Mitsubishi Montero (2004+). Manual — part 522
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-57
STEP 9. Check fuel level sensor connector G-03 and
combination meter connector D-03 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are fuel level sensor connector G-03 and combination
meter connector D-03 in good condition?
YES : Go to Step 10.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The fuel gauge should now operate
normally.
AC204170
CONNECTOR : D-03
AC
D-03(GR)
HARNESS
SIDE
51
52
61 60
53
54
56
57
55
63
66 65 64
59
62
58
67
D-03(GR)
AC204179
CONNECTOR : G-03
AU
G-03(B)
G-03(B)
HARNESS
SIDE
2
3
1
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-58
STEP 10. Check the wiring harness between fuel level
sensor connector G-03 (terminal 1) and combination meter
connector D-03 (terminal 63).
AC204188
CONNECTORS: D-03, D-29
BI
HARNESS SIDE
D-29
D-29
9 10
8
6 7
31 32
30
29
18 19 20 21
5
4
2
1
3
27
26
24
23
25
12 13 14 15 16 17
28
11
22
33
D-03(GR)
51
52
61 60
53
54
56
57
55
63
66 65 64
59
62
58
67
D-03(GR)
AC204179
CONNECTOR : G-03
AU
G-03(B)
G-03(B)
HARNESS
SIDE
2
3
1
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-59
NOTE: Also check intermediate connectors F-07, D-111 and
joint connector (5) D-29. If intermediate connector F-07, D-111
or joint connector (5) D-29 is damaged, repair or replace the
connector as described in GROUP 00E, Harness Connector
Inspection
.
Q: Is the wiring harness between fuel level sensor
connector G-03 (terminal 1) and combination meter
connector D-03 (terminal 63) in good condition?
YES : Repair or replace the combination meter. The fuel
gauge should now operate normally.
NO : Repair the wiring harness. The fuel gauge should now
operate normally.
INSPECTION PROCEDURE 4: Engine Coolant Temperature Gauge does not Work.
AC204171
CONNECTOR : D-111
AQ
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
AC204178
CONNECTOR : F-07
AN
F-07(B)
F-07(B)
7
6
5
1 2 3 4
8
ENGINE
COOLANT
TEMPERATURE
GAUGE UNIT
COMBINATION
METER
CPU
TEMP
GAUGE
Engine Coolant Temperature Gauge Circuit
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-60
.
CIRCUIT OPERATION
• The ignition switch (IG1) circuit is the power sup-
ply for the engine coolant temperature gauge.
• Resistance value, which the engine coolant tem-
perature gauge unit sends to the combination
meter, is dependent on temperature of the engine
coolant. This change in resistance causes the cir-
cuit current to fluctuate, thus moving the needle
on the gauge.
.
TECHNICAL DESCRIPTION (COMMENT)
If there is an open in the ignition switch (IG1) circuit,
the gauge needle will not move at all. If there is an
open in the ground circuit, the gauge needle will
move down to the extreme cold position.
.
TROUBLESHOOTING HINTS
• Malfunction of the engine coolant temperature
gauge unit
• Malfunction of the combination meter (printed-cir-
cuit board or engine coolant temperature gauge
assembly)
• 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. Check the engine coolant temperature gauge by
observing the other meters.
Check to see that the speedometer, tachometer and fuel gauge
operate normally.
Q: Do all other meters operate?
YES < other meters all operate > : Go to Step 2.
NO < one of the meters do not operate > : Refer to
INSPECTION PROCEDURE 5
.
AC204168
CONNECTOR : B-38
AE
B-38(B)
AC204170
CONNECTORS : D-03, D-32
DF
D-03(GR)
D-32(GR)
AC204176
CONNECTOR: E-111
AK
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