Mitsubishi Outlander GS45X. Manual — part 1320

GENERAL INFORMATION

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ELECTRONIC CONTROL AWD

27C-3

CONSTRUCTION DIAGRAM

.

AC901131AC

ABS/ASC-ECU

Electronic
control
coupling

Engine-ECU

Combination meter

Drive mode
selector

ETACS-ECU

AWD-ECU

Data link
connector

Drive mode
selector

Drive mode indicator

GENERAL INFORMATION

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ELECTRONIC CONTROL AWD

27C-4

SYSTEM COMPONENT AND FUNCTION

Parts name

Functional description

Engine control module

Sends the following signals required by AWD-ECU via CAN
communication.

• Engine torque signal

• Throttle position signal

• Engine speed signal

ABS/ASC-ECU

Sends the following signals required by AWD-ECU via CAN
communication.

• ABS sensor signal (wheel speed signal) [4 wheels]

• ABS operation signal

• AWD limitation torque signal

Drive mode selector

Sends the drive mode switch signal [FWD/AWD/LOCK] to AWD-ECU.

ETACS-ECU

• Receives the drive mode switch signal [FWD/AWD/LOCK] from

AWD-ECU and flashes the indicators (AWD operation indicator and
LOCK indicator) in the combination meter.

• Flashes the indicators (AWD operation indicator and LOCK indicator) in

the combination meter in case of failure.

Controls diagnostic function (Compatible with scan tool).

AWD-ECU

Calculates the optimum differential limitation force judging from the vehicle
condition and present drive mode based on the signals from each ECU and
switch, and controls the current value flown to the electronic control
coupling.
Controls the indicators (AWD operation indicator and LOCK indicator) in
the combination meter.
Controls the self-diagnostic function and fail-safe function.
Controls diagnostic function (Compatible with scan tool).

Electronic control coupling

Transmits the torque corresponding to the current value controlled by
AWD-ECU to the rear wheels.

Drive mode indicator

• AWD operation indicator

• LOCK indicator

Integrated in the combination meter, and indicates the selected drive mode
(Not displayed in FWD mode).

• When the AWD operation indicator and LOCK indicator flash alternately,

the system automatically enters the front wheel drive mode to protect
the drive system components, and the drive mode changeover with the
drive mode selector becomes unavailable.

• When the drive system generates heat, the AWD operation indicator

flashes.

• The indicator light operation signal from AWD-ECU is sent to the

combination meter via ETACS-ECU using CAN communication.

Data link connector

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

SERVICE PRECAUTIONS

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ELECTRONIC CONTROL AWD

27C-5

SERVICE PRECAUTIONS

M1274005600057

.

TOWING

• The vehicle must be towed by a tow truck with all

four wheels raised. If a vehicle is towed with only
the front or rear wheels are raised, the drive sys-
tem components may be damaged or the vehicle
may jump out of a tow truck (cart).

• Even if the drive mode selector is switched to

"FWD," the vehicle cannot be towed with only the
front or rear wheels raised. The vehicle must be
towed by a tow truck with all four wheels raised.

.

WHEEL AND TIRE

Normally, all four tires must be same in size, in type,
and in brand, except for when a spare tire is tempo-
rarily used. If a wheel or tire with incorrect size is
installed or tire pressure is excessively out of the
specified value, the electronic control AWD system
will not operate correctly. In addition, drive system
components may be damaged.

.

DRIVING ON SANDY OR SLUSHY ROAD

As the vehicle is intended for on-road use, long-time
driving on a sandy or slushy road must be avoided.
When the vehicle is driven on a sandy or slushy road
for a long time, the fail-safe function of the electronic
control AWD system tends to enter the protective
control mode which switches the control from AWD
to FWD gradually in order to protect the drive sys-
tem, and the indicators ("AWD" and "LOCK") tends to
illuminate.

.

SPEED MEASUREMENT

When using the chassis dynamometer to measure
the speed, always measure it under synchronized
condition between front wheels’ speed and rear
wheels’ speed. If the speed is measured with front
wheels or rear wheels fixed, or with speed difference
between front wheels and rear wheels, drive system
components may be damaged.

SERVICE SPECIFICATIONS

M1274000100080

SEALANT

M1272000500156

Item

Standard value

Electronic control coupling solenoid
resistance

Ω [at 20 °C (68°F)]

Electronic control 4WD 2.2

− 4.0

S-AWC

1.6

− 3.7

Electronic control coupling stud bolt length mm (in)

22.3

− 25.1 (0.88 − 0.99)

Item

Specified sealant

Remark

Differential carrier and electronic
control coupling mounting part

ThreeBond 1215, 1216, 1217 or
equivalent

Semi-drying sealant

SPECIAL TOOLS

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ELECTRONIC CONTROL AWD

27C-6

SPECIAL TOOLS

M1274000200054

Tool

Tool number and name Supersession

Application

MB991958

a: MB991824
b: MB991827
c: MB991910
d: MB991911
e: MB991914
f: MB991825
g: MB991826

M.U.T.-III Sub Assembly

a: Vehicle

communication
interface (V.C.I.)

b: M.U.T.-III USB Cable
c: M.U.T.-III Main

Harness A (Vehicles
with CAN
communication
system)

d: M.U.T.-III Main

Harness B (Vehicles
without CAN
communication
system)

e: M.U.T.-III main

harness C (for
Chrysler models only)

f: M.U.T.-III Adapter

Harness

g: M.U.T.-III Trigger

Harness

MB991824-KIT
NOTE: G: MB991826
M.U.T.-III Trigger Harness
is not necessary when
pushing V.C.I. ENTER
key.

CAUTION

For vehicles with CAN
communication, use
M.U.T.-III main harness
A to send simulated
vehicle speed. If you
connect M.U.T.-III main
harness B instead, the
CAN communication
does not function
correctly.
Check of the electronic
control AWD (the
diagnostic trouble code
display, service data
display, freeze frame data
display, actuator test with
scan tool)

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

Do not use

a

b

c

d

e

f

g

Do not use