Mitsubishi Galant (2004+). Manual - part 210

 

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Mitsubishi Galant (2004+). Manual - part 210

 

 

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-31

DTC 002: Trouble in Column Switch

NOTE: This troubleshooting procedure requires the 
use of scan tool MB991958 and SWS monitor kit 
MB991813. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor 

P.54B-15

."

CAUTION

If DTC 002 is set in the ETACS-ECU, always diag-
nose the CAN main bus line.

.

TROUBLE JUDGMENT
The ETACS-ECU communicates with the column 
switch through the SWS communication line. If there 
is any trouble in that communication, DTC 002 will be 
set.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

• The column switch, the ETACS-ECU, connec-

tor(s), or wiring harness between the two may be 
defective.

Past trouble

• If DTC 002 is set as past trouble, carry out diag-

nosis with particular emphasis on wiring and con-
nector(s) between the column switch and the 
ETACS-ECU or power supply to the column 
switch. For diagnosis procedures, refer to "How 
to cope with past trouble" (Refer to GROUP 00, 
How to Use Troubleshooting/Inspection Service 
Points 

P.00-6

).

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-32

STEP 1. Using scan tool MB991958, diagnose the CAN bus 
line.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect 

SWS monitor 

P.54B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO :  Repair the CAN bus line (Refer to GROUP 54C, 

Diagnosis 

P.54C-14

.)

STEP 2. Recheck for diagnostic trouble code.

Check again if the DTC is set.
(1) Erase the DTC.
(2) Turn the ignition switch to the "ON" position.

(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Go to Step 3.
NO :  There is an intermittent malfunction such as poor 

engaged connector(s) or open circuit (Refer to 
GROUP 00, How to Cope with Intermittent 
Malfunction 

P.00-6

).

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-33

STEP 3. Use scan tool MB991958 to select "ECU COMM 
Check" on the SWS monitor display.

Check the following ECUs:

• Column-ECU

• ETACS-ECU

CAUTION

Connect special tool MB991910 before connecting special 
tool MB991812. Be sure to connect special tool MB991806 
after turning on special tool MB991824.
(1) Connect the SWS monitor. Refer to "How to connect SWS 

monitor 

P.54B-13

."

(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Operate scan tool MB991958 according to the procedure 

below to display "ECU COMM Check."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "ECU COMM Check."

(4) Scan tool MB991958 should show "OK" on the "ECU 

COMM Check" menus for both the "COLUMN ECU" and 
the "ETACS ECU" menus.

Q: Is "OK" displayed for both the "COLUMN ECU" and 

"ETACS ECU" menus?
"OK" is displayed for all the items : 
It is determined that 

there is an intermittent malfunction such as poor 
engaged connector(s) or open circuit (Refer to 
GROUP 00, How to Cope with Intermittent 
Malfunction).

"NG" is displayed for the "COLUMN ECU" menu : Refer 

to Inspection Procedure A-2 "Communication with 
column switch (column-ECU) is not possible 

P.54B-72

."

"NG" is displayed for the "ETACS ECU" menu : Refer to 

Inspection Procedure A-3 "Communication with 
ETACS ECU is not possible 

P.54B-79

."

AC305411AB

MB991910

DATA LINK

CONNECTOR

MB991827

MB991824

MB991806

MB991812

AC302210

COLUMN SWITCH 
CONNECTOR

COLUMN SWITCH 
CONNECTOR AT 
HARNESS SIDE 

MB991812

AB

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-34

DTC 003: Trouble in Front-ECU

NOTE: This troubleshooting procedure requires the 
use of scan tool MB991958 and SWS monitor kit 
MB991813. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor 

P.54B-15

."

CAUTION

If DTC 003 is set in the ETACS-ECU, always diag-
nose the CAN main bus line.

.

TROUBLE JUDGMENT
The ETACS-ECU communicates with the front-ECU 
through the SWS communication line. If there is any 
trouble in that communication, DTC 003 will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

• The front-ECU, the ETACS-ECU, connector(s), or 

wiring harness between the two may be defec-
tive.

Past trouble

• If DTC 003 is set as past trouble, carry out diag-

nosis with particular emphasis on wiring and con-
nector(s) between the front-ECU and the 
ETACS-ECU or power supply to the front-ECU. 
For diagnosis procedures, refer to "How to cope 
with past trouble" (Refer to GROUP 00, How to 
Use Troubleshooting/Inspection Service Points 

P.00-6

).

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

 

 

 

 

 

 

 

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