Mitsubishi Eclipse. Manual — part 617
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1011
STEP 2. Check the output voltage at ECM harness side
connector C-51 <M/T> or PCM harness side connector
C-52 <A/T>.
(1) Disconnect the connector C-51 <M/T> or C-52 <A/T> and
measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 18 and ground.
• Voltage should be between 4.8 and 5.2 volts. (Fan
rotates at high speed.)
(4) Connect a jumper cable between terminal No. 18 and
ground.
• The fan should stop.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage and fan condition normal?
YES : Replace the ECM or PCM. Then confirm that the
malfunction symptom is eliminated.
NO : Go to Step 3.
AK300458
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
CONNECTOR: C-52 <A/T>
C-52 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300443
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
CONNECTOR: C-51 <M/T>
C-51 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK000368
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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25
26
27
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29
30
32
33
34
35
C-51<M/T>, C-52<A/T>
HARNESS CONNECTORS:
COMPONENT SIDE
AE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1012
STEP 3. Check for open circuit and short circuit to ground
and harness damage between fan controller A-30 (terminal
No. 2) and ECM connector C-51 (terminal No. 18) <M/T> or
PCM connector C-52 (terminal No. 18) <A/T>.
AK300451
1
2
3
CONNECTOR: A-30
AB
A-30 (GR)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK300458
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
CONNECTOR: C-52 <A/T>
C-52 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300443
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
CONNECTOR: C-51 <M/T>
C-51 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1013
NOTE: Check harness after checking intermediate connector
C-07. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
. Then confirm that the malfunction symptom is elimi-
nated.
Q: Is the harness wire in good condition?
YES : Refer to
− Engine Cooling Diagnosis − Symptom
Chart
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1014
INSPECTION PROCEDURE 29: Power supply system and ignition switch
− IG system.
AK103098
6
2 3
4 5 6
GREEN
1
1
3
2
4
1
4
8
7
2
6
3
5
5
BLA
CK-
ORANGE
BLA
CK-
ORANGE
BLA
CK-
ORANGE
RED-
WHITE
RED
RED
RED
WHITE-VIOLET
RED-
WHITE
RED-
WHITE
BLA
CK
BLA
CK
BLA
CK
BLA
CK
R
IG2
ST
LOCK
ACC
IG1
C-87
C-111
MU801331
IGNITION
SWITCH
2
6
1
JUNCTION
BLOCK
99 <M/T>*2
98 <A/T>*4
C-07
MU801333
C-07
60 <M/T>*1
66 <A/T>*3
MFI RELAY
1
2
4
3
57 <M/T>*1
49 <A/T>*3
BATTERY
BACKUP
47 <M/T>*1
47 <A/T>*3
59 <M/T>*1
41 <A/T>*3
POWER
SOURCE
58 <M/T>*1
48 <A/T>*3
46 <M/T>*1
42 <A/T>*3
ENGINE CONTROL MODULE (ECM) <M/T> OR POWERTRAIN CONTROL MODULE (PCM) <A/T>
3
3
NOTE
*1:ECM connector C-58 <M/T>
*2:ECM connector C-62 <M/T>
*3:PCM connector C-55 <A/T>
*4:PCM connector C-59 <A/T>
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58 <M/T> (MU803782)
C-55 <A/T> (MU803781)
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58 59
60 61 62 63
64 65 66
47
41
98
78
71
88 89
76 77
72
79
91
73
80
74
75
81
92
82 83
93
84 85
94
86 87
95 96
90
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97
96
100
89
78
71
90
76 77
75
72
79
97
C-62 <M/T> (MU803783)
C-59 <A/T> (MU803782)
15 16
26 27 28 29
32 33 34
17 18 19 20 21 22 23 24 25
30 31
36 37
35
38
10
11 12 13
1 2 3
4 5 6 7 8 9
14
C-89
C-89
WHITE
WHITE
BATTERY
RELAY
BOX
9 20A
7.5A
RED-
WHITE
RED-
WHITE
8
C-07
Power Supply and Ignition Switch-IG Circuit
3 4
1 2
A-18X
BLA
CK
1
6
4 5
11
10
12 13 14
8 9
7
2 3
C-112
MU801857
17
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