Mitsubishi Galant 9G. Manual — part 443

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

13D-40

DATA LIST REFERENCE TABLE

M1136003500071

The following items can be read by the scan tool
from the ABS/TCL-ECU input data. (Refer to

P.13D-3

).

NOTE: Since the TCL is controlled with the same ABS/TCL-ECU used to control the ABS, the stoplight switch
check item (No.6) used only for the ABS also appear.

ACTUATOR TEST REFERENCE TABLE

M1136003600067

The scan tool activates the following actuators for
testing. (Refer to

P.13D-3

).

NOTE: Since the TCL is controlled with the same ABS/TCL-ECU used to control the ABS, the FR, FL, RR or
RL Wheel ABS Drive testing items (No.01 to 04) used only for the ABS also appear.

MUT-III
SCAN TOOL
DISPLAY

ITEM
NO.

CHECK ITEM

CHECKING REQUIREMENTS NORMAL

VALUE

FR wheel
speed sensor

01

Front right wheel speed sensor Drive the vehicle

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

FL wheel
speed sensor

02

Front left wheel speed sensor

RR wheel
speed sensor

03

Rear right wheel speed sensor

RL wheel
speed sensor

04

Rear left wheel speed sensor

Battery
voltage

05

ABS/TCL-ECU power supply
voltage

Ignition switch power supply
voltage

Battery positive
voltage

Stoplight
switch*

06

Stoplight switch

Depress the brake pedal.

ON

Release the brake pedal.

OFF

TCL mode

35

TCL operation

When the TCL outputs the
operation permission signal
during driving

ON

When the TCL outputs the
operation inhibition signal
during driving

OFF

MUT-III SCAN TOOL
DISPLAY

ITEM NO.

CHECK ITEM

PARTS TO BE ACTIVATED

FR wheel ABS Drive* 01

Solenoid valve for front right wheel

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

FL wheel ABS Drive* 02

Solenoid valve for front left wheel

RR wheel ABS
Drive*

03

Solenoid valve for rear right wheel

RL wheel ABS Drive* 04

Solenoid valve for rear left wheel

Engine TCL Drive

09

TCL operation check

Outputs the engine torque
control signal (engine torque =
0) to PCM for three seconds.

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

13D-41

CHECK AT ABS/TCL-ECU TERMINAL VOLTAGE

M1136003800072

TERMINAL VOLTAGE CHECK CHART

.

Required Special Tools:
MB991970: ABS Check Harness
MB991223: Harness Set
1. Disconnect the ABS/TCL-ECU connector A-02 and connect

special tool MB991970 between the ABS/TCL-ECU and the
body-side harness connector. Then use special tool
MB991970 to measure the voltages between terminal 2 and
each 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 "ON." The
ABS/TCL-ECU performs the initial check during that period.

AC305209AB

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

COMPONENT SIDE

AC211156AC

ABS/TCL-ECU

A-02 HARNESS
CONNECTOR

MB991970

INSPECTION
HARNESS
CONNECTOR

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

13D-42

CONNECTOR
TERMINAL NO

SIGNAL

CHECKING REQUIREMENT

NORMAL
CONDITION

6

TCL switch

Ignition
switch: "ON"

When the TCL switch is not
pressed.

Battery positive
voltage

When the TCL switch is
pressed.

1 V or less

20

ABS/TCL-ECU power
supply

Ignition switch: "ON"

Battery positive
voltage

Ignition switch: "START"

1 V or less

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

13D-43

RESISTANCE AND CONTINUITY BETWEEN
HARNESS-SIDE CONNECTOR TERMINALS

.

Required Special Tools:
MB991970: ABS Check Harness
MB991223: Harness Set
1. Disconnect the ABS/TCL-ECU connector A-02 and connect

special tool MB991970 to the A-02 body-side harness
connector. Then turn the ignition switch to the "LOCK" (OFF)
position and checking resistance and continuity.

2. Check the resistance and continuity between the terminals

indicated in the table below.

3. The terminal layout is shown in the illustration.

AC305209AB

A-02 (GR)

CONNECTOR: A-02

A-02 HARNESS CONNECTOR:

COMPONENT SIDE

AC211160AD

ABS/TCL-ECU

A-02 HARNESS
CONNECTOR

MB991970

INSPECTION
HARNESS
CONNECTOR