Mitsubishi 380. Manual — part 62

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-245

STEP 6. Check the wiring harness between windshield
wiper motor connector A-03 (terminal 2) and front-ECU
connector A-12X (terminal 29).
Q: Is the wiring harness between windshield wiper motor

connector A-03 (terminal 2) 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

16DB425A

A-03 (B)

CONNECTOR: A-03

AC305977

CONNCTOR: A-12X

AI

21

22

23

24

25

26

27

28

29

30

31

RELAY BOX SIDE

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-246

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 Diagnostic Tool MB991958 and SWS monitor
kit MB991813. For details on how to use the SWS
monitor, refer to "How to connect SWS monitor

P.54B-13

."

.

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

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• 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: Diagnostic 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: Test Probe Harness

ETACS-ECU

· VARIABLE INTERMITTENT WIPER

CONTROL SWITCH

INPUT SIGNAL

Variable Intermittent Wiper Control Switch Input Signal

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-247

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 Diagnostic Tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting Diagnostic Tool
MB991958. Connect special tool MB991910 before con-
necting 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 Diagnostic 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-426

."

ITEM NO.

ITEM NAME

NORMAL
CONDITION

ITEM 37

INT WIPER TIME

1.6

− 19.0 s

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

AC302210

COLUMN SWITCH
CONNECTOR

COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE

MB991812

AB

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-248

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

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

P.54B-13

."

.

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

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• 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: Diagnostic 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: Test Probe Harness

ETACS-ECU

· VARIABLE INTERMITTENT WIPER

CONTROL SWITCH

· VEHICLE SPEED SIGNAL

(COMBINATION METER)

INPUT SIGNAL

Variable Intermittent Wiper Control Switch Input Signal