Mitsubishi Galant. Manual — part 533

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-13

STEP: 3. Check the harness wires between ABS-ECU
connector A-03 and data link connector C-23.

NOTE: After inspecting intermediate connector C-12, C-57
inspect the wire. If intermediate connector C-12, C-57 is
damaged, repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection

P.00E-2

. If the connector has been

repaired, go to Step 5.

Q: Are any harness wires between ABS-ECU connector A-

03 and data link connector C-23 damaged?
YES : Repair them and then go to Step 5.
NO : Go to Step 4.

AC005077AB

CONNECTOR: C-12

AC005076AD

CONNECTOR: C-57

AC003695 AB

CONNECTOR: A-03

AC005076AC

CONNECTOR: C-23

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

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TRACTION CONTROL SYSTEM (TCL)

35C-14

STEP: 4.Check the harness wires between ABS-ECU
connector A-03 and ground.
Q: Are any harness wires between ABS-ECU connector A-

03 and ground damaged?
YES : Repair them and then go to Step 5.
NO : Replace the ABS-ECU and then go to Step 5.

STEP: 5. Check symptoms.

Q: Does the scan tool will now communicate with the TCL

system?
YES : This diagnosis is complete.
NO : Return to Step 1.

INSPECTION PROCEDURE ２

２

２

２ : When the ignition switch is turned "ON" (engine stopped or after

startup), the TCL indicator light does not illuminate.

NOTE: This diagnosis procedure is limited to cases where communication with the scan tool is possible
(ABS-ECU power supply is normal) and no diagnostic trouble code outputs.

AC003695 AB

CONNECTOR: A-03

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-15

AC003725

TCL Indicator Light Circuit

AB

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-16

CIRCUIT OPERATION

•

Power to the TCL indicator light is supplied from
the ignition switch. The ABS-ECU grounds the
circuit to turn the light ON.

•

The ABS-ECU illuminates the TCL indicator light
for 3 seconds while running self-check. This light
can be illuminated for 3 seconds upon startup or
key ON, engine stopped.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be: an open circuit in the TCL
indicator light power supply circuit, a blown TCL
indicator light bulb or ABS-ECU.

TROUBLESHOOTING HINTS

•

Blown fuse

•

Damaged wiring harness or connector

•

Burnt out TCL indicator light bulb

•

Malfunction of the ABS-ECU

DIAGNOSIS

Required Special Tool:

•

MB991223: Harness Set

STEP 1. Check the power supply circuit at ABS-ECU
connector A-03.
(1) Disconnect connector A-03 and measure at the harness

side.

(2) Turn the ignition switch to "ON" position.
(3) The TCL indicator light should illuminate if terminal 13 is

grounded.

Q: Does the TCL indicator light illuminate?

YES : Replace the hydraulic unit (integrated with ABS-ECU)

and then go to Step 9.

NO : Go to Step 2.

AC003695 AB

CONNECTOR: A-03

AC005076AB

CONNECTOR: C-29

AC005077AB

CONNECTOR: C-12

AC003082AK

CONNECTORS: C-73, C-77

C-73

JUNCTION BLOCK
(FRONT VIEW)

C-77

AC003701AB

A-03 (HARNESS SIDE)