Mitsubishi Montero (2002-2004). Manual — part 248
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-39
STEP 10. Replace the ECU.
(1) Replace the front-ECU.
(2) The system should communicate with the front-ECU
normally.
Q: Can the system communicate with the front-ECU?
YES : No action is necessary and testing is complete.
NO : Replace the ETACS-ECU. The system should
communicate with the front-ECU normally.
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-40
INSPECTION PROCEDURE A-5: Communication with the sunroof motor assembly (sunroof-ECU) is
not possible.
Sunroof Motor Assembly (Sunroof-ECU) and SWS Communication Circuit
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-41
.
CIRCUIT OPERATION
• Power to the sunroof motor assembly is supplied
through fusible links (1) and (4).
• When the ignition switch (IG2) signal is on, the
sunroof motor assembly is ready to operate.
.
TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit or the communication circuit
to the sunroof motor assembly or the sunroof motor
assembly may be defective.
.
TROUBLESHOOTING HINTS
• The sunroof motor assembly may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
ACX02274
FUSIBLE LINK (1), (4)
AE
BATTERY
FUSIBLE LINK (4)
FUSIBLE LINK (1)
AC204170
CONNECTORS : D-01, D-02, D-26, D-28
D-01
BF
D-28
D-02
D-26
AC204173
CONNECTORS : D-207, D-208, D-210, D-211
D-207
D-208
D-210
D-211(B)
AP
AC204174
CONNECTOR : D-224
D-224(B)
AG
AC204177
CONNECTORS : F-02, F-24
AJ
F-02
F-24
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-42
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
STEP 1. Check the fusible link (1) line of power supply
circuit to the sunroof motor assembly. Test at sunroof
motor assembly connector F-02.
(1) Disconnect sunroof motor assembly connector F-02 and
measure the voltage available at the wiring harness side of
the connector.
(2) Measure the voltage between terminal 3 and ground.
• The voltage should be approximately 12 volts (battery
positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 4.
NO : Go to Step 2.
STEP 2. Check sunroof motor assembly connector F-02 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is sunroof motor assembly connector F-02 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The system should communicate with the
sunroof motor assembly (sunroof-ECU) normally.
AC204177
CONNECTOR : F-02
AB
HARNESS SIDE
1
5
2
7
8
6
3
4
10 9
F-02
AC204458
5
1
7
8
6
2
9
10
4
3
AB
CONNECTOR: F-02
(HARNESS SIDE)
AC204177
CONNECTOR : F-02
AB
HARNESS SIDE
1
5
2
7
8
6
3
4
10 9
F-02
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