Mitsubishi Montero (2004+). Manual — part 616
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-107
NOTE: Also check intermediate connector D-112, joint connec-
tor (6) D-01, junction block connector C-210 and D-208. If inter-
mediate connector D-112, joint connector (6) D-01, junction
block connector D-210 and D-208 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between rear A/C unit connector
G-22 (terminal 4) 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.
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
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
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-108
STEP 8. Check rear A/C unit connector G-22 and mode
selection damper control motor connector G-22-3 for
damage.
Q: Is rear A/C unit connector G-22 and mode selection
damper control motor connector G-22-3 for damage 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 A/C unit
connector G-22 (terminal 3 and 4) and mode selection
damper control motor connector G-22-3 (terminal 1 and 2).
Q: Is the wiring harness between rear A/C unit connector
G-22 (terminal 3 and 4) and mode selection damper
control motor connector G-22-3 (terminal 1 and 2) in
good condition?
YES : Go to Step 10.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
AC204179
CONNECTOR : G-22
AP
HARNESS SIDE
1
5
7
8
2
6
10
4
9
3
AC204698
CONNECTOR : G-22-3
AG
HARNESS SIDE
7 6 5 4 3 2 1
AC204179
CONNECTOR : G-22
AP
HARNESS SIDE
1
5
7
8
2
6
10
4
9
3
AC204698
CONNECTOR : G-22-3
AG
HARNESS SIDE
7 6 5 4 3 2 1
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-109
STEP 10. Check rear A/C control unit connector E-20 and
mode selection damper control motor connector G-22-3
for damage.
Q: Is rear A/C control unit connector E-20 and mode
selection damper control motor connector G-22-3 for
damage in good condition?
YES : Go to Step 11.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the rear air conditioning works normally.
STEP 11. Check the wiring harness between rear A/C
control unit connector E-20 (terminal 9, 10 and 11) and
mode selection damper control motor connector G-22-3
(terminal 6, 4 and 3).
AC204176
CONNECTOR : E-20
AY
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
AC204698
CONNECTOR : G-22-3
AG
HARNESS SIDE
7 6 5 4 3 2 1
AC204176
CONNECTOR : E-20
AY
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
AC204698
CONNECTOR : G-22-3
AG
HARNESS SIDE
7 6 5 4 3 2 1
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-110
NOTE: Also check intermediate connector D-112 and rear A/C
unit connector G-22. If intermediate connector D-112 and rear
A/C unit connector G-22 is damaged, repair or replace the con-
nector as described in GROUP 00E, Harness Connector
Inspection
.
Q: Is the wiring harness between rear A/C control unit
connector E-20 (terminal 9, 10 and 11) and mode
selection damper control motor connector G-22-3
(terminal 6, 4 and 3) in good condition?
YES : Go to Step 12.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
STEP 12. Replace the mode selection damper control
motor connector.
Q: Do the air conditioning work normally?
YES : No action is necessary and testing is complete.
NO : Replace the rear A/C control unit. Check that the air
conditioning works normally.
CHECK AT ECU TERMINAL
M1554005400160
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
AC204179
CONNECTOR : G-22
AP
HARNESS SIDE
1
5
7
8
2
6
10
4
9
3
ACX00820
TERMINAL
NO.
INSPECTION ITEM
INSPECTION CONDITION
NORMAL
CONDITION
1
Magnetic valve
Magnetic valve: OFF
Battery positive
voltage
Magnetic valve: ON
0.5 V
2
Ground
At all times
0 V
3
Input from temperature adjusting
switch
Temperature switch: MAX HOT
1 V
Temperature switch: MAX COOL
4 V
4
Air mixing damper control motor
potentiometer power supply
At all times
5 V
5
Power supply (IG2)
Ignition switch: ON
Battery positive
voltage
Ignition switch: OFF
0 V
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