Mitsubishi Outlander GS45X. Manual - part 462

DIAGNOSIS

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-275

.

CONTINUITY CHECK AT WIRING HARNESS-SIDE 
CONNECTOR

Required Special Tool:
MB991997: ASC Check Harness
1. When performing the continuity check, turn the ignition 

switch to LOCK (OFF) position, connect the special tool 
ASC check harness (MB991997) as shown in the figure, and 
disconnect the ASC-ECU connector.

2. Check for continuity between terminals shown in the chart 

below.

3. Terminal layout is shown in the figure.

36

Wheel speed sensor (RL) power 
supply

Ignition switch: ON

Approximately 
system voltage

43

Wheel speed sensor (RR) power 
supply

Ignition switch: ON

Approximately 
system voltage

45

Wheel speed sensor (FL) power 
supply

Ignition switch: ON

Approximately 
system voltage

Terminal No.

Check item

Check condition

Normal condition

AC611137BM

ASC-ECU

MB991997

A-02 ASC-ECU 
harness connector

Check harness

Terminal No.

Signal

Normal conditions

16 

− body ground

Earth

Continuity exists (2

Ω or 

less)

47 

− body ground

Earth

Continuity exists (2

Ω or 

less)

SPECIAL TOOLS

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-276

SPECIAL TOOLS

M1355005800338

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 

measurement 
adapter

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

M.U.T.-III main harness A 
(MB991910) should be used. 
M.U.T.-III main harness B and C 
should not be used for this 
vehicle.
ASC check (Diagnostic trouble 
code display, data list display and 
calibration by scan tool )

MB991997

ASC check harness

Voltage inspection at ASC-ECU 
terminals

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

a

b

c

d

e

f

g

DO NOT USE

MB991997

ON-VEHICLE SERVICE

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-277

ON-VEHICLE SERVICE

WHEEL SPEED SENSOR OUTPUT CURRENT MEASUREMENT

M1355027300041

Refer to GROUP 35B 

− Wheel Speed Sensor Output 

Current Measurement 

P.35B-184

.

HYDRAULIC UNIT CHECK

M1355006100280

Required Special Tools:

• MB991958: scan tool Sub Assembly

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: scan tool USB Cable

• MB991910: scan tool Main Harness A (Vehicles with 

CAN communication system)

1. Raise the vehicle using a jack and support the specified 

points with a rigid rack.

MB991223

a. MB991219
b. MB991220
c. MB991221
d. MB991222

Harness set

a. Test harness
b. LED harness
c. LED harness 

adaptor

d. Probe

General service tools Continuity check and voltage 

measurement at harness wire or 
connector for loose, corroded or 
damaged terminals, or terminals 
pushed back in the connector.

a. Connector pin contact 

pressure inspection

b. Power circuit inspection
c. Power circuit inspection
d. Commercial tester connection

MB992006
Extra fine probe

−

Continuity check and voltage 
measurement at harness wire or 
connector for loose, corroded or 
damaged terminals, or terminals 
pushed back in the connector.

MB991709
Wiring harness set

−

Output current measure at the 
wheel speed sensor

Tool

Tool number and 
name

Supersession

Application

MB991223

a

d

c

b

DO NOT USE

BA

MB992006

ON-VEHICLE SERVICE

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ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-278

CAUTION

Before connecting or disconnecting scan tool, always turn 
the ignition switch to the LOCK (OFF) position.
2. Before setting scan tool, 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 scan tool while depressing the brake 
pedal. When carrying out the actuator tests No.05 to 08, 
perform the actuator tests using scan tool 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 light 
flashes at a rate of 2 Hz.

•

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

•

After the actuator test has been performed, the ABS 
warning light, brake waning light, ASC ON indicator light, 
and ASC OFF indicator light illuminate until the ignition 
switch is turned to ON again or the communication 
between scan tool and ASC-ECU is terminated.