Mitsubishi Galant 9G. Manual — part 47
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-184
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. Use scan tool MB991958 to select "ECU COMM
Check" on the SWS monitor display.
Check the ETACS-ECU.
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
."
(2) Turn the ignition switch to the "ON" position.
(3) Operate the 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" menu for the "ETACS ECU" menu.
Q: Is "OK" displayed for the "ETACS ECU" menu?
YES : Go to Step 2.
NO : Refer to Inspection Procedure A-3 "Communication
with the ETACS-ECU is not possible
."
AC305411AB
MB991910
DATA LINK
CONNECTOR
MB991827
MB991824
MB991806
MB991812
AC302210
COLUMN SWITCH
CONNECTOR
COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE
MB991812
AB
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-185
STEP 2. Check the input signal by using "DATA LIST"
menu of the SWS monitor.
Turn the ignition switch to the "ON" position before checking
input signals from the ignition switch (IG1).
(1) Operate scan tool MB991958 according to the procedure
below to display "ETACS ECU."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Data List."
f. Select "ETACS ECU."
(2) Check that normal conditions are displayed for the items
described in the table below.
Q: Does the scan tool MB991958 display the items "IG SW
(IG1)", "FRONT DOOR SW" as normal condition?
Normal condition displayed for all the items : Replace
the ETACS-ECU. Verify that the power window timer
works normally.
Normal condition is not displayed for "IG SW (IG1)" :
Refer to Inspection Procedure M-2 "ETACS-ECU
does not receive any signal from the ignition switch
(IG1)
Normal condition is not displayed for "FRONT DOOR
SW" : Refer to Inspection Procedure M-4 "ETACS-ECU
does not receive any signal from the front door
switches
."
ITEM NO.
ITEM NAME
NORMAL CONDITION
ITEM 30
IG SW (IG1)
OFF
ITEM 32
FRONT DOOR SW
AC305411AB
MB991910
DATA LINK
CONNECTOR
MB991827
MB991824
MB991806
MB991812
AC302210
COLUMN SWITCH
CONNECTOR
COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE
MB991812
AB
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-186
INSPECTION PROCEDURE D-3: Power Window: Only the front door window (LH) does not work by
operating power window main switch.
.
CIRCUIT OPERATION
The front power window regulator motor (LH) lower
or raises the door window (LH) when the power win-
dow main switch is moved to "UP" or "DOWN" posi-
tion.
.
TECHNICAL DESCRIPTION (COMMENT)
The power window main switch or the front power
window regulator motor (LH) may be defective.
.
TROUBLESHOOTING HINTS
• The power window main switch may be defective
• The front power window regulator motor (LH)
may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
.
POWER
WINDOW RELAY
POWER WINDOW
MAIN SWITCH
FRONT DOOR WINDOW
REGULATOR MOTOR
(LH)
Power Window (front: LH) Circuit
AC305262
CONNECTORS:E-12,E-13
E-12
E-13(GR)
AD
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-187
DIAGNOSIS
Required Special Tool:
• MB991223: Harness Set
STEP 1. Check power window main switch connector E-12
and front power window regulator motor (LH) connector
E-13 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are power window main switch connector E-12 and
front power window regulator motor (LH) connector
E-13 in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. When the power window main switch is
operated, the front power window (LH) should lower
or raise normally.
STEP 2. Check the power window main switch.
(1) Remove the power window main switch. Refer to GROUP
42, Door, Door Glass and Regulator
(2) Check continuity while power window main switch is moved
to "UP" and "DOWN" position.
Q: Is the power window main switch normal?
YES : Go to Step 3.
NO : Replace the power window main switch. When the
power window main switch is operated, the front
power window (LH) should lower or raise normally.
AC305331
AB
CONNECTORS:E-12,E-13
3
9
4
12
14
6
13
5
1110
8
2
7
1
HARNESS SIDE
E-12
E-13
E-12
E-13(GR)
HARNESS SIDE
FRONT (LH)
SWITCH
POSITION
TESTER
CONNECTION
SPECIFIED
CONDITION
UP
8
− 13, 9 − 12
Less than 2 ohms
OFF
8
− 9, 8 − 12, 9 − 12
DOWN
8
− 12, 9 − 13
AC210745
12
7
1
8
2
10
9
3
11
13
5
4
14
6
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