Mitsubishi Montero Sport (2004+). Manual — part 691
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-329
STEP 11. Check intermediate connector C-85 and PCM
connector C-90 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 12.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC202389
11
4
3
9
8
10
5 6
2
1
7
CONNECTOR: C-85
C-85
AB
PCM
60
46
66
57
45
44
64
55 56
65
62 63
52 53
5051
61
42
59
48
41
47
58
43
49
54
AC202313
C-90 (GR)
AB
CONNECTOR: C-90
C-90 (GR)
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-330
STEP 12. Check the harness for open circuit or damage
between PCM connector C-90 terminal 50 and A/T control
relay connector C-97 terminal 4.
Q: Is the harness wire in good condition?
YES : Go to Step 17.
NO : Repair or replace the harness wire.
PCM
60
46
66
57
45
44
64
55 56
65
62 63
52 53
5051
61
42
59
48
41
47
58
43
49
54
AC202313
C-90 (GR)
AB
CONNECTOR: C-90
C-90 (GR)
AC202440
1
3 4
2
CONNECTOR: C-97
AB
C-97
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-331
STEP 13. Check for a short circuit to ground between PCM
connector C-90 terminal 50 and A/T control relay
connector C-97 terminal 4.
Q: Is the harness wire in good condition?
YES : Go to Step 17.
NO : Repair or replace the harness wire.
PCM
60
46
66
57
45
44
64
55 56
65
62 63
52 53
5051
61
42
59
48
41
47
58
43
49
54
AC202313
C-90 (GR)
AB
CONNECTOR: C-90
C-90 (GR)
AC202440
1
3 4
2
CONNECTOR: C-97
AB
C-97
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-332
STEP 14. Measure the A/T control relay output voltage at
PCM connector C-91 by backprobing.
(1) Do not disconnect connector C-91.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 77 and ground by
backprobing.
• The measured voltage should equal battery positive
voltage.
(4) Measure the voltage between terminal 89 and ground by
backprobing.
• The measured voltage should equal battery positive
voltage.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage equal to battery positive
voltage between terminal 77 and ground, and between
terminal 89 and ground?
YES : Go to Step 17.
NO : Go to Step 15.
PCM
89
98
88
97
76 77
87
86
83
94
84
95
85
96
80
92
81
93
79
78
90 91
82
74
71 72 73
75
AC202312
CONNECTOR: C-91
AB
C-91 (GR)
AC002011AJ
C-91 HARNESS CONNECTOR:
HARNESS SIDE
AC002012 AJ
C-91 HARNESS CONNECTOR:
HARNESS SIDE
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