Mitsubishi Eclipse. Manual — part 194
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-269
STEP 5. Measure power supply voltage at ECM connector
C-56 <M/T> or PCM connector C-50 <A/T> by backprobing.
(1) Do not disconnect the connector C-56 <M/T> or C-50
<A/T>.
(2) Turn the ignition switch to the "ON" position.
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
AK300414
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
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28
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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-270
(3) Measure the voltage between terminal No. 60 <M/T> or No.
3 <A/T> and ground by backprobing.
• 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 : Go to Step 8.
NO : Go to Step 6.
AK000289
<M/T>
C-56 HARNESS
CONNECTOR:
HARNESS SIDE
5152 53 54 55 56
57 58 59 60 6162
AI
AK000290
1
2
3 4
5 6
7 8
9 10 111213 1415 16 17 18 19 20 21 22 23
24 25
26 27 28 29
30 313233
34 35
AJ
C-50 HARNESS
CONNECTOR:
HARNESS SIDE
<A/T>
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-271
STEP 6. Check connector C-56 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 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
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
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-272
STEP 7. Check for open circuit and short circuit to ground
between heated oxygen sensor (front) connector B-17
(terminal No. 3) and ECM connector C-56 (terminal No. 60)
<M/T> or PCM connector C-50 (terminal No. 3) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
AK300403
1
2
3
4
AB
B-17 (B)
HEATED OXYGEN
SENSOR (FRONT)
CONNECTOR: B-17
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
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