Mitsubishi Galant (2004+). Manual - part 209

 

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Mitsubishi Galant (2004+). Manual - part 209

 

 

DIAGNOSTIC TROUBLE CODE CHART

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-27

DIAGNOSTIC TROUBLE CODE CHART

M1549000700290

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC 001: Trouble in SWS communication line or ETACS-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 001 is set in the ETACS-ECU, always diag-
nose the CAN main bus line.

.

TROUBLE JUDGMENT
The ETACS-ECU communicates with the column 
switch, the front-ECU and the sunroof-ECU through 
the SWS communication line. If there is any trouble 
in the SWS communication line and the 
ETACS-ECU, DTC 001 will be set.

.

TECHNICAL DESCRIPTION (COMMENT)

Current trouble

• The wiring harness wire or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector, or the 
ETACS-ECU may be defective.

Past trouble

• If DTC 001 is set as past trouble, carry out diag-

nosis with particular emphasis on wiring and con-
nector(s) in the SWS communication line. 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.

DIAGNOSTIC TROUBLE 
CODE NO.

DESCRIPTION

REFERENCE 
PAGE

001

Trouble in SWS communication line or ETACS-ECU

P.54B-27

002

Trouble in column switch

P.54B-31

003

Trouble in front-ECU

P.54B-34

004

Trouble in sunroof-ECU

P.54B-37

010

Bus Off

P.54B-40

011

Powertrain control module time-out (related to engine)

P.54B-42

012

Powertrain control module time-out (related to A/T)

013

A/C-ECU time-out

P.54B-45

014

Combination meter time-out

P.54B-49

015

Multi center display unit (middle grade type) time-out

P.54B-52

021

Failure information on combination meter

P.54B-56

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-28

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

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

).

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-29

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

DIAGNOSTIC TROUBLE CODE PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-30

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

Check the following ECUs:

• ETACS-ECU

• Column switch (column-ECU)

• Front-ECU

• Sunroof-ECU <Vehicles with sunroof only>

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 the "ETACS ECU", "COLUMN 
ECU", "FRONT ECU" and "SUNROOF ECU" menus.

Q: Is "OK" displayed for the "ETACS ECU," "COLUMN 

ECU," "FRONT ECU" and "SUNROOF 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 

P.00-6

).

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

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

P.54B-79

."

"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 "FRONT ECU" menu : Refer to 

Inspection Procedure A-4 "Communication with 
front-ECU is not possible 

P.54B-87

."

"NG" is displayed for the "SUNROOF ECU" menu : 

Refer to Inspection Procedure A-5 "Communication 
with sunroof-ECU is not possible 

P.54B-94

."

AC305411AB

MB991910

DATA LINK

CONNECTOR

MB991827

MB991824

MB991806

MB991812

AC302210

COLUMN SWITCH 
CONNECTOR

COLUMN SWITCH 
CONNECTOR AT 
HARNESS SIDE 

MB991812

AB

 

 

 

 

 

 

 

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