Mitsubishi Outlander (2013+). Manual — part 478

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-87

NOTE: While ASC-ECU is disabled by the diagnostic function, the M.U.T.-III displayed data is different from
the actual measurement.

ACTUATOR TEST TABLE

M1355001600558

Using M.U.T.-III, the following actuators can be forci-
bly operated:

NOTE:

.

•

ABS and ASC are operated by ASC-ECU.

•

When ASC-ECU is disabled due to the fail-safe
function, the actuator test cannot be performed.

•

The actuator test can be performed only when
the vehicle is stationary.

•

While the actuator test is performed, the ABS
warning lamp flashes at a rate of 2 Hz.

•

While the actuator test is performed, the ASC
warning display and ASC OFF display illuminate.

•

After the actuator test has been performed, the
brake warning lamp, ABS warning lamp, ASC
operation display, and ASC OFF display illumi-
nate until the ignition switch is turned to ON again
or the communication between M.U.T.-III and
ASC-ECU is terminated.

Actuator test specifications

105

Power supply voltage (input)

System voltage (10 to 18 V
ASC operable range)

120

Parking brake switch
(Input)

When the parking brake lever is pulled
up:

ON

When the parking brake lever is
released:

OFF

128

A.S.C./TCL off switch
(input)

The ASC OFF switch is pressed.

ON

The ASC OFF switch is not operated.

OFF

138

ESS request

Not used.

139

Idle stop

Not used.

140

A.S.C./TCL mode
(S-AWC)

When the ASC is activated

ASC ON

When the ASC is deactivated by the
ASC OFF switch.

ASC OFF

When the ASC fails

N/A

Item No. Check item

Check condition

Normal condition

Item No.

Check item

Driven component

01

FL wheel ABS drive

Solenoid valve for the corresponding
channel of the hydraulic unit and pump
motor (simplified inspection mode)

02

FR wheel ABS drive

03

RL wheel ABS drive

04

RR wheel ABS drive

05

FL wheel TCL drive

06

FR wheel TCL drive

07

RL wheel TCL drive

08

RR wheel TCL drive

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-88

Operation pattern of items 01 to 08

AC400776

1second

2 seconds

Approx. 0.05
second

Approx. 0.01
second

AJ

End

M.U.T.-III actuator test
(Item No.05, 06, 07, 08) start

End

Increase in pressure

Steady pressure

Reduction in pressure

Increase in pressure

Steady pressure

Reduction in pressure

Drive

Stop

Cut valve,
Suction valve
(TCL)

Solenoid valve
(ABS)

Pump motor

M.U.T.-III actuator test
(Item No.01, 02, 03, 04) start

CHECK AT ECU TERMINALS

M1355001700748

TERMINAL VOLTAGE CHECK

ACB04918

AB

Lock lever

1. Operate the lock lever to disconnect the

ASC-ECU harness connector as shown in the
figure.

2. Disconnect the ASC-ECU connector, and

measure the voltages between earth terminal
No.13 or No.38 and each respective terminal.

3. The terminal layout is shown in the illustration.

09

Engine TCL drive

Outputs the engine torque control signal
(engine torque = 0 N

⋅m) to the engine

ECU for three seconds.

10

ESS test mode

Not used.

Item No.

Check item

Driven component

ACB05853

Termin
al No.

Terminal
code

Check item

Checking requirements

Normal condition

1

+BM

Motor power supply

Always

Battery voltage

2

−5

−

−

−

−

6

IG1

ASC-ECU power supply(IG1)

Ignition switch: "ON"

Battery voltage

Ignition switch: "OFF"

1 V or less

7

−9

−

−

−

−

10

CANL

CAN bus line

−

−

11

CANH

CAN bus line

−

−

12

−

−

−

−

13

GND1

Earth

Always

1 V or less

14

−24

−

−

−

−

25

+BV

Solenoid valve power supply

Always

Battery voltage

26

FR-

Wheel speed sensor (FR)
signal

Drive vehicle

Approximately
system voltage

27

FR+

Wheel speed sensor (FR)
power supply

Ignition switch: "ON"

Approximately
system voltage

28

−

−

−

−

29

RL+

Wheel speed sensor (RL)
power supply

Ignition switch: "ON"

Approximately
system voltage

30

RL-

Wheel speed sensor (RL)
signal

Drive vehicle

Approximately
system voltage

31, 32

−

−

−

−

33

RR-

Wheel speed sensor (RR)
signal

Drive vehicle

Approximately
system voltage

34

RR+

Wheel speed sensor (RR)
power supply

Ignition switch: "ON"

Approximately
system voltage

35

−

−

−

−

36

FL+

Wheel speed sensor (FL)
power supply

Ignition switch: "ON"

Approximately
system voltage

37

FL-

Wheel speed sensor (FL)
signal

Drive vehicle

Approximately
system voltage

38

GND2

Earth

Always

1 V or less

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-89

ON-VEHICLE SERVICE

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-90

CONTINUITY CHECK AT WIRING
HARNESS-SIDE CONNECTOR

ACB04918

AB

Lock lever

1. Operate the lock lever to disconnect the

ASC-ECU harness connector as shown in the
figure.

2. Check the resistance and continuity between the

terminals indicated in the table below.

3. The terminal layout is shown in the illustration.

ACB05853

Terminal No.

Signal

Normal condition

13

− body earth

Earth

Continuity exists (2

Ω or

less)

38

− body earth

Earth

Continuity exists (2

Ω or

less)

ON-VEHICLE SERVICE

WHEEL SPEED SENSOR OUTPUT
CURRENT MEASUREMENT

M1355027300029

Refer to GROUP 35B

− Wheel speed sensor output

current measurement .

HYDRAULIC UNIT (HU) CHECK

M1355006100332

1. Raise the vehicle using a jack and support the

specified points with a rigid rack.

CAUTION

Before connecting or disconnecting M.U.T.-III,
always turn the ignition switch to the LOCK
(OFF) position.

2. Before setting M.U.T.-III, turn the ignition key to

the LOCK (OFF) position.

3. Confirm that the selector lever is in the "N"

position, and then start the engine.

4. When carrying out the actuator tests No.01 to 04,

perform the actuator tests using M.U.T.-III while
depressing the brake pedal. When carrying out
the actuator tests No.05 to 08, perform the
actuator tests using M.U.T.-III without depressing
the brake pedal. When carrying out the actuator
tests, rotate the wheel by hands to confirm that
the braking force changes.

NOTE:

.

•

While performing the actuator test, the ABS
warning lamp flashes at a rate of 2 Hz.

•

When ASC-ECU is disabled due to the
fail-safe function, the M.U.T.-III actuator test
cannot be performed.

•

After the actuator test has been performed,
the ABS warning lamp, brake waning lamp,
ASC ON indicator lamp, and ASC OFF indica-
tor lamp illuminate until the ignition switch is
turned to ON again or the communication
between M.U.T.-III and ASC-ECU is termi-
nated.