Mitsubishi Evolution X. Manual — part 813

DIAGNOSIS

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-259

CHECK AT ECU TERMINALS

M1355001700191

.

TERMINAL VOLTAGE CHECK

Required Special Tool:
MB991997: ASC Check Harness
1. Operate the lock lever as shown in the figure to disconnect

the ASC-ECU wiring harness connector.

2. Connect special tool ASC Check Harness (MB991997) to

measure the voltage between each check connector
terminal and the ground terminal (No. 16 or 47).

AC708791

AB

Lock lever

AC401192 AG

ASC-ECU

MB991997

A-05 ASC-ECU
harness connector

Check harness

DIAGNOSIS

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-260

.

RESISTANCE AND CONTINUITY BETWEEN
HARNESS-SIDE CONNECTOR TERMINALS

Required Special Tool:
MB991997: ASC Check Harness
1. Operate the lock lever as shown in the figure to disconnect

the ASC-ECU wiring harness connector.

Terminal
No.

Check item

Check conditions

Normal
conditions

1

Motor power supply

Ignition switch: ON (OFF)

Approximately
battery voltage

2

ASC-ECU power supply

Ignition switch: ON (OFF)

Approximately
battery voltage

22

G and yaw rate sensor power
supply

Ignition switch: ON

Approximately
battery voltage

32

Solenoid valve power supply

Ignition switch: ON (OFF)

Approximately
battery voltage

34

Wheel speed sensor (FR) power
supply

Ignition switch: ON

Approximately
battery voltage

36

Wheel speed sensor (RL) power
supply

Ignition switch: ON

Approximately
battery voltage

43

Wheel speed sensor (RR) power
supply

Ignition switch: ON

Approximately
battery voltage

45

Wheel speed sensor (FL) power
supply

Ignition switch: ON

Approximately
battery voltage

AC708791

AB

Lock lever

DIAGNOSIS

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-261

2. When performing the continuity check, turn the ignition

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

3. Check for continuity between terminals shown in the chart

below.

4. Terminal layout is shown in the figure.

AC400817CO

ASC-ECU

MB991997

A-05 ASC-ECU
harness connector

Check harness

Terminal No.

Signal

Normal conditions

16

− body ground

Ground

Continuity exists (2

Ω or

less)

47

− body ground

Ground

Continuity exists (2

Ω or

less)

SPECIAL TOOLS

TSB Revision

ACTIVE SKID CONTROL SYSTEM (ASC)

35C-262

SPECIAL TOOLS

M1355005800101

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
Daimler 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, service data 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