Mitsubishi Montero (2002-2004). Manual — part 984
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
23Ad-47
STEP 3. Using scan tool MB991502, check data list item 66:
Overdrive Off Signal.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Start the engine and prepare to test drive the vehicle.
(Operate the auto-cruise)
(3) Set scan tool MB991502 to data reading mode for item 66,
Overdrive Off Signal.
• When driving at level road, the display should be "OFF."
• When driving at uphill road, the display should be "ON."
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the PCM 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.
ACX01539AD
MB991502
16-PIN
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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INSPECTION PROCEDURE 17: Shift Switch Assembly System
AC205256AB
Shift Switch Assembly System Circuit
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
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AC204395
CONNECTOR : C-04
AF
C-04 (B)
4
9
5
10
3
8
2
7
6
1
AC204188
CONNECTORS : D-01, D-32
D-01
D-32 (GR)
D-32
CQ
D-01
9 10
8
6 7
31 32
30
29
18 19 20 21
5
4
2
1
3
27
26
24
23
25
12 13 14 15 16 17
28
11
22
33
10
9
23
22
12
11
25
24
8
6 7
20
13
5
4
18
17
19
21
16
3
2
15
14
1
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
AC204191
CONNECTORS : D-208, D-212
5 6
2
4
3
1
JUNCTION BLOCK
(FRONT VIEW)
3
10
9
4
11
8
7
1
5
2
6
D-208
D-208
D-212
D-212
AS
SYMPTOM PROCEDURES <AUTOMATIC TRANSMISSION>
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SYMPTOM PROCEDURES
23Ad-50
.
CIRCUIT OPERATION
If the select switch of the shift switch assembly is set
to the sport mode, battery positive voltage will be
applied to the PCM (terminal 85). If the shift switch of
the shift switch assembly is set to "UP" or "DOWN"
position, battery positive voltage will be applied to the
PCM (terminals 68 or 77).
.
COMMENT
The cause is probably a malfunction of the transmis-
sion range switch circuit, shift switch assembly circuit
or a defective PCM.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case:)
• Malfunction of the transmission range switch
• Malfunction of the shift switch assembly select
switch
• Malfunction of the shift switch assembly shift
switch (Up)
• Malfunction of the shift switch assembly shift
switch (Down)
• Damaged harness, connector
• Malfunction of the PCM
AC204194
CONNECTORS : E-11, E-113, E-114, E-115
E-113
E-113
E-11
E-11
AX
E-115
E-115
E-114
E-114
3
10
16
9
7 8
6
1
4
2
5
11
14
1213
15
1
6
2
7 8 9 10 11 12 13 14
3 4 5
38
28
16
33
22
10
31
19
7
1
18
30
29
17
5
6
21
20
32
8
2
9
25
13
3
24
23
3435
1112
27
26
3637
14
4
15
8
3
4 5
1
2
6 7
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