Mitsubishi Montero (2004+). Manual — part 878
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-87
STEP 14. Check the harness for open circuit or damage
between input shaft speed sensor connector C-16 terminal
1 and PCM connector D-134 terminal 88.
Q: Is the harness wire in good condition?
YES : Go to Step 16.
NO : Repair or replace the harness wire.
AC204747
CONNECTOR : C-16
C-16 (B)
AB
1
3
2
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
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-88
STEP 15. Check PCM connector D-134 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
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
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-89
STEP 16. Using an oscilloscope, check the input shaft
speed sensor waveform at PCM connector D-134 by
backprobing.
(1) Do not disconnect connector D-134.
(2) Connect an oscilloscope probe to PCM connector D-134
terminal 64 and terminal 88 by backprobing.
(3) Start the engine and drive the vehicle at constant speed of
50 km/h (31 mph). (Gear range: 4th 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.
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
AC204946 AE
OSCILLO-
SCOPE
PROBE
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
ACX02131
NORMAL WAVEFORM
AD
(V)
5
0
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-90
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.
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: 4th 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.
ACX01225AE
INPUT SHAFT
SPEED SENSOR
ACX02132AB
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст