Mitsubishi Montero (2004+). Manual — part 536
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-113
STEP 2. Check side step light-ECU connector D-137 and
rear door switch (RH) connector F-05 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Is side step light-ECU connector D-137 and rear door
switch (RH) connector F-05 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the side step light illuminate
normally.
STEP 3. Check the wiring harness between side step
light-ECU connector D-137 (terminal 9) and rear door
switch (RH) connector F-05 (terminal 2).
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
AC204178
CONNECTOR : F-05
AB
HARNESS SIDE
1
2
3
F-05
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
AC204178
CONNECTOR : F-05
AB
HARNESS SIDE
1
2
3
F-05
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-114
NOTE: Also check intermediate connector D-111, junction
block connectors D-209 and D-217 for loose, corroded, or dam-
aged terminals, or terminals pushed back in the connector. If
intermediate connector D-111, junction block connector D-209
or 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 9) and rear door switch (RH)
connector F-05 (terminal 2) 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.
SIDE STEP LIGHT-ECU INSPECTION
M1542012400013
AC204171
CONNECTOR : D-111
AC
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
AC204191BD
CONNECTORS: D-209, D-217
D-209
HARNESS SIDE
HARNESS SIDE
D-217
D-209
D-217
1
2
6
7
9
3
4
11
12
10
5
13
8
8
1
11 10
3
4
12
9
2
13
14
6 5
15
7
AC203981
4
10
1
7 8 9
2 3
12
11
5 6
TERMINAL NO. SIGNAL
CHECKING REQUIREMENT
TERMINAL VOLTAGE
1
Battery power supply
Always
Battery positive voltage
2
Power supply to ignition
switch (IG1)
Ignition switch "LOCK" (OFF)
position
0 V
Ignition switch "ON" position
Battery positive voltage
3
Input of lock relay signal from
ETACS-ECU
When door lock actuator is
operating (doors locked)
0 V
4
Output to side step light (LH)
When side step light (LH) is on 2 V or less
5
Output to side step light (RH)
When side step light (RH) is on 2 V or less
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-115
SPECIAL TOOL
M1544000600287
ON-VEHICLE SERVICE
BULB REPLACEMENT
M1542001300410
<Side Step LIght Bulb>
1. Turn the bulb socket counterclockwise together with the
bulb, and remove the bulb.
CAUTION
Do not touch the surface of the bulb with hands or dirty
gloves as the bulb may pop after a short time. If the sur-
face does become dirty, clean it with alcohol or thinner,
and let it dry thoroughly before installing.
2. Install the bulb to the bulb socket, and turn the bulb socket
clockwise together with the bulb.
8
Input of unlock relay signal
from ETACS-ECU
When door lock actuator is
operating (doors unlocked)
Battery positive voltage
9
Output to all door switch
Ignition switch "LOCK"
0 V
12
Side step light-ECU ground
Always
0 V
TERMINAL NO. SIGNAL
CHECKING REQUIREMENT
TERMINAL VOLTAGE
TOOL
TOOL NUMBER
AND NAME
REPLACED BY MILLER
TOOL NUMBER
APPLICATION
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: Probe
General service tool
(jumper)
Making voltage and
resistance measurements
during troubleshooting
A: Connect pin contact
pressure inspection
B: Power circuit
inspection
C: Power circuit
inspection
D: Commercial tester
connection
MB991223
A
B
C
D
AC
AC204016
AB
SIDE STEP LIGHT
ASSEMBLY
(REAR VIEW)
SIDE STEP LIGHT
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CHASSIS ELECTRICAL
54A-116
SIDE STEP LIGHT
REMOVAL AND INSTALLATION
M1542012300016
AC203940AB
2
1
4
3
6
5
7
4.9 ± 0.9 N·m
43 ± 8 in-lb
4.9 ± 0.9 N·m
43 ± 8 in-lb
2
4
3
6
5
7
SIDE STEP LIGHT REMOVAL
STEPS
1.
SIDE STEP LIGHT HARNESS
CONNECTION
2.
SIDE STEP LIGHT BRACKET
3.
SIDE STEP LIGHT ASSEMBLY
4.
SIDE STEP LIGHT UNIT
5.
SIDE STEP LIGHT HARNESS
AND BULB ASSEMBLY
6.
SIDE STEP LIGHT BULB
7.
SIDE STEP LIGHT HARNESS
SIDE STEP LIGHT REMOVAL
STEPS (Continued)
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