Mitsubishi Galant (2004+). Manual — part 634
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-87
STEP 15. Check PCM connector B-22 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
AC306248AE
B-22
(B)
CONNECTOR: B-22
PCM
AIR
CLEANER
JAE
94
98
107
103
112
91
100
109
101102
106
110
105
111
97
92
96
93
104
113
108
95
99
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-88
STEP 16. Using the oscilloscope, check the input shaft
speed sensor waveform at PCM connectors B-22 by using
check harness special tool MB991923.
(1) Disconnect all the connectors from the PCM.
(2) Connect special tool MB991923 (check harness) between
the PCM and the body-side harness connector.
AC306248AE
B-22
(B)
CONNECTOR: B-22
PCM
AIR
CLEANER
JAE
94
98
107
103
112
91
100
109
101102
106
110
105
111
97
92
96
93
104
113
108
95
99
AC209793AH
SPECIAL TOOL 23-PIN CONNECTOR
WITH RED TAPE
(PCM CONNECTOR B-22)
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
PCM
MB991923
BODY SIDE
HARNESS
B-22
(GR)
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-89
(3) Connect an oscilloscope probe to PCM connector B-22
terminal 111 and to 113.
(4) Start the engine and drive the vehicle at constant speed of
50 km/h (31 mph) (Gear range: 3rd gear).
(5) 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 or more and the minimum value 0.8
volt or less. The output waveform should not contain
electrical noise.
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?
YES : Go to Step 19.
NO : Go to Step 17.
STEP 17. Replace the input shaft speed sensor.
(1) Replace the input shaft speed sensor. Refer to GROUP
23B, Transaxle
(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 underdrive clutch retainer.
(1) Replace the underdrive clutch retainer. Refer to GROUP
23B, Underdrive Clutch and Input Shaft
(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.
AC210364
JAE
94
98
107
103
112
91
100
109
101
102
106
110
105
111
97
92
96
93
104
113
108
95
99
AC
B-22 CONNECTOR:
COMPONENT
SIDE VIEW
OSCILLO-
SCOPE
PROBE
ACX02131
NORMAL WAVEFORM
AD
(V)
5
0
AC305354AD
INPUT SHAFT
SPEED SENSOR
TRANSMISSION
RANGE SWITCH
AC001836AB
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
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.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст