Mitsubishi Montero (2004+). Manual — part 640
AUTO A/C DIAGNOSIS
TSB Revision
AUTOMATIC AIR CONDITIONING
55B-49
STEP 23. Check the wiring harness between dual pressure
switch connector A-22 (terminal 1) and powertrain control
module connector D-134 (terminal 69).
NOTE: Also check intermediate connectors A-03. If intermedi-
ate connectors A-03 are damaged, repair or replace the con-
nector as described in GROUP 00E, Harness Connector
Inspection
.
Q: Is the wiring harness between dual pressure switch
connector A-22 (terminal 1) and powertrain control
module connector D-134 (terminal 69) in good
condition?
YES : Go to Step 24.
NO : Repair the wiring harness. Check that the air
conditioning works normally.
AC204185
CONNECTORS : A-03, A-22
A-03(B)
A-22(BR)
A-03(B)
AN
A-22(BR)
2 1
6
12
5
3 4
2
1
9 10
8
7
11
HARNESS SIDE
AC204171
CONNECTOR: D-134
HARNESS SIDE
D-134(GR)
D-134(GR)
AE
80
87
73
66
67
65
74
81
75
82
6261
72
68
69
70
71
78
85
77
8483
76
79
86
63
64
8988
AUTO A/C DIAGNOSIS
TSB Revision
AUTOMATIC AIR CONDITIONING
55B-50
STEP 24. Check A/C-ECU connector D-23 and powertrain
control module connector D-134 for damage.
Q: Are A/C-ECU connector D-23 and powertrain control
module connector D-134 in good condition?
YES : Go to Step 25.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the air conditioning works normally.
STEP 25. Check the wiring harness between A/C-ECU
connector D-23 (terminal 7) and powertrain control module
connector D-134 (terminal 78).
AC204170
CONNECTOR : D-23
D-23(B)
D-23(B)
CP
HARNESS
SIDE
1
3
4
2
12
1413
11
6
7
8
10 9
18
19
20
16
17
5
15
AC204171
CONNECTOR: D-134
HARNESS SIDE
D-134(GR)
D-134(GR)
AE
80
87
73
66
67
65
74
81
75
82
6261
72
68
69
70
71
78
85
77
8483
76
79
86
63
64
8988
AC204170
CONNECTOR : D-23
D-23(B)
D-23(B)
CP
HARNESS
SIDE
1
3
4
2
12
1413
11
6
7
8
10 9
18
19
20
16
17
5
15
AC204171
CONNECTOR: D-134
HARNESS SIDE
D-134(GR)
D-134(GR)
AE
80
87
73
66
67
65
74
81
75
82
6261
72
68
69
70
71
78
85
77
8483
76
79
86
63
64
8988
AUTO A/C DIAGNOSIS
TSB Revision
AUTOMATIC AIR CONDITIONING
55B-51
NOTE: Also check intermediate connector E-111. If intermedi-
ate connector E-111 is damaged, repair or replace the connec-
tor as described in GROUP 00E, Harness Connector
Inspection
.
Q: Is the wiring harness between A/C-ECU connector D-23
(terminal 7) and powertrain control module connector
D-134 (terminal 78) in good condition?
YES : Go to Step 26.
NO : Repair the wiring harness. Check that the air
conditioning works normally.
STEP 26. Check A/C-ECU connector D-23 and heater
blower controller unit connector D-17 for damage.
Q: Are A/C-ECU connector D-23 and heater blower
controller unit connector D-17 in good condition?
YES : Go to Step 27.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the air conditioning works normally.
AC204176
CONNECTOR : E-111
BF
15
4
14
37
36
26 27
12
11
35
34
23 24
3
13
25
9
2
8
32
20 21
6
5
17
29
30
18
1
7
19
31
10
22
33
16
28
38
AC204171
CONNECTOR : D-17
AP
1
2
3
4
HARNESS
SIDE
AC204170
CONNECTOR : D-23
D-23(B)
D-23(B)
CP
HARNESS
SIDE
1
3
4
2
12
1413
11
6
7
8
10 9
18
19
20
16
17
5
15
AUTO A/C DIAGNOSIS
TSB Revision
AUTOMATIC AIR CONDITIONING
55B-52
STEP 27. Check the wiring harness between A/C-ECU
connector D-23 (terminal 10) and heater blower controller
unit connector D-17 (terminal 3).
Q: Is the wiring harness between A/C-ECU connector D-23
(terminal 10) and heater blower controller unit
connector D-17 (terminal 3) in good condition?
YES : Go to Step 28.
NO : Repair the wiring harness. Check that the air
conditioning works normally.
STEP 28. Check the flexible flat cable (FFC).
(1) The FCC is connected to the automatic air conditioning
control panel assembly. Check that the FCC connection is
contaminated with foreign material or loose (Refer to
(2) There should be continuity across the FFC terminals.
Q: Is the FFC normal?
YES : Go to Step 29.
NO : Repair the FFC (Refer to
). The
temperature control should work normally.
AC204171
CONNECTOR : D-17
AP
1
2
3
4
HARNESS
SIDE
AC204170
CONNECTOR : D-23
D-23(B)
D-23(B)
CP
HARNESS
SIDE
1
3
4
2
12
1413
11
6
7
8
10 9
18
19
20
16
17
5
15
AC205264AB
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