Mitsubishi Eclipse. Manual — part 314
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-749
STEP 5. Check connector C-53 at ECM <M/T> or connector
C-50 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK300417
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
CONNECTOR: C-53 <M/T>
C-53 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300414
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
C-50 (GR)
CONNECTOR: C-50 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-750
STEP 6. Measure the power supply voltage ECM connector
C-53 <M/T> or PCM connector C-50 <A/T>.
(1) Disconnect the connector C-53 <M/T> or C-50 <A/T> and
measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
AK300417
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
CONNECTOR: C-53 <M/T>
C-53 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300414
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
C-50 (GR)
CONNECTOR: C-50 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-751
(3) Measure the voltage between terminal No. 36 <M/T> or No.
22 <A/T> and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Replace the ECM or PCM. Then confirm that the
malfunction symptom is eliminated.
NO : Check harness connectors C-28 at intermediate
connector for damage, and repair or replace as
required. Refer to GROUP 00E, Harness Connector
Inspection
. If intermediate connectors is in
good condition, repair harness wire between
combination meter connector C-41 (terminal No. 41)
and ECM connector C-53 (terminal No. 36) <M/T> or
PCM connector C-50 (terminal No. 22) <A/T>
because of open circuit. Then confirm that the
malfunction symptom is eliminated.
AK000381
<M/T>
C-53 HARNESS
CONNECTOR:
COMPONENT SIDE
AK
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
AK000377AN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
<A/T>
C-50 HARNESS
CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-752
INSPECTION PROCEDURE 4: The Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check
Engine Lamp) Remains Illuminated and Never Goes Out.
AK201266
44 45
41
46 47
42 43
49 50 5152
48
55 56
54
53
3
2
4 5 6
1 2 3
4 5 6
GREEN
1
RED-
YELLO
W
RED-
YELLO
W
BLA
CK-
WHITE
R
IG2
ST
LOCK
ACC
IG1
C-111
MU801331
IGNITION
SWITCH
Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) Circuit
C-87
2
6
25
JUNCTION
BLOCK
52
C-41
41
C-28
MALFUNCTION INDICATOR LAMP
(SERVICE ENGINE SOON OR
CHECK ENGINE LAMP)
C-53 <M/T>
(MU803771)
C-50 <A/T>
(MU803784)
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
21
36 <M/T>
22 <A/T>
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
34
33
32
36
35
37
42
45
31
39
38
46
40 41
43 44
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
1
6
4 5
11
10
1213
15
17
16
14
19
18
8 9
7
20
2 3
2122 23 2425 26 27 28
C-108
23
7.5A
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