Mitsubishi Galant. Manual - part 538

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-33

DATA LIST REFERENCE TABLE

M1354003000021

The following items can be read by the scan tool 
from the ABS-ECU input data.

ACTUATOR TEST REFERENCE TABLE

M1354003100028

The scan tool activates the following actuators for 
testing.

NOTE: If the ABS-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 
actuator testing exceeds 10 km/h (6 mph), forced 
actuation will be canceled.

ACTUATOR TEST SPECIFICATIONS

MUT-II SCAN 
TOOL DISPLAY

ITEM NO.

CHECK ITEM

CHECKING
REQUIREMENTS

NORMAL VALUE

ECU VOLTAGE

16

ABS-ECU power 
supply voltage

Ignition switch power 
supply voltage and valve 
monitor voltage

9 

−

 16 V

FR SNSR

11

Front-right wheel 
speed sensor

Drive the vehicle

Vehicle speeds displayed 
on the speedometer and 
scan tool are identical.

FL SNSR

12

Front-left wheel 
speed sensor

RR SNSR

13

Rear-right wheel 
speed sensor

RL SNSR

14

Rear-left wheel 
speed sensor

NO.

ITEM

PARTS TO BE
ACTIVATED

01

ABS solenoid valve for 
front-left wheel

Solenoid valves and 
pump motor in the
hydraulic unit (simple 
inspection mode)

02

ABS solenoid valve for 
front-right wheel

03

ABS solenoid valve for 
rear-left wheel

04

ABS solenoid valve for 
rear-right wheel

06

TCL solenoid valve for 
front-right wheel

TCL valves and pump 
motor in the hydraulic 
unit
(simple inspection 
mode)

07

TCL solenoid valve for 
front-left wheel

12

Pump motor

Activate the pump mo-
tor for two seconds.

AC000971AB

ACTIVATION PATTERN (NO.06,07)

A

B

C

TCL
SOLENOID
VALVE

END OF
FORCED
ACTION

START OF
FORCED
ACTION

1 s

2 s

PUMP
MOTOR

ON

OFF

NOTE
A:
B:
C:

HYDRAULIC PRESSURE DECREASES
HYDRAULIC PRESSURE HOLDS
HYDRAULIC PRESSURE INCREASES

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-34

CHECK AT ABS-ECU

M1354003200025

TERMINAL VOLTAGE CHECK CHART
1. Measure the voltages between terminals (8) and 

(24) (ground terminals) and each respective 
terminal.

2. The terminal layouts are shown in the illustrations 

below.

NOTE: Do not measure terminal voltage for 
approximately three seconds after the ignition 
switch is turned to "ON." The ABS-ECU performs 
the initial check during that period.

RESISTANCE AND CONTINUITY BETWEEN 
HARNESS-SIDE CONNECTOR TERMINALS
1. Turn the ignition switch to the "LOCK" (OFF) 

position and disconnect the ABS-ECU connectors 
before checking resistance and continuity.

2. Check between the terminals indicated in the 

table below.

3. The terminal layouts are shown in the illustration 

below.

AC003648

CONNECTOR
TERMINAL 
NO.

SIGNAL

CHECKING REQUIREMENT

NORMAL 
CONDITION

4

ABS-ECU 
power supply

Ignition switch: "ON"

Battery position 
voltage

Ignition switch: "OFF"

Approximately 0 V

7

Scan tool

Connect the scan tool

Serial communication 
with scan tool

Do not connect the scan tool

Approximately 0 V

9

Solenoid valve 
power supply

Always

Battery position 
voltage

14

Input from di-
agnostic indi-
cation 
selection

Connect the scan tool

Approximately 0 V

Do not connect the scan tool

Battery position 
voltage

16

Output to ABS 
warning light 
relay control

Ignition switch:"ON"

The light is switch off.

2V or less

The light is illuminated.

Battery position 
voltage

18

Input from 
stoplight switch

Ignition switch:"ON"

Stoplight switch:"ON" 

Battery position 
voltage

Stoplight switch:"OFF" 

Approximately 0 V

25

Motor power 
supply

Always

Battery position 
voltage

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-35

AC003647

CONNECTOR TERMINAL NO.

SIGNAL

NORMAL CONDITION

1 

−

 2

Front-left wheel speed sensor

1.28 

−

 1.92 k

Ω

22 

−

 23

Rear-right wheel speed sensor

1.28 

−

 1.92 k

Ω

19 

−

 20

Front-right wheel speed sensor

1.28 

−

 1.92 k

Ω

5 

−

 6

Rear-left wheel speed sensor

1.28 

−

 1.92 k

Ω

8 

−

 body ground

Solenoid valve ground

Less than 2 ohms

24 

−

 body ground

Motor ground

Less than 2 ohms

SPECIAL TOOLS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-36

SPECIA L TO O LS

M1354000200026

O N -VEH IC LE SERVIC E

BLEEDING

M1354003600023

CAUTION

Use the specified brake fluid. Don't use a mixture of the 
specified brake fluid and another non-specified fluid.

Specified brake fluid: Conforming to DOT 3 or DOT 4

BLEEDING THE MASTER CYLINDER

Refer to GROUP 35A, On-vehicle Service 

−

 Bleeding 

P.35A-

21

.

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB991502
Scan tool (MUT-II)

MB991496-OD

For checking of TCL
[Diagnostic trouble code 
display when using the 
scan tool (MUT-II)]

MB991529
Diagnostic trouble code 
check harness

Tool not necessary if scan 
tool (MUT-II) is available.

For checking of TCL
(Diagnostic trouble code 
display when using the 
TCL warning light)

MB991223
Harness set
MB991219
A:Connector pin contact 
pressure inspection

MB991223
MB991709-01

Wheel speed sensor out-
put voltage measurement

B991502

MB991529

MB991223

A

AH