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