Mitsubishi Montero Sport (2004+). Manual — part 630
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-85
Q: Are the connectors and terminals in good condition?
YES : Go to Step 14.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
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-86
STEP 14. Check the harness for open circuit or damage
between input shaft speed sensor harness side connector
B-16 terminal 1 and PCM connector C-90 terminal 57.
Q: Is the harness wire in good condition?
YES : Go to Step 16.
NO : Repair or replace the harness wire.
AC202362
2 3
1
CONNECTOR: B-16
AB
B-16 (B)
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-87
STEP 15. Check PCM connector C-90 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Are the connector and terminals in good condition?
YES : Replace the PCM.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
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-88
STEP 16. Using an oscilloscope, check the input shaft
speed sensor waveform at PCM connectors C-90 and C-92
by backprobing.
(1) Do not disconnect connectors C-90 and C-92.
(2) Connect an oscilloscope probe to PCM connector C-90
terminal 57 and to PCM connector C-92 terminal 103 by
backprobing.
(3) Start the engine and drive the vehicle at constant speed of
50 km/h (31 mph) (Gear range: 3rd gear).
(4) Check the input shaft speed sensor waveform.
• The input shaft speed sensor waveform should show a
pattern similar to the illustration. The maximum value
should be 4.8 volts and more and the minimum value
0.8 volt and less. The output waveform should not con-
tain electrical noise.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?
YES : Go to Step 19.
NO : Go to Step 17.
AC202316
PCM
60
46
26
57
45
44
64
55 56
65
62 63
52 53
5051
61
42
59
48
41
47
58
43
49
54
120
107
119
106
129 130
118
105
117
114115116
126127128
104
111
103
112
108
101102
109110
121122123
124
113
125
CONNECTORS: C-90, C-92
AB
C-90
C-92
C-90 (GR)
C-92 (GR)
AC001899AH
C-90 HARNESS CONNECTOR:
HARNESS SIDE
C-92 HARNESS CONNECTOR:
HARNESS SIDE
PROBE
OSCILLO-
SCOPE
ACX02131
NORMAL WAVEFORM
AD
(V)
5
0
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