Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 323
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-491
STEP 4. Check connector C-62 at ECM <M/T> or connector
C-59 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then confirm that
the malfunction symptom is eliminated.
STEP 5. Check the ignition switch-IG signal voltage at ECM
harness side connector C-62 <M/T> or PCM harness side
connector C-59 <A/T>.
(1) Disconnect the connector C-62 <M/T> or C-59 <A/T> and
measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 99 <M/T> or 98 <A/
T> and ground.
•
Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?
YES : Go to Step 6.
NO : Check harness connector C-07, C-89 and C-101 at
intermediate connector for damage, and repair or
replace as required. Refer to, GROUP 00E, Harness
Connector Inspection (
). If intermediate
connectors are in good condition, repair harness wire
between ignition switch connector C-87 terminal 2
and ECM connector C-62 terminal 99 <M/T> or PCM
connector C-59 terminal 98 <A/T> because of open
circuit. Then confirm that the malfunction symptom is
eliminated.
AK000225
CONNECTOR : C-62<M/T>, C-59<A/T>
C-59
C-62
PCM<A/T>
ECM<M/T>
AL
AK000372
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
<M/T>
C-62 HARNESS
SIDE CONNECTOR
AC
AK000373AC
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
<A/T>
C-59 HARNESS
SIDE CONNECTOR
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-492
STEP 6. Check the backup power supply voltage at ECM
harness side connector C-58 <M/T> or PCM harness side
connector C-55 <A/T>.
(1) Disconnect the connector C-58 <M/T> or C-55 <A/T> and
measure at the harness side.
(2) Measure the voltage between terminal 60 <M/T> or 66 <A/
T> and ground.
•
Voltage should be battery positive voltage.
Q: Is the voltage normal?
YES : Go to Step 7.
NO : Check harness connector C-28, C-78 and C-89 at
intermediate connector for damage, and repair or
replace as required. Refer to, GROUP 00E, Harness
Connector Inspection (
). If intermediate
connectors are in good condition, repair harness wire
between fusible link (4) and ECM connector C-58
terminal 60 <M/T> or PCM connector C-55 terminal
66 <A/T> because of open circuit. Then confirm that
the malfunction symptom is eliminated.
STEP 7. Check the continuity at ECM harness side
connector C-58 <M/T> or PCM harness side connector C-
55 <A/T>.
(1) Disconnect the connector C-58 <M/T> or C-55 <A/T> and
measure at the harness side.
(2) Check for the continuity between terminal (58, 46) <M/T> or
(42, 48) <A/T> and ground.
•
Should be less than 2 ohm.
Q: Is the continuity normal?
YES : Go to Step 8.
NO : Repair harness wire between ECM connector C-58
terminal (58, 46) <M/T> or PCM connector C-55
terminal (42, 48) <A/T> and ground because of open
circuit or harness damage. Then confirm that the
malfunction symptom is eliminated.
AK000374AC
47 46 45
41
42
43
44
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
<M/T>
C-58 HARNESS
SIDE CONNECTOR
AK000375AC
<A/T>
C-55 HARNESS
SIDE CONNECTOR
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
AK000376AC
47 46 45
41
42
43
44
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
<M/T>
C-58 HARNESS
SIDE CONNECTOR
AKX01437
<A/T>
C-55 HARNESS
SIDE CONNECTOR
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
AH
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-493
STEP 8. Check the power supply voltage at ECM harness
side connector C-58 <M/T> or PCM harness side connector
C-55 <A/T>.
(1) Disconnect the connector C-58 <M/T> or C-55 <A/T> and
measure at the harness side.
(2) Measure the voltage between terminal 57 <M/T> or 49 <A/
T> and ground.
•
Voltage should be battery positive voltage.
Q: Is the voltage normal?
YES : Go to Step 9.
NO : Repair harness wire between MFI relay connector A-
21X terminal 2 and ECM connector C-58 terminal 57
<M/T> or PCM connector C-55 terminal 49 <A/T>
because of open circuit. Then confirm that the
malfunction symptom is eliminated.
STEP 9. Check the power supply voltage at ECM harness
side connector C-58 <M/T> or PCM harness side connector
C-55 <A/T>.
(1) Disconnect the connector C-58 <M/T> or C-55 <A/T> and
measure at the harness side.
(2) Using a jumper wire, connect terminal 57 <M/T> or 49 <A/
T> to ground.
(3) Measure the voltage between terminal (47, 59) <M/T> or
(41, 47) <A/T> and ground.
•
Voltage should be battery positive voltage.
Q: Is the voltage normal?
YES : Replace the ECM or PCM. Then confirm that the
malfunction symptom is eliminated.
NO : Repair harness wire between MFI relay connector A-
21X terminal 1 and ECM connector C-58 terminal (47,
59) <M/T> or PCM connector C-55 terminal (41, 47)
<A/T> because of open circuit. Then confirm that the
malfunction symptom is eliminated.
AK000378AC
47 46 45
41
42
43
44
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
<M/T>
C-58 HARNESS
SIDE CONNECTOR
AK000379AD
<A/T>
C-55 HARNESS
SIDE CONNECTOR
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
AK000380AC
47 46 45
41
42
43
44
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
<M/T>
C-58 HARNESS
SIDE CONNECTOR
AKX01438
<A/T>
C-55 HARNESS
SIDE CONNECTOR
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
AH
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-494
INSPECTION PROCEDURE 30: Fuel pump system.
M
AK000717
2
3 4
1 2 3
4
4 5 6
1 2
1
3
2
4 5
4
8
7
2
6
3
5
1
6
GREEN
3
BLA
CK-
WHITE
1
BLA
CK-
WHITE
BLA
CK-
WHITE
BLA
CK-
WHITE
BLA
CK-
WHITE
5
BLA
CK
GREEN
GREEN
GREEN
BLA
CK
IG2
ST
LOCK
ACC
IG1
C-87
2
5
C-07
MU801333
29
JUNCTION
BLOCK
R
C-101
MU801331
IGNITION
SWITCH
3
ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>
FUEL PUMP
AND GAUGE UNIT
FUEL PUMP RELAY
A-20X
3
4
1
2
21
6
D-17
(MU802058)
5
1
5
4
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-28
7 8
5
3 4
35
34
10 11 12
2122 23 24
13 14 15
25 26 27
16
28
17
18 19 20
29
30 31
32 33
36 37
38
9
1 2
6
4
17
1
12 13 14
18
30
41
34
3
16
10
6 7
19
31
42
20
32
43
21
33
25
24
26
36
35
37
29
28
15
27
38
8 9
39 40
11
2
22
5
23
C-90
C-51<M/T>,C-52<A/T>
(MU803784)
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
3132 33
34 35
1
10
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