Mitsubishi Galant 9G. Manual — part 517
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-146
STEP 23. Check transmission range switch connector
B-110 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 24.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC210068
CONNECTOR: B-110
B-110 (B)
AE
TRANSMISSION
RANGE SWITCH
1
7
2
8
3
5
9
4
10
6
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-147
STEP 24. Measure the transmission range switch output
voltage at PCM connector B-21 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.
(3) Turn the ignition switch to the "ON" position.
(4) Move the selector lever to the "D" position.
AC306248AC
B-21
(B)
CONNECTOR: B-21
PCM
AIR
CLEANER
73
80
54
67
60
71 72
77 78 79
64
51
59
58
65
52
66
53
75
74
76
81 82
83
63
JAE
62
68
61
55
69
56
70
57
AC209793AG
SPECIAL TOOL 33-PIN CONNECTOR
(PCM CONNECTOR B-21)
B-21
(GR)
55
56
54 53 52 51
57
62 61 60 59 58
63
69 68 67 66 65 64
70
75 74 73 72 71
76
82 81 80 79 78 77
83
PCM
MB991923
BODY SIDE
HARNESS
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-148
(5) Measure the voltage between terminal 73 and ground.
• The voltage should equal battery voltage
(approximately12 volts).
(6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES : Go to Step 11.
NO : Go to Step 25.
STEP 25. Check PCM connector B-21 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Are the connector and terminals in good condition?
YES : Go to Step 26.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC210403
51
58
71
64
77
76
83
70
63
57
73 72
75 74
80
82 81
79 78
54
67
JAE
62
69
56
61
68
55
59
66
60
53
65
52
AC
B-21 HARNESS
CONNECTOR:
COMPONENT SIDE
AC306248AC
B-21
(B)
CONNECTOR: B-21
PCM
AIR
CLEANER
73
80
54
67
60
71 72
77 78 79
64
51
59
58
65
52
66
53
75
74
76
81 82
83
63
JAE
62
68
61
55
69
56
70
57
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-149
STEP 26. Check harness for open circuit or short circuit to
ground between PCM connector B-21 terminal 73 and
transmission range switch connector B-110 terminal 1.
Q: Is the harness wire in good condition?
YES <Vehicles without sport mode> : Go to Step 5.
YES <Vehicles with sport mode> : Go to Step 27.
NO : Repair or replace the harness wire.
AC306248AC
B-21
(B)
CONNECTOR: B-21
PCM
AIR
CLEANER
73
80
54
67
60
71 72
77 78 79
64
51
59
58
65
52
66
53
75
74
76
81 82
83
63
JAE
62
68
61
55
69
56
70
57
AC210068
CONNECTOR: B-110
B-110 (B)
AE
TRANSMISSION
RANGE SWITCH
1
7
2
8
3
5
9
4
10
6
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