brake request 
and/or the target deceleration during the automatic 
braking via CAN communication to the ACS-ECU.

• Sends FCM status information and a visible and audible 

warning request to the combination meter via CAN 
communication.

ASC-ECU

15

• Controls the brake fluid pressure according to the brake 

control request and the target deceleration speed, which 
is received from the ACC/FCM-ECU via CAN 
communication.

• Activate the stop lamp illumination circuit when the 

automatic braking is in progress.

• Performs a forward collision mitigation brake system 

prefill control according to the request, which is received 
from the ACC/FCM-ECU.

• Alleviate a threshold value and performs a forward 

collision mitigation brake assist control according to the 
request, which is received from the ACC/FCM-ECU.

Combination meter

16

Switches a display mode and sounds the buzzer according 
to the FCM status and/or the warning request (visible and 
audible), which is received from the ACC/FCM-ECU via 
CAN communication.

Name of part

Number Functional description

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FORWARD COLLISION MITIGATION (FCM)

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-27

SCHEMATIC DIAGRAM

NOTE: Dashed lines indicate the CAN bus line.

SYSTEM OPERATION

M2357000600060

Function

The FCM has the following functions:

ETACS-ECU

17

• Contains the stop lamp activation circuit when the FCM 

automatic braking is in progress.

• Sends a signal, which indicates FCM ON/OFF switch 

status and stop lamp switch status via hardwires, to the 
CAN bus lines.

Name of part

Number Functional description

ACC00415

· Forward collision mitigation
  brake system prefill request
· Forward collision mitigation
  brake assist request
· Forward collision mitigation 
  brake request
· Target deceleration speed
· LCD display and buzzer 
  sound request

· LCD display and buzzer sounding

· Forward collision mitigation
  brake system prefill control
· Forward collision mitigation
  brake assist control
· Forward collision mitigation 
  brake control

Stop lamp drive signal

Stop lamp
drive circuit

· Steering angle
· Steering angular velocity

ACC/FCM-ECU

(incorporating radar)

Steering wheel sensor

Diagnosis connector

ASC-ECU

ETACS-ECU

Solenoid valve

Stop lamp switch

Stop lamp

FCM ON/OFF switch

Combination meter

AB

Function

General

Forward collision warning function

Activate the visible warning on the combination meter and 
audible warning when the system determines that a forward 
collision is imminent.

Forward collision mitigation brake system 
prefill

Increases the brake fluid pressure in advance to enhance the 
response during the driver's braking operation when the 
system determines that a forward collision is imminent.

Forward collision mitigation brake assist

Advances the brake assist timing when the system 
determines that a forward collision is imminent.

Forward collision mitigation brake

Activates the automatic emergency braking to reduce the 
vehicle speed when the system determines that a forward 
collision is not avoidable.

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