Mitsubishi 380. Manual - part 331

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TRACTION CONTROL SYSTEM (TCL)

13C-44

• Connect oscilloscope to FL sensor signal terminal (5) at 

ABS-ECU (A-02)

• Connect oscilloscope to FR sensor signal terminal (10) 

at ABS-ECU (A-02)

• Connect oscilloscope to RL sensor signal terminal (17) 

at ABS-ECU (A-02)

• Connect oscilloscope to RR sensor signal terminal (19) 

at ABS-ECU (A-02)

(7) Recommended Oscilloscope setting:

•  Y-axis:  2Volts

•  X-axis:  100ms

(8) Turn the ignition switch to the "ON" position.
(9) Turn wheel by hand at approximately 1 revolution per 

second (r/sec) or drive on brake dynamometer at 5km/h.

The measurement reading of the active wheel speed sen-
sors on the oscilloscope should correspond to figure 3 
below. 

NOTE: If the oscilloscope signal shape is correct and wheel 
sensor air gap is within specification, but the voltage values are 
either higher or lower as shown in the table below, the wheel 
speed sensor must be changed. 

1.50

1.00

0.50

0.00

U-CH1

0

20

40

60

80

100

ms

V

Test Procedure:   Universal Oscilloscope

FIGURE  3

35DB120A

SPECIAL TOOLS

TRACTION CONTROL SYSTEM (TCL)

13C-45

SPECIAL TOOLS

M1136000600024

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

For vehicles with CAN 
communication, use 
MUT-III main harness A 
to send simulated 
vehicle speed. If you 
connect MUT-III main 
harness B instead, the 
CAN communication 
does not function 
correctly.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

SPECIAL TOOLS

TRACTION CONTROL SYSTEM (TCL)

13C-46

MB991223

A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set

A: Inspection harness
B: LED harness
C: LED harness adapter
D: Probe

General service tools

Checking the continuity 
and measuring the 
voltage at the harness 
connector

TOOL

TOOL NUMBER AND NAME SUPERSESSION

APPLICATION

MB991223

A

D

C

B

AD

ON-VEHICLE SERVICE

TRACTION CONTROL SYSTEM (TCL)

13C-47

ON-VEHICLE SERVICE

TCL INDICATOR LIGHT CHECK

M1136000900058

1. Check that the "TCL OFF" indicator light and the TCL work 

indicator light illuminate for three seconds when the ignition 
switch is turned to the "ON" position.

2. Check that the "TCL OFF" indicator light illuminates and 

goes off in cycles each time the TCL switch is pushed after 
starting the engine.

3. Check that the "TCL OFF" indicator light and the TCL work 

indicator light do not illuminate, when driving at 30km/h 
(37.5 mph) for more than 2 seconds.

4. If defective, repair it. (Refer to 

P.13C-23

, TCL diagnosis 

− 

Symptom Procedures 

− Inspection Procedure 1, 2, 3 and 4).

TCL OPERATION CHECK

M1136001100055

Required Special Tools:

• MB991958: Diagnostic Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A