Mitsubishi Outlander XL. Manual — part 582

DIAGNOSIS

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: Vehicle Communication Interface

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

Inspection Procedure 1: Scan tool MB991958 cannot
communicate with the Electronic Control AWD System. Refer to
ECU power supply circuit system check P.27C-75.

DATA LIST REFERENCE TABLE

M12704100035USA0000010000

M.U.T.-III can read the following items among various
control data (input data from each ECU and switch)
used by the electronic control AWD system.

SYSTEM IS NORMAL.

Item No.

Check item

Check condition

Normal condition

01

Vehicle

speed

(AWD calculated
value)

Perform a test run of the vehicle.

The speedometer
display and the
M.U.T.-III display
almost agree with
each other.

02

Ignition

power

supply voltage

Ignition switch: ON

0 - 16 V

03

Coupling torque

Ignition switch: ON

0 - 1200 N·m (0 -
885 ft-lb)

04

Coupling current
(command
value)

｠

Drive mode selector: AWD

｠

Perform a test run of the vehicle.

The

current

changes between
0

and

5

A.

(Command value
and actual value
agree with each
other.)

05

Coupling current
(monitor value)

｠

Drive mode selector: AWD

｠

Perform a test run of the vehicle.

The

current

changes between
0

and

5

A.

(Command value
and actual value
agree with each
other.)

06

Coupling
temperature

Perform a test run of the vehicle.

0 - 200°C (0 - 392°
F)

07

CAN

system

(ABS/ASC)

Ignition switch:
ON

When ASC-ECU data is correctly
received

OK

When ASC-ECU data reception error
occurs

No reception

ELECTRONIC CONTROL AWD

27C-87

DIAGNOSIS

Item No.

Check item

Check condition

Normal condition

08

CAN

system

(engine)

Ignition switch:
ON

When engine-ECU data is correctly
received

OK

When engine-ECU data reception error
occurs

No reception

09

CAN

system

(ETACS)

Ignition switch:
ON

When ETACS-ECU data is correctly
received

OK

When ETACS-ECU data reception error
occurs

No reception

10

FWD SW

Ignition switch:
ON

Drive mode selector: FWD

OFF/ON

11

LOCK SW

Ignition switch:
ON

Drive mode selector: LOCK

OFF/ON

15

AWD mode

Ignition switch:
ON

Shifting in progress

-

AWD LOW
AWD HIGH
FWD
Neutral
AWD (part-time)

16

FL wheel speed
sensor

Perform a test run of the vehicle.
Check that there is difference between the right wheel
speed and the left wheel speed when the vehicle turns.

The speedometer
display and the
M.U.T.-III display
almost agree with
each other.

17

FR wheel speed
sensor

18

RL wheel speed
sensor

19

RR wheel speed
sensor

21

Engine speed

Perform a test run of the vehicle.

The

tachometer

display and the
M.U.T.-III display
almost agree with
each other.

23

Ignition position

｠

LOCK

｠

OFF

｠

ACC

｠

ON

｠

START

-

24

Engine torque

Perform a test run of the vehicle.

The

torque

changes between
0 and 300 N·m (0 -
221 ft-lb).

26

Throttle position Ignition switch:

ON

Release the accelerator pedal.

Approximately 0%

Gradually depress the accelerator
pedal.

0 - 100%

27C-88

ELECTRONIC CONTROL AWD

DIAGNOSIS

Item No.

Check item

Check condition

Normal condition

Fully depress the accelerator pedal.

Approximately
100%

(within

100%)

28

Limited torque

-

0 - 2500 N·m (0 -
1844 ft-lb)

SYSTEM SHUT-DOWN

M.U.T.-III display data does not agree with the actual
data when AWD-ECU deactivates the AWD control
function by the fail-safe function.

ACTUATOR TEST TABLE

M12704100036USA0000010000

M.U.T-III can be used to forcibly activate the electronic
control coupling and indicators (AWD indicator and
LOCK indicator) in the combination meter according
to the following items.

NOTE:

｠

If AWD-ECU is deactivated by the fail-safe function,
no actuator test can be performed.

｠

As for the item No. 01, the chassis dynamometer is
used to check the AWD torque. A simple AWD
status check method, however, can be applied by

checking whether a tight corner braking
phenomenon appears during driving.

When the item No. 01 is checked, the speed
difference between front and rear wheels must be
5 km/h (3 mph) or lower. If the speed difference
exceeds 5 km/h (3mph), AWD-ECU changes from
the actuator test mode to the normal control
mode.

Actuator test specifications

Item No.

Check item

Driven component

Operating
duration

01

AWD coupling control torque

Drive the electronic control coupling with
the control torque of 0 N·m to 730 N·m (0
to 538 ft-lb).

Maximum
10 seconds

02

AWD mode

AWD LOCK

Maximum 1
minute

AWD

Maximum 1
minute

FWD

Maximum 1
minute

FREEZE FRAME DATA REFERENCE TABLE

M12704100037USA0000010000

M.U.T-III can be used to read the freeze frame data
(the driving status when the failure occurs) at each
diagnosis code detection.

FREEZE FRAME DATA SPECIFICATIONS

Item No.

Item

Data display

01

Odometer

Km (mph)

ELECTRONIC CONTROL AWD

27C-89

DIAGNOSIS

Item No.

Item

Data display

02

Ignition cycle

-

03

Coupling torque

N·m (ft-lb)

04

Current trouble accumulative time

min

06

Coupling temperature

°C (°F)

07

CAN communication (ABS/ASC) error flag OFF/ON

08

CAN communication (engine) error flag

OFF/ON

09

CAN communication (ETACS) error flag

OFF/ON

15

AWD mode

FWD
AWD
AWD LOCK

16

FL wheel speed sensor

xxxx km/h (mph)

17

FR wheel speed sensor

xxxx km/h (mph)

18

RL wheel speed sensor

xxxx km/h (mph)

19

RR wheel speed sensor

xxxx km/h (mph)

CHECK AT ECU TERMINALS

M12704100038USA0000010000

ZC3051060000

C-128

Terminal
No.

Check item

Check condition

Normal condition

1

Current command value
of electronic control
coupling solenoid

｠

Drive mode selector: AWD

｠

Perform a test run of the vehicle.

0 to 5 A

27C-90

ELECTRONIC CONTROL AWD

DIAGNOSIS