Mitsubishi Montero (2004+). Manual — part 828
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-569
STEP 18. Check the wiring harness between rear door
switch (LH) connector F-09 (terminal 2) and ETACS-ECU
connector D-222 (terminal 7).
NOTE: Also check intermediate connector D-125 and junction
block connector D-217 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If junction
block connector D-217 or intermediate connector D-125 is
damaged, Repair or replace the damaged component(s) as
described in GROUP 00E, Harness Connector Inspection
.
Q: Is the wiring harness between rear door switch (LH)
connector F-09 (terminal 2) and ETACS-ECU connector
D-222 (terminal 7) in good condition?
YES : Replace the ETACS-ECU. If the functions, which are
described in "CIRCUIT OPERATION", work normally,
the input signal from the rear door switch (LH) should
be normal.
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. If the
functions, which are described in "CIRCUIT
OPERATION", work normally, the input signal from
the rear door switch (LH) should be normal.
AC204174
CONNECTOR : D-222
AB
1
2
3
5
6
4
9 8
121110
13
15 14
16
17
7
19
20
18
JUNCTION BLOCK SIDE
D-222
AC204178
CONNECTOR : F-09
AC
HARNESS SIDE
1
2
3
F-09
AC204170
CONNECTOR : D-125
AO
9
8
6 7
5
3 4
20
32
21
33
43
17 18
30
41
16
29
28
39 40
13
25
12
24
35 36
14
26
37
15
27
38
19
31
42
1
10
22
2
11
23
34
AC204173
CONNECTOR : D-217
AG
HARNESS SIDE
8
1
11 10
3
4
12
9
2
13
14
6 5
15
7
D-217
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-570
INSPECTION PROCEDURE P-5: ETACS-ECU does not receive any signal from the driver's, front
passeger’s or back door lock key cylinder switch.
Door Lock Key Cylinder Switch Input Circuit
AC204171
CONNECTORS : D-15, D-111
AJ
D-111
D-15
AC204170
CONNECTOR : D-25
AZ
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-571
.
CIRCUIT OPERATION
The ETACS-ECU operates the central door locking
system according to signal from the driver's, front
passenger’s or back door lock key cylinder switch.
.
TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the systems, which are
described in "CIRCUIT OPERATION", do not work
normally.
.
TROUBLESHOOTING HINTS
• The driver’s, front passenger’s or back door lock
key cylinder switch 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
AC204174
CONNECTORS : D-223, D-224
D-224(B)
AI
D-223(B)
AC204179
CONNECTOR : G-11
AK
AC204180
CONNECTOR : H-03
H-03(B)
AF
AC204181
CONNECTOR : H-18
H-18(B)
AG
AC204182 AH
CONNECTOR : I-06
INPUT SIGNAL PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-572
STEP 1. Check which door lock key cylinder switch is
defective.
Q: Which door lock key cylinder switch does not send a
signal to the ECU?
Driver's door : Go to Step 2.
Front passenger's door : Go to Step 9.
Back door : Go to Step 15.
Driver's and front passenger's door : Go to Step 21.
Driver's and front passenger's door (Lock signal only) :
Go to Step 23.
STEP 2. Check driver's door lock key cylinder switch
connector H-03 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Is driver's door lock key cylinder switch connector H-03
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 systems, which are described in
"CIRCUIT OPERATION", work normally, the input
signal from the driver's door lock key cylinder switch
should be normal.
STEP 3. Check the driver's door lock key cylinder switch.
Disconnect driver's door lock key cylinder switch connector
H-03. Then check continuity between the switch terminals.
Q: Is the driver's door lock key cylinder switch in good
condition?
YES : Go to Step 4.
NO : Replace the driver's door lock key cylinder switch. If
the systems, which are described in "CIRCUIT
OPERATION", work normally, the input signal from
the driver's door lock key cylinder switch should be
normal.
AC204180
CONNECTOR : H-03
AB
HARNESS SIDE
<DRIVER'S SIDE>
H-03(B)
H-03(B)
1
2
3
SWITCH
POSITION
TESTER
CONNECTION
SPECIFIED
CONDITION
LOCK
2
− 3
Less than 2 ohms
Neutral (OFF)
1
− 2, 2 − 3
Open circuit
UNLOCK
1
− 2
Less than 2 ohms
ACX02410
1
2
3
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