Mitsubishi Montero (2004+). Manual — part 535
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-109
NOTE: Also check junction block connector D-217 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector D-217 is damaged,
repair or replace the connector as described in GROUP 00E,
Harness Connector Inspection
.
Q: Is the wiring harness between side step light-ECU
connector D-137 (terminal 3) and ETACS-ECU connector
D-222 (terminal 4) in good condition?
YES : Replace the side step light-ECU. Verify that the side
step light illuminate normally.
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 side step light illuminate normally.
STEP 5. Check side step light-ECU connector D-137 and
ETACS-ECU connector D-222 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is side step light-ECU connector D-137 and ETACS-ECU
connector D-222 in good condition?
YES : Go to Step 6.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the side step light illuminate
normally.
AC204173
CONNECTOR : D-217
AG
HARNESS SIDE
8
1
11 10
3
4
12
9
2
13
14
6 5
15
7
D-217
AC204170
CONNECTOR : D-137
HARNESS SIDE
D-137(GR)
D-137(GR)
AR
1
2
8 7
4
5
10
11
12
6
9
3
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
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-110
STEP 6. Check the wiring harness between side step
light-ECU connector D-137 (terminal 8) and ETACS-ECU
connector D-222 (terminal 19).
NOTE: Also check junction block connector D-217 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector D-217 is damaged,
repair or replace the connector as described in GROUP 00E,
Harness Connector Inspection
.
Q: Is the wiring harness between side step light-ECU
connector D-137 (terminal 8) and ETACS-ECU connector
D-222 (terminal 19) in good condition?
YES : Replace the side step light-ECU. Verify that the side
step light illuminate normally.
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 side step light illuminate normally.
AC204170
CONNECTOR : D-137
HARNESS SIDE
D-137(GR)
D-137(GR)
AR
1
2
8 7
4
5
10
11
12
6
9
3
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
AC204173
CONNECTOR : D-217
AG
HARNESS SIDE
8
1
11 10
3
4
12
9
2
13
14
6 5
15
7
D-217
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-111
INSPECTION PROCEDURE 4: The Side Step Light do not Illuminate Normally when Either Door is
Opened or Closed.
Side Step Light-ECU Circuit
AC204171
CONNECTOR : D-111
AG
AC204170
CONNECTOR : D-137
AX
D-137(GR)
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-112
.
TECHNICAL DESCRIPTION (COMMENT)
If side step light do not illuminate normally, the input
circuit from the door switch or the side step light-ECU
may be defective.
.
TROUBLESHOOTING HINTS
• The front, rear or back door switch may be defec-
tive
• The side step light-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 Tool:
• MB991223: Harness Set
STEP 1. Verify the door switch.
If the dome light switch are moved to the "door interlock posi-
tion", the dome light should illuminate when either door is
opened.
Q: Do the dome light illuminate normally?
YES : Go to Step 2.
NO : Refer to GROUP 54B, Inspection Procedure M-1 "The
dome light do not illuminate or go out normally
AC204173
CONNECTORS : D-209, 217
AK
D-209
D-217
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