Mitsubishi Montero (2004+). Manual — part 600
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-43
STEP 6. Check the wiring harness between rear cooler
control unit connector E-09 (terminal 3, 4 and 8) and rear
cooler switch connector E-17 (terminal 5, 3 and 13).
NOTE: Also check intermediate connector D-112. If intermedi-
ate connector D-112 is damaged, repair or replace the connec-
tor as described in GROUP 00E, Harness Connector
Inspection
.
Q: Is the wiring harness between rear cooler control unit
connector E-09 (terminal 3, 4 and 8) and rear cooler
switch connector E-17 (terminal 5, 3 and 13) in good
condition?
YES : Go to Step 7.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
AC204176
CONNECTOR : E-09
AW
7
8
3
10 9
2
4
11
1312
5
14
6
1
HARNESS SIDE
AC204175
CONNECTOR : E-17
AE
HARNESS SIDE
FLOOR
COSOLE
1
7
2
8
10
11
5
13
6
14
12
4
9
3
AC204171 AL
CONNECTOR : D-112
2 3
27
32
28
33
16
15
4 5
19
18
29
17
34
7 8
35
22
21
9 10
30
36
31
37
25
24
23
6
20
1
14
26
11
13
12
38
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-44
STEP 7. Measure the voltage at rear cooler unit connector
G-13.
(1) Disconnect rear cooler unit connector G-13, and measure
the voltage at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 and ground.
• The measured value should be approximately 12 volts
(battery positive voltage).
Q: Does the measured voltage correspond with this range?
YES : Go to Step 10.
NO : Go to Step 8.
STEP 8. Check rear cooler unit connector G-13 for
damage.
Q: Is rear cooler unit connector G-13 in good condition?
YES : Go to Step 9.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the rear air conditioning works normally.
STEP 9. Check the wiring harness between rear cooler unit
connector G-13 (terminal 2) and the ignition switch (IG2).
AC204179
CONNECTOR : G-13
AO
HARNESS SIDE
1
2
3
4
AC204738
HARNESS SIDE : G-13
CO
1
2
3
4
AC204179
CONNECTOR : G-13
AO
HARNESS SIDE
1
2
3
4
AC204179
CONNECTOR : G-13
AO
HARNESS SIDE
1
2
3
4
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-45
NOTE: Also check intermediate connector D-112, joint connec-
tor (6) D-01, junction block connectors D-210 and D-208. If
intermediate connector D-112, joint connector (6) D-01, junc-
tion block connectors D-210 or D-208 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between rear cooler unit
connector G-13 (terminal 2) and the ignition switch (IG2)
in good condition?
YES : Check that the rear air conditioning works normally.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
AC204171 AL
CONNECTOR : D-112
2 3
27
32
28
33
16
15
4 5
19
18
29
17
34
7 8
35
22
21
9 10
30
36
31
37
25
24
23
6
20
1
14
26
11
13
12
38
AC204170
CONNECTOR: D-01
AB
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
AC204191
CONNECTORS: D-208, D-210
D-208
AC
HARNESS SIDE
HARNESS SIDE
D-210
D-208
D-210
1
2
3
5
6
4
1
2
7 6
3
9
4
11
12
10
13
5
8
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-46
STEP 10. Check the air thermo sensor.
When the resistance between the sensor terminals is mea-
sured at two or more temperature conditions, the resistance
should satisfy the value shown in the illustration.
NOTE: The temperature condition at the check shall be within
the range shown in the characteristic diagram.
Q: Does air thermo sensor work normally?
YES : Go to Step 11.
NO : Replace the air thermo sensor.
STEP 11. Check the expansion valve (magnet valve).
The valve is in normal condition if the actuation sound is heard
from the magnet valve when battery voltage is applied to mag-
net valve terminal 1 and terminal 2 is grounded.
Q: Does expansion valve work normally?
YES : Go to Step 12.
NO : Replace the expansion valve (magnet valve).
STEP 12. Check rear cooler unit connector G-13 and
magnetic valve connector G-13-2 for damage.
Q: Is rear cooler unit connector G-13 and magnetic valve
connector G-13-2 in good condition?
YES : Go to Step 13.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the rear air conditioning works normally.
AC001043
RESISTANCE k
Ω
8
6
4
2
0
-10
0
10
20
30
40
TEMPERATURE ˚C(˚F)
AB
(14)
(32)
(50)
(86)
(104)
(68)
1 2
AC102582
AC204179
CONNECTOR : G-13
AO
HARNESS SIDE
1
2
3
4
AC204698
CONNECTOR : G-13-2
AC
HARNESS SIDE
2 1
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