Mitsubishi Evolution X. Manual — part 816

ASC OFF SWITCH

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-271

ASC OFF SWITCH

REMOVAL AND INSTALLATION

M1355020100109

INSPECTION

M1355020200106

ASC OFF SWITCH CONTINUITY CHECK

1. As shown in the figure, connect the circuit tester to the ASC

OFF switch as a single unit.

2. Check the continuity of when the ASC OFF switch is

pressed and released.

AC708758AB

1

3

2

4

Removal steps

1.

Instrument panel lower assembly
(Refer to GROUP 52A

−

Instrumental Lower Panel

P.52A-8

.)

2.

ASC OFF switch connector

3.

Instrument panel lower

4.

ASC OFF switch

Removal steps (Continued)

Item

ASC OFF
switch is
released (not
operated)

ASC OFF
switch is
pressed

Continuity
between
terminal No. 1
and No. 2

No continuity

Continuity exists
(2

Ω or less)

Continuity
between
terminal No. 3
and No. 4

Continuity exists Continuity exists

AC400824AB

HYDRAULIC UNIT

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-272

HYDRAULIC UNIT

REMOVAL AND INSTALLATION

M1355005600196

NOTE: ASC-ECU is located in the hydraulic unit.

CAUTION

When the hydraulic unit (integrated with ASC-ECU) is replaced, after turning the ignition switch ON
and OFF (vehicle information from ETACS-ECU is registered), always perform the calibration of steer-
ing wheel sensor, G and yaw rate sensor, brake fluid pressure sensor, cut valve, and inlet valve.
(Refer to

P.35C-266

,

P.35C-267

,

P.35C-268

, and

P.35C-269

.)

Pre-removal operation
• Strut tower bar removal (Refer to GROUP 42A − Strut

Tower Bar

P.42A-15

).

• Brake fluid draining.

Post-installation operation
• Brake fluid refilling and air bleeding (Refer to GROUP 35A

− On-vehicle Service, Brake Fluid Level Inspection and

Bleeding

P.35A-16

).

• Strut tower bar installation (Refer to GROUP 42A − Strut

Tower Bar

P.42A-15

).

• Hydraulic unit check (Refer to

P.35C-263

).

AC611928AB

4

1

9

4

10 ± 2 N·m
89 ± 17 in-lb

4

7

11

16 ± 3 N·m
12 ± 2 ft-lb

4

8

13 ± 2 N·m
111 ± 22 in-lb

2

6

3

10

5

24 ± 4 N·m
18 ± 3 ft-lb

11 ± 2 N·m
98 ± 17 in-lb

Removal steps

<<

A

>>

1.

ASC-ECU harness connector

2.

Wheel speed sensor harness
connector connection

3.

Wheel speed sensor harness clip
connection

>>

A

<< 4.

Brake tube connection

5.

Brake tube clip and body
connection

6.

Hydraulic unit (ASC-ECU) and
hydraulic unit bracket

<<

B

>>

7.

Hydraulic unit (ASC-ECU)

8.

Hydraulic unit bracket insulator

9.

Hydraulic unit bracket B

10. Suction pipe, liquid pipe and clip

connection

11. Hydraulic unit bracket A

Removal steps (Continued)

HYDRAULIC UNIT

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-273

REMOVAL SERVICE POINTS

.

<<A>> ASC-ECU WIRING HARNESS CONNEC-
TOR DISCONNECTION

Operate the lock lever as shown in the figure to disconnect the
ASC-ECU wiring harness connector.

.

<<B>> HYDRAULIC UNIT (ASC-ECU) REMOVAL

CAUTION

• Be careful when removing the hydraulic unit because it

is heavy.

• Never loosen the nuts and the bolts because the

hydraulic unit cannot be disassembled.

• Do not drop or shock the hydraulic unit.
• Do not turn the hydraulic unit upside down or lay down

the unit because the inner air becomes difficult to be
bled.

INSTALLATION SERVICE POINT

.

>>A<< BRAKE TUBE CONNECTION

Install the brake pipe to the hydraulic unit as shown in the fig-
ure.

1. From master cylinder (primary)
2. To front brake (RH)
3. To front brake (LH)
4. From master cylinder (secondary)
5. To rear brake (RH)
6. To rear brake (LH)

AC708791

AB

Lock lever

ZC601084

AC609321AB

6 5

1

3

2

4

WHEEL SPEED SENSOR

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-274

WHEEL SPEED SENSOR

REMOVAL AND INSTALLATION

M1355005300162

CAUTION

The vehicle speed detection encoder collects any metallic particle easily, because it is magnetized.
Make sure that the encoder should not collect any metallic particle. Check that there is not any trou-
ble prior to reassembling it.

AC704283AB

1

3

3

4

6

6

1

4

8

5

9

2

2

5

8

7

7

9

<Rear>

<Front>

13 ± 2 N·m
111 ± 22 in-lb

11 ± 2 N·m
98 ± 17 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb

13 ± 2 N·m
111 ± 22 in-lb

11 ± 2 N·m
98 ± 17 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb

11 ± 2 N·m
98 ± 17 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb

11 ± 2 N·m
98 ± 17 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb

8.5 ± 1.5 N·m
76 ± 13 in-lb