Mitsubishi Galant. Manual — part 658

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-27

STEP 1. Check the ETACS-ECU connector C-82, column
switch connector C-60 and front-ECU connector A-09X for
damage.
Q: Are ETACS-ECU connector C-82, column switch

connector C-60 and front-ECU connector A-09X in good
condition?
YES : Go to Step 2.
NO : Repair or replace them. Refer to GROUP 00E,

Harness Connector Inspection

P.00E-2

. Confirm the

DTC 21 is not displayed.

ACX02500 AD

BATTERY

CONNECTOR: A-09X

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

AC003082AC

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-82

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-28

STEP 2. Check the harness wires from ETACS-ECU
connector C-82 to column switch connector C-60 and
front-ECU connector A-09X.
NOTE: After inspecting intermediate connectors C-66, check
the wires. If intermediate connectors C-66 is damaged, repair
or replace them. Refer to GROUP 00E, Harness Connector
Inspection

P.00E-2

.

Q: Are the harness wires from ETACS-ECU connector C-82

to column switch connector C-60 and front-ECU
connector A-09X in good condition?
YES : Go to Step 3.
NO : Replace them. Confirm the DTC 21 is not displayed.

ACX02500 AD

BATTERY

CONNECTOR: A-09X

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

AC003082AC

JUNCTION BLOCK
(FRONT VIEW)

CONNECTOR: C-82

AC003079 AB

CONNECTOR
BLOCK (LH)

CONNECTOR: C-66

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-29

STEP 3. Check the column switch.
Disconnect column switch connector C-60.

Q: Does DTC 21 set?

YES : Go to Step 4.
NO (DTC 12 sets) : Replace the column switch. Confirm the

DTCs 12 and 21 are not displayed.

STEP 4. Check the front-ECU.
Disconnect front-ECU connector A-09X.

Q: Does DTC 21 set?

YES : Replace the ETACS-ECU. Confirm the DTC 21 is not

displayed..

NO (DTC 13 sets) : Replace the front-ECU. Confirm the

DTCs 13 and 21 are not displayed.

AC003078 AB

CONNECTOR: C-60

COLUMN SWITCH

ACX02500 AD

BATTERY

CONNECTOR: A-09X

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-30

SYMPTOM PROCEDURES

Inspection Procedure A-1: Scan tool MB991502 communication is not possible.

AC004201

ETACS-ECU Power Supply and Scan Tool Communication Circuit