Mitsubishi Montero (2002-2004). Manual — part 982
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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STEP 6. Check harness for short circuit to ground between
dual pressure switch connector A-22 terminal 2 and A/C-
ECU connector D-23 terminal 5 <Vehicles with full
automatic A/C> or dual pressure switch connector A-22
terminal 2 and automatic compressor controller connector
D-119 terminal 4 <Vehicles with manual A/C>.
Q: Is the harness wire in good condition?
YES : Go to Step 7.
NO : Repair or replace the harness wire.
AC204167
CONNECTOR : A-22
AV
A-22 (BR)
A-22
1 2
AC204188
CONNECTORS : D-23, D-119
D-23 (B)
D-23, D-119
D-119 (B)
BD
20
10
19
9
17
7
16
6
14
4
3
13
5
15
11
1 2
12
8
18
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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STEP 7. Using scan tool MB991502, check data list item 65:
Dual Pressure Switch.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991502 to data reading mode for item65,
Dual Pressure Switch.
• When the A/C is in operation, scan tool MB991502 dis-
play should be "ON."
• When the A/C is not in operation, scan tool MB991502
display should be "OFF."
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points
− How to Cope with
Intermittent Malfunction
NO : Check the air conditioning system. Refer to GROUP
STEP 8. Check intermediate connector D-28, A/C-ECU
connector D-23 <Vehicles with full automatic A/C> and
automatic compressor controller connector D-119
<Vehicles with manual A/C> for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
ACX01539AD
MB991502
16-PIN
AC204188
CONNECTORS : D-23, D-28, D-119
D-23 (B)
D-23, D-119
D-119 (B)
BE
D-28
D-28
20
10
19
9
17
7
16
6
14
4
3
13
5
15
11
1 2
12
8
18
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
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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STEP 9. Check the harness for open circuit between dual
pressure switch connector A-22 terminal 2 and A/C-ECU
connector D-23 terminal 5 <Vehicles with full automatic A/
C> or dual pressure switch connector A-22 terminal 2 and
automatic compressor controller connector D-119 terminal
4 <Vehicles with manual A/C>.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair or replace the harness wire.
AC204167
CONNECTOR : A-22
AV
A-22 (BR)
A-22
1 2
AC204188
CONNECTORS : D-23, D-119
D-23 (B)
D-23, D-119
D-119 (B)
BD
20
10
19
9
17
7
16
6
14
4
3
13
5
15
11
1 2
12
8
18
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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STEP 10. Measure the switch output voltage at PCM
connector D-134 by backprobing.
(1) Do not disconnect connector D-134.
(2) Start the engine and run at idle.
(3) Operate the A/C.
(4) Measure the voltage between terminal 69 and ground by
backprobing.
• When the A/C is in operation, the voltage should mea-
sure battery positive voltage.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES : Go to Step 15.
NO : Go to Step 11.
AC204681AC
CONNECTOR: D-134
D-134 (GR)
61 62
63 64
65 66 67 68 69 70 71 72 73
82
89
81
88
80
79
78
77
87
86
85
76
75
74
84
83
AC204918 BI
D-134 HARNESS CONNECTOR :
HARNESS SIDE
76
85
65
72
71
73
82
75
81
74
63 64
66
70
69
68
67
78
87
79
88 89
80
77
86
62
61
83 84
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