Mitsubishi Eclipse. Manual — part 312
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-741
.
CIRCUIT OPERATION
• A diagnostic output is made from the ECM (termi-
nal No. 62) <M/T> or PCM (terminal No. 85)
<A/T> to the diagnostic output terminal (terminal
No. 7) of the data link connector.
.
COMMENT
• No power supply to ECM <M/T> or PCM <A/T>.
• Defective ground circuit of ECM <M/T> or PCM
<A/T>.
• Defective ECM <M/T> or PCM <A/T>.
• Improper communication line between ECM
<M/T> or PCM <A/T> and scan tool.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case: )
• Malfunction of ECM <M/T> or PCM <A/T> power
supply circuit.
• Malfunction of the ECM <M/T> or PCM <A/T>.
• Open circuit between ECM <M/T> or PCM <A/T>
and data link connector.
AK300060
PCM
CONNECTOR: C-57 <A/T>
AG
C-57 (GR)
AK300119
CONNECTOR: C-28
AB
C-28
AK300070
CONNECTOR: C-77
AB
C-77
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-742
DIAGNOSIS
STEP 1. Check connector C-56 at ECM <M/T> or connector
C-57 at PCM <A/T> for damage.
Q: Is the 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.
AK300416
58
60
61
53 52 51
55 54
56
59
62
57
CONNECTOR: C-56 <M/T>
C-56 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300735
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
97
CONNECTOR: C-57 <A/T>
C-57 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-743
STEP 2. Check for open circuit, short circuit to ground and
harness damage between data link connector C-29
(terminal No. 7) and ECM connector C-56 (terminal No. 62)
<M/T> or PCM connector C-57 (terminal No. 85) <A/T>.
AK300450
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
CONNECTOR: C-29
AB
C-29 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300416
58
60
61
53 52 51
55 54
56
59
62
57
CONNECTOR: C-56 <M/T>
C-56 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300735
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
97
CONNECTOR: C-57 <A/T>
C-57 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-744
NOTE: Check harness after checking intermediate connectors
C-28 and C-77. If intermediate connectors are damaged, repair
or replace them. Refer to GROUP 00E, Harness Connector
Inspection
. Then check that the malfunction is elimi-
nated.
Q: Is the harness wire in good condition?
YES : Refer to, INSPECTION PROCEDURE 29
− Power
Supply System and Ignition Switch
− IG System
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
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