Mitsubishi Galant. Manual — part 536

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

TSB Revision

TRACTION CONTROL SYSTEM (TCL)

35C-25

STEP 6. Check the continuity between the combination
meter and the ABS-ECU.
Check the continuity between combination meter connector C-
29 and ABS-ECU connector A-03.

Q: Is there the continuity between combination meter

connector C-29 and ABS-ECU connector A-03?
YES : Go to Step 9.
NO : Repair the harness wire and then go to Step 9.

STEP 7. Check connectors C-29, C-73, and C-78.
Check connectors C-29, C-73, and C-78 (Refer to GROUP
00E, Harness Connector Inspection

P.00E-2

.).

Q: Are any of the connectors damaged?

YES : Repair it and then go to Step 9.
NO : Go to Step 8.

AC003695 AB

CONNECTOR: A-03

AC005076AB

CONNECTOR: C-29

AC005076AB

CONNECTOR: C-29

AC003082 AM

CONNECTORS: C-73, C-78

C-73

C-78

JUNCTION BLOCK
(FRONT VIEW)

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

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TRACTION CONTROL SYSTEM (TCL)

35C-26

STEP 8. Check the continuity between the ignition switch
(IG1) and the combination meter.
Q: Is there any continuity (less than 2 ohm) between the

ignition switch (IG1) and combination meter connector
C-29?
YES : Go to Step 9.
NO : Repair the harness wire and then go to Step 9.

STEP 9. Check symptoms

Q: Does the TCL warning light illuminate for 3 seconds

when the ignition switch is turned to the "ON" position
with engine stopped or upon startup?
YES : This diagnosis is complete.
NO : Return to Step 1.

INSPECTION PROCEDURE 4: The TCL indicator light remains illuminated after the engine is started

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.

AC005076AB

CONNECTOR: C-29

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

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TRACTION CONTROL SYSTEM (TCL)

35C-27

AC003725

TCL Indicator Light Circuit

AB

TRACTION CONTROL SYSTEM (TCL) DIAGNOSIS

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TRACTION CONTROL SYSTEM (TCL)

35C-28

CIRCUIT OPERATION

•

The ABS-ECU controls the illumination of the
TCL indicator light by turning it "ON" and "OFF."

•

The ABS-ECU illuminates the TCL indicator light
on startup. If turns off the light after 3 seconds
when the ABS-ECU completes the self-check.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably the hydraulic unit (integrated
with ABS-ECU) malfunction.

TROUBLESHOOTING HINTS

•

Damaged wiring harness

•

Malfunction of the hydraulic unit (integrated with
ABS-ECU)

DIAGNOSIS

Required Special Tool:

•

MB991223: Harness Set

STEP 1. Check the power supply circuit at the ABS-ECU
connector A-03.
(1) Disconnect ABS-ECU connector A-03.
(2) Turn the ignition switch to the "ON" position.

Q: Is the TCL indicator light illuminate?

YES : Go to Step 2.
NO : Replace the Hydraulic unit (integrated with ABS-ECU)

and then go to Step 3.

AC003695 AB

CONNECTOR: A-03

AC003082AK

CONNECTORS: C-73, C-77

C-73

JUNCTION BLOCK
(FRONT VIEW)

C-77

AC005076AB

CONNECTOR: C-29

AC005077AB

CONNECTOR: C-12

AC003695 AB

CONNECTOR: A-03