Mitsubishi Galant 9G. Manual — part 70

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-276

STEP 3. Check the ignition switch (ACC) circuit to the
windshield wiper motor. Measure the voltage at windshield
wiper motor connector A-03.
(1) Disconnect windshield wiper motor connector A-03 and

measure the voltage available at the wiring harness side of
the connector.

(2) Turn the ignition switch to the "ACC" position.

(3) Measure the voltage between terminal 3 and ground.

• The voltage should measure approximately 12 volts

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 5.
NO : Go to Step 4.

STEP 4. Check the wiring harness between windshield
wiper motor connector A-03 (terminal 3) and the ignition
switch (ACC).

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

AC209365

4

5

2

3

1

AC209365

AC209365

AC209365CM

CONNECTOR A-03
(HARNESS SIDE)

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-277

NOTE: Also check intermediate connector C-29 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-29 is damaged, repair or
replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between windshield wiper motor

connector A-03 (terminal 3) and the ignition switch
(ACC) in good condition?
YES : No action is necessary and testing is complete.
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.

STEP 5. Check front-ECU connector A-12X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is front-ECU connector A-12X in good condition?

YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The windshield wiper should stop at the

predetermined park position.

AC305231AI

CONNECTOR: C-29

AC305977

CONNCTOR: A-12X

AI

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29

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SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-278

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

AH

AC305977

CONNCTOR: A-12X

AI

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22

23

24

25

26

27

28

29

30

31

RELAY BOX SIDE

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-279

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