Mitsubishi Outlander XL. Manual - part 1284

GENERAL INFORMATION

M23501000001USA0000010000

FEATURES

The  4ABS  ensures  directional  stability  and  control
during hard braking.
This ABS uses a 4-sensor system that controls all four
wheels independently of each other.

｠

EBD*1(Electronic Brake-force Distribution system)
control can obtain ideal rear wheel brake force.

｠

The  magnetic  encoder  for  wheel  speed  detection
has been installed instead of the rotor as the wheel
speed sensor.

｠

For  wiring  harness  saving  and  secure  data
communication, CAN*2bus has been adopted as a
tool of communication with another ECU.

｠

Fail-safe  function  which  ensures  that  safety  is
maintained.

｠

Diagnostic  function  which  provides  improved
serviceability.

NOTE:

｠

*1: EBD (Electronic Brake-force Distribution)

｠

*2: For further details on CAN communication, refer
to GROUP 54D, CAN P.54D-2.

｠

On vehicles with ASC, the ABS system is controlled
by the ASC-ECU. For the system construction, refer
to

 GROUP

 35C,

 General

Information P.35C-2. (Vehicle with ASC)

SPECIFICATIONS

Item

Specification

ABS control type

4-sensor

Wheel speed sensor

Magnetic encoder

Front

86 (N-pole: 43, S-pole: 43)

Rear

86 (N-pole: 43, S-pole: 43)

Type

Semiconductor type

35B-2

FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)

GENERAL INFORMATION

CONSTRUCTION DIAGRAM

ZC600661

CHECK

SE R VIC E
         RE

Q UIRE D

ASC 
OFF

0000

6

7

7

6

1

2

1

2

3

4 <AWD>, 5, 9

8

6

7

<Vehicles for CANADA>

<Except vehicles for CANADA>

Name of part

Num
ber

Outline of function

Sensor

Wheel speed sensor

1

Outputs the frequency signal in proportion to the rotation speed
of each wheel to ABS-ECU.

Magnetic  encoder  for
wheel speed detection

2

When the magnetic encoder for wheel speed detection (a plate
on which north and south pole sides of the magnets are arranged
alternately) rotates, the wheel speed sensor outputs frequency
pulse signal in proportion to each wheel speed.

Stoplight switch

3

Outputs  the  signal  indicating  whether  the  brake  pedal  is
depressed or not to ABS-ECU.

FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)

35B-3

GENERAL INFORMATION

Name of part

Num
ber

Outline of function

G sensor <AWD>

4

Incorporated  in  ABS-ECU,  and  detects  the  longitudinal
acceleration of the vehicle.

Actuator Hydraulic unit

5

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

ABS warning light

6

Informs the driver of the system status by illuminating, flashing,
or turning off the warning light according to the signal from ABS-
ECU.

Brake warning light

7

Used as the warning light for the parking brake, brake fluid level,
and  EBD  control.  Informs  the  driver  of  the  system  status  by
illuminating or turning off the warning light according to the signal
from ABS-ECU.

Data link connector

8

Outputs  the  diagnostic  trouble  code  and  establishes  the
communication with the scan tool.

ABS-ECU

9

Controls  actuators  (described  above)  based  on  the  signals
coming from each sensor.
Controls the self-diagnosis and fail-safe functions.
Controls the diagnostic function (scan tool compatible).

35B-4

FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)

GENERAL INFORMATION

SYSTEM CONFIGURATION DIAGRAM

ZC6006660000

ABS-ECU

FR solenoid valve (OUT)

FR solenoid valve (IN)

FL solenoid valve (OUT)

FL solenoid valve (IN)

RR solenoid valve (OUT)

RR solenoid valve (IN)

RL solenoid valve (OUT)

RL solenoid valve (IN)

ETACS-ECU

Wheel speed sensor (FL)

Wheel speed sensor (RL)

Wheel speed sensor (RR)

Wheel speed sensor (FR)

Stop light switch

ABS-ECU power supply

Data link connector

Stoplight switch

Hydraulic 
unit

Rear-right
wheel (RR)

Rear-left 
wheel (RL)

Wheel 
speed 
sensor 
(RL)

Wheel 
speed 
sensor 
(RR)

Wheel 
speed 
sensor 
(FL)

Wheel 
speed 
sensor 
(FR)

Front-right
wheel (FR)

Front-left
wheel (FL)

Combination meter and multi 
information display 
· ABS warning light 
· Brake warning light

CAN-BUS LINE

CAN-BUS LINE

FOUR-WHEEL ANTI-LOCK BRAKE SYSTEM (4ABS)

35B-5

GENERAL INFORMATION