Mitsubishi Montero (2002-2004). Manual — part 739
TSB Revision
SYMPTOM PROCEDURES
13Ad-5
INSPECTION PROCEDURE 2: Scan Tool Communication with PCM Is Not Possible.
RED
-
WHITE
RV METER
RED
-WHITE
RED
-
WHITE
GREEN-
ORANGE
AK201153
GREEN-
ORANGE
28
74
7
DATA LINK
CONNECTOR
30
32
31
5
15
5
8
10
13
11
14
16 17
1 2 3 4
18
9
12
19 20
6 7
15
D-08
(MU801585)
POWERTRAIN
CONTROL
MODULE (PCM)
WITH
RV METER
WITHOUT
RV METER
9
6
10
17
18
29
2
3 4
7 8
19 20
30 31
12
11
24
33 34 35
21
32
27
26
36 37
28
38
25
13
15
14
16
23
22
1
5
E-111
1
10
9
2
11
3
12
4
13
5
14
6
15
7
16
8
D-118
Data Link Connector Circuit
1
12
23 24 25 26
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20 21 22
27 28 29 30 31 32 33
10 11
D-29
61
656667686970 717273
74757677787980 8182
8384
858687
8889
62
6364
D-134
(MU803804)
AK200976
DATA LINK
CONNECTOR
AB
D-118(B)
CONNECTOR: D-118
AK201038
CONNECTOR: D-134
AD
PCM
D-134(GR)
TSB Revision
SYMPTOM PROCEDURES
13Ad-6
.
CIRCUIT OPERATION
• A diagnostic output is made from the PCM (termi-
nal No. 74) to the diagnostic output terminal (ter-
minal No. 7) of the data link connector.
.
COMMENT
• No power supply to PCM.
• Defective ground circuit of PCM.
• Defective PCM.
• Improper communication line between PCM and
scan tool.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case: )
• Malfunction of PCM power supply circuit.
• Malfunction of the PCM.
• Open circuit between PCM and data link connec-
tor.
DIAGNOSIS
STEP 1. Check harness connector D-134 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 2.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK201043
E-111
AB
CONNECTOR: E-111
AK201042AC
CONNECTOR: D-08
D-08
AK201044
D-29
AB
CONNECTOR: D-29
AK201166
61
62
63
64
65
66
67
68
69
70
71
76
77
78
79
85
86
87
80
72
73
74
75
81
82
83
84
88
89
CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
TSB Revision
SYMPTOM PROCEDURES
13Ad-7
STEP 2. Check for open circuit, short circuit to ground and
harness damage between data link connector D-118
(terminal No. 7) and PCM connector D-134 (terminal No.
74).
NOTE: Check harness after checking intermediate connectors
D-210, D-08 and E-111. If intermediate connector D-210, D-08
and E-111 are damaged, repair or replace them. Refer to
GROUP 00E, Harness Connector Inspection
check that the malfunction is eliminated.
Q: Is the harness wire in good condition?
YES : Refer to INSPECTION PROCEDURE 28
− Power
Supply System and Ignition Switch-IG System
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
AK201285
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
AB
D-118(B)
CONNECTOR: D-118
HARNESS CONNECTOR:
COMPONENT SIDE
AK201166
61
62
63
64
65
66
67
68
69
70
71
76
77
78
79
85
86
87
80
72
73
74
75
81
82
83
84
88
89
CONNECTOR: D-134
AB
PCM
D-134(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
TSB Revision
SYMPTOM PROCEDURES
13Ad-8
INSPECTION PROCEDURE 3: The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check
Engine Lamp) Does Not Illuminate Right after the Ignition Switch Is Turned to the "ON" Position.
AK201154
RED-
WHITE
RED-
WHITE
BLA
CK-
WHITE
BLUE-
BLA
CK
14
7
38
37 38
39
40
43
41 42
44
47
45 46
32
31
33 34 35 36
D-04
62
1
2
2
R
IG2
ST
LOCK
ACC
IG1
IGNITION
SWITCH
MALFUNCTION INDICATOR LAMP
SERVICE ENGINE SOON
OR CHECK ENGINE LAMP
POWERTRAIN
CONTROL
MODULE (PCM)
3
4 5 6
1 2
D-204
5 6
1
3
2
4
D-208
MU801331
9
6
10
17
18
29
2
3 4
7 8
19 20
30 31
12
11
24
33 34 35
21
32
27
26
36 37
28
38
25
13
15
14
16
23
22
1
5
E-111
53 54 55 56 57 58
59
60
63
61 62
64
67
65 66
52
51
D-03
13
3
5
7
12
9
1
6
8
11
10
2
4
D-210
(MU801860)
Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) Circuit
(
)
1
2
3
5
6 7 8 9
4
20
21 22
232425
2627
10111213
14 15
16 1718
19
D-132
(MU803802)
6
10A
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