Mitsubishi Montero (2004+). Manual — part 1124

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-207

STEP 2. Check the harness wires between combination
meter connector D-03 terminal 51 and M-ASTC-ECU
connector E-121 terminal 82.
NOTE: After inspecting combination meter connector combina-
tion meter connector D-03, intermediate connector E-122 and
M-ASTC-ECU connector E-121, inspect the wire. If combina-
tion meter connector D-03, intermediate connector E-122 and
M-ASTC-ECU connector E-121 are damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection

P.00E-2

. Then go to Step 3.

Q: Is the harness wire between combination meter

connector D-03 terminal 51 and M-ASTC-ECU connector
E-121 terminal 82 damaged?
YES : Repair it and then go to Step 3.
NO : Replace the combination meter (printed circuit board)

and then go to Step 3.

AC204687AD

CONNECTOR: D-03

D-03 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AC203901

AC204627AR

CONNECTOR: E-121

E-121

E-121

HARNESS CONNECTOR:
COMPONENT SIDE

AC204548

E-122(L)

AP

CONNECTOR: E-122

2

1

3

13

12

14

21

10

5

4

6

16

15

17

7 8 9

19

18

20

11

22

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-208

STEP 3. Retest the system.
Q: Does the Active skid control system OFF indicator light

turn off 3 seconds after start-up?
YES : The procedure is complete.
NO : Return to Step 1.

DATA LIST REFERENCE TABLE

M1353001200026

The M-ASTC-ECU also controls the ABS system.
For the Data list reference table, refer to GROUP
35B, Data List Reference Table

P.35B-116

.

ACTUATOR TEST REFERENCE

M1353001300034

The scan tool activates the following actuators for
testing.
NOTE: If the M-ASTC-ECU is inoperative, actuator
testing cannot be carried out.

NOTE: Actuator testing is only possible when the
vehicle is stationary. If the vehicle speed during actu-
ator testing exceeds 10 km/h (6 mph), forced actua-
tion will be canceled.

ACTUATOR TEST SPECIFICATIONS

MUT-III SCAN
TOOL DISPLAY

ITEM
NO.

CHECK ITEM

PARTS TO BE
ACTIVATED

ACTIVATION WHEN THE
SYSTEM FAILS

FR ACTIVE SKID
CONTROL
SYSTEM VALVE

05

Solenoid valve for
front-right wheel

ACTIVE SKID CONTROL
SYSTEM control solenoid
valves for the respective
channel

Disabled

FL ACTIVE SKID
CONTROL
SYSTEM VALVE

06

Solenoid valve for
front-left wheel

RR ACTIVE SKID
CONTROL
SYSTEM VALVE

07

Solenoid valve for
rear-right wheel

RL ACTIVE SKID
CONTROL
SYSTEM VALVE

08

Solenoid valve for
rear-left wheel

HBB MOTOR

11

Pump motor

Drives the pump motor for
one second.

Disabled

HBB BUZZER

12

Buzzer

Drives the buzzer for
three seconds.

Disabled

ENG. TRQ DOWN 13

Engine

Engine torque reduction

Disabled

ST SNSR: 0

14

Steering wheel sensor Neutral point in steering

wheel sensor

Enabled

YAWRATE SNS: 0 15

Yaw rate sensor

Neutral point in yaw rate
sensor

Enabled

G SNSR: 0

16

G sensor

Neutral point in G sensor Enabled

BRKE WARN LMP 23

Brake warning light

Blink two times the brake
warning light.

Enabled (However,
disabled when the brake
warning light cannot be
activated)

M-ASTC DIAGNOSIS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-209

CHECK AT M-ASTC-ECU

M1353001400020

The M-ASTC-ECU also controls the ABS system.
For the terminal voltage reference table, refer to
GROUP 35B, Check at M-ASTC-ECU

P.35B-120

.

ABS FAIL LMP

24

ABS warning light

Blink two times ABS
warning light

Enabled (However,
disabled when the ABS
warning light cannot be
activated)

ACTIVE SKID
CONTROL
SYSTEM OP
LAMP

25

Active skid control
system operation
indicator light/Active
traction control system
operation indicator
light

Blink two times the Active
skid control system
operation indicator
light/Active traction
control system operation
indicator light

Enabled (However,
disabled when the Active
skid control system
operation indicator
light/Active traction control
system operation indicator
light cannot be activated)

ACTIVE SKID
CONTROL
SYSTEM OFF
LAMP

26

Active skid control
system OFF indicator
light

Blink two times the Active
skid control system OFF
indicator light

Enabled (However,
disabled when the Active
skid control system OFF
indicator light cannot be
activated)

MUT-III SCAN
TOOL DISPLAY

ITEM
NO.

CHECK ITEM

PARTS TO BE
ACTIVATED

ACTIVATION WHEN THE
SYSTEM FAILS

AC205660

ON

OFF

ON

OFF

ON

OFF

3s

ITEM No. 05 - 08 DRIVE PATTERN

CONTROL SOLENOID
VALVE IN

CONTROL SOLENOID
VALVE OUT

SELECT SOLENOID
VALVE
(SA1, SA2, SA3, STR)

CORRESPONDING
WHEEL BRAKE PRESSURE

HOLD

AB

SPECIAL TOOLS

TSB Revision

MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM

35C-210

SPECIAL TOOLS

M1353000600032

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III Sub Assembly

A: Vehicle

communication
interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main harness

A (Vehicles with CAN
communication
system)

D: MUT-III main harness

B (Vehicles without
CAN communication
system)

E: MUT-III main harness

C (for Daimler Chrysler
models only)

F: MUT-III measurement

adapter

G: MUT-III trigger

harness

MB991824-KIT
NOTE: G: MB991826
MUT-III trigger harness is
not necessary when
pushing V.C.I. ENTER
key.

Checking diagnostic
trouble codes

CAUTION

MUT-III main harness B
(MB991911) should be
used. MUT-III main
harness A and C should
not be used for this
vehicle.

MB991348
Test harness set

MB991496-OD

For checking of G and
yaw rate sensor

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

MB991348