Mitsubishi Montero (2004+). Manual — part 820
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-537
INSPECTION PROCEDURE O-9: Sunroof Switch: ETACS-ECU does not receive any signal from the
up, open or close/down switch.
Sunroof Switch Input Circuit
AC204170
CONNECTORS : D-02, D-26
BO
D-02
D-26
AC204174
CONNECTOR : D-224
D-224(B)
AG
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-538
.
CIRCUIT OPERATION
The ETACS-ECU receives a signal through the
sunroof motor assembly via the SWS communication
line from the sunroof switch, and sends a signal to
the data link connector.
.
TECHNICAL DESCRIPTION (COMMENT)
If the SWS communication line between the sunroof
motor assembly and the ETACS-ECU is defective,
the ETACS-ECU cannot identify the input signal from
the sunroof switch even if the sunroof is normal.
.
TROUBLESHOOTING HINTS
• The sunroof switch may be defective
• The sunroof motor assembly may be defective
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
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
• MB991911: MUT-III Main Harness B
STEP 1. Verify the sunroof operation.
Q: Does the sunroof work normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure F-1 "Sunroof does not
operate
AC204177
CONNECTORS : F-02, F-24
AJ
F-02
F-24
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-539
STEP 2. Check sunroof motor assembly connector F-02
and ETACS-ECU connector D-224 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are sunroof motor assembly connector F-02 and
ETACS-ECU connector D-224 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. If the sunroof operates normally, it indicates
that a correct signal is sent from the sunroof switch.
AC204174
CONNECTOR : D-224
AD
D-224(B)
D-224(B)
HARNESS SIDE
21
23
24
22
32
3433
31
26
27
28
3029
38
39
40
36
37
25
35
AC204177
CONNECTOR : F-02
AB
HARNESS SIDE
1
5
2
7
8
6
3
4
10 9
F-02
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-540
STEP 3. Check the wiring harness between sunroof motor
assembly connector F-02 (terminal 10) and ETACS-ECU
connector D-224 (terminal 21).
AC204174
CONNECTOR : D-224
AD
D-224(B)
D-224(B)
HARNESS SIDE
21
23
24
22
32
3433
31
26
27
28
3029
38
39
40
36
37
25
35
AC204195
CONNECTORS : F-02, F-24
F-02
AB
HARNESS SIDE
F-24
F-02
F-24
1
5
2
7
8
6
3
4
10 9
6
2
5
4
3
1
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