Mitsubishi Galant (2004+). Manual - part 274

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-287

STEP 6. Check the wiring harness between windshield
wiper motor connector A-03 (terminal 4) and front-ECU
connector A-12X (terminal 29).

Q: Is the wiring harness between windshield wiper motor

connector A-03 (terminal 4) and front-ECU connector
A-12X (terminal 29) in good condition?
YES : Replace the front-ECU. The windshield wiper should

stop at the predetermined park position.

NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the windshield wiper works normally

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AC305977

CONNCTOR: A-12X

RELAY BOX SIDE

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-288

INSPECTION PROCEDURE G-5: Windshield Wiper and Washer: The windshield intermittent wiper
interval cannot be adjusted by using the variable intermittent wiper control 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

TECHNICAL DESCRIPTION (COMMENT)
If the windshield intermittent wiper interval is not
changed by operating the windshield intermittent
wiper interval adjusting knob or according to the
vehicle speed, the column switch, the ETACS-ECU
or the front-ECU may be defective.

TROUBLESHOOTING HINTS

• Trouble in input signal system

• The wiring harness or connectors may have

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

• The ETACS-ECU may be defective

• The front-ECU may be defective

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

ETACS-ECU

· VARIABLE INTERMITTENT WIPER
CONTROL SWITCH

INPUT SIGNAL

Variable Intermittent Wiper Control Switch Input Signal

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-289

Check the input signal by using "DATA LIST" menu of the
SWS monitor.

Set each switch to the following condition to check input signals
from the variable intermittent wiper control switch:

• Ignition switch: ACC

• Windshield wiper switch: INT

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. 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 special tool. Refer to "How to connect SWS

monitor

P.54B-13

(2) Operate scan tool MB991958 according to the procedure

below to display "F.WIPER INT."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Function Diag."
f. Select "WIPER."
g. Select "F.WIPER INT."

(3) Check that normal conditions are displayed for the items

described in the table below.
NOTE: Also check that the windshield wiper interval
changes smoothly when the variable intermittent wiper con-
trol switch is rotated from "SLOW" to "FAST" position.

Q: Does the value change within the normal range when

the windshield intermittent wiper interval adjusting
knob is rotated?
YES : Replace the front-ECU. Check that the windshield

intermittent wiper interval changes according to the
vehicle speed or while the windshield intermittent
wiper interval adjusting knob is rotated.

NO : Refer to Inspection Procedure M-7 "ETACS-ECU

does not receive any signal from the variable
intermittent wiper control switch

P.54B-512

ITEM NO.

ITEM NAME

NORMAL
CONDITION

ITEM 37

INT WIPER TIME

1.6

− 19.0 s

AC305411AB

MB991910

DATA LINK

CONNECTOR

MB991827

MB991824

MB991806

MB991812

AC302210

COLUMN SWITCH
CONNECTOR

COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE

MB991812

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-290

INSPECTION PROCEDURE G-6: Windshield Wiper and Washer: The windshield intermittent wiper
interval does not changed according to the vehicle speed.

NOTE: This troubleshooting procedure requires 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

TECHNICAL DESCRIPTION (COMMENT)
If the windshield intermittent wiper interval does not
change according to the vehicle speed, the
ETACS-ECU or the front-ECU may be defective.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have

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

• The combination meter may be defective

• The ETACS-ECU may be defective

• The front-ECU may be defective

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

ETACS-ECU

· VARIABLE INTERMITTENT WIPER
CONTROL SWITCH
· VEHICLE SPEED SIGNAL
(COMBINATION METER)

INPUT SIGNAL

Variable Intermittent Wiper Control Switch Input Signal

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