Mitsubishi Montero Sport (2004+). Manual — part 631
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AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-89
STEP 17. Replace the input shaft speed sensor.
(1) Replace the input shaft speed sensor. Refer to GROUP
23B, Transmission
(2) Test drive the vehicle.
(3) Check for A/T diagnostic trouble code.
Q: Is A/T DTC 22 set?
YES : Go to Step 18.
NO : The procedure is complete.
STEP 18. Replace the reverse clutch retainer.
(1) Replace the reverse clutch retainer. Refer to GROUP 23B,
Reverse and Overdrive Clutches
.
(2) Test drive the vehicle.
(3) Check for A/T diagnostic trouble code.
Q: Is A/T DTC 22 set?
YES : An A/T DTC may have set due to external radio
frequency interference (RFI) possibility caused by
cellular phone activity, or aftermarket components
installed on the vehicle.
NO : The procedure is complete.
AC002609AE
INPUT SHAFT
SPEED SENSOR
AC103774AB
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AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-90
STEP 19. Using scan tool MB991958, check data list item
22: Input Shaft Speed Sensor.
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.
(3) Set scan tool MB991958 to data-reading mode.
• Item 22: Input Shaft Speed Sensor.
• When driving at constant speed of 50 km/h (31
mph), the display should be "1,400
− 1,700 r/min"
(Gear range: 3rd gear).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor 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.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
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AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-91
DTC 23 (P0720): Output Shaft Speed Sensor System
Output Shaft Speed Sensor System Circuit
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AUTOMATIC TRANSMISSION DIAGNOSIS
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AUTOMATIC TRANSMISSION
23A-92
.
CIRCUIT OPERATION
• The output shaft speed sensor generates a 0 ⇔
5 volt pulse signal when the output shaft rotates.
The pulse signal frequency increases with a rise
in output shaft speed.
• The output shaft speed sensor is connected to
the PCM (terminals 57 and 104) via the output
shaft speed sensor connector (terminals 1 and
2).
• The PCM detects the output shaft speed by the
signal input to terminal 104.
• The output shaft speed sensor generates the
pulse signal as the teeth of the output shaft pass
the magnetic tip of the sensor.
.
AC202387
1 2 3
CONNECTOR: B-15
B-15 (GR)
AB
AC202363
4
3
10 11
9
8
5
12
1
6
2
7
9 10
8
6 7
31 32
30
29
21
20
19
18
5
4
2
1
3
27
26
24
23
25
16
15
14
13
12
28
17
33
22
11
22
9 10
20
19
6 7 8
21
17
1516
5
14
12 13
3
2
4
18
11
1
CONNETORS: C-30, C-71, C-96
AB
C-30
C-71
C-96
C-30
C-71
C-96
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)
AC202365
JUNCTION BLOCK (REAR)
2
1
M
4
3
19 20
6
17
7
5
15
14
16
8
18
3
11 12
4
2
10
1
9
13
CONNECTORS: D-08, D-13
AB
D-08
D-13
D-08
D-13
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