Mitsubishi Montero Sport (2004+). Manual — part 705
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-385
STEP 12. Check harness for open circuit or short circuit to
ground between dual pressure switch connector A-23
terminal 2 and PCM connector C-91 terminal 83.
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair or replace the harness wire.
STEP 13. Check the dual pressure switch.
Refer to GROUP 55A, Dual Pressure Switch Check
.
Q: Is the switch operating properly?
YES : Go to Step 14.
NO : Replace the dual pressure switch. Refer to GROUP
55A, Refrigerant Line
.
AC202889
1 2
AB
CONNECTOR: A-23
A-23 (BR)
AC202435
PCM
59
68
58
67
46 47
57
56
53
64
54
65
55
66
50
62
51
63
49
48
60 61
52
44
41 42 43
45
AC202435
PCM
CONNECTOR: C-91
AB
C-91 (GR)
71 72 73 74
75 76
77
78 79 80 81 82 83 84 85 86 87 88
90 91
92 93 94
95 96
97
98
89
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-386
STEP 14. Measure the A/C refrigerant temperature switch
terminal.
Check that there is continuity between the refrigerant tempera-
ture switch terminals.
Q: Is the resistance 2 ohms?
YES : Go to Step 15.
NO : Replace the compressor assembly.
STEP 15. Using scan tool MB991958, check data list item
65: Dual Pressure Switch.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to data reading mode.
• Item65: Dual Pressure Switch.
• When the A/C is in operation, the scan tool
MB991958 display should be "ON."
• When the A/C is not in operation, the scan tool
MB991958 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 : Replace the PCM.
AC004993AB
REFRIGERANT
TEMPERATURE
SWITCH TERMINALS
AK303629AB
MB991911
MB991827
MB991824
16-PIN
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-387
STEP 16. Check connector C-91 at PCM 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 15.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC202435
PCM
59
68
58
67
46 47
57
56
53
64
54
65
55
66
50
62
51
63
49
48
60 61
52
44
41 42 43
45
AC202435
PCM
CONNECTOR: C-91
AB
C-91 (GR)
71 72 73 74
75 76
77
78 79 80 81 82 83 84 85 86 87 88
90 91
92 93 94
95 96
97
98
89
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-388
INSPECTION PROCEDURE 16: Transmission won’t Downshift under Load with Auto-cruise Engaged.
AC004941 AB
Auto-cruise Signal Line System Circuit
AC004478
CONNECTOR: C-35
AC
15
14
5 6 7
12
11
4
2 3
13
9
1
10
16
8
C-35 (B)
AC202442
22
2021
10
9
8
1718
6 7
19
1415
4 5
1112
1 2 3
13
16
CONNECTOR: C-41
C-41
AB
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