Mitsubishi Eclipse. Manual — part 624
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1039
STEP 10. Check the fuel pump operation.
(1) Disconnect fuel pump connector D-17.
(2) Use jumper wires to connect fuel pump connector terminal
5 to the positive battery terminal and terminal No. 4 to the
negative battery terminal.
• An operating sound of the fuel pump should be heard.
Q: Is the fuel pump operating properly?
YES : Go to Step 11.
NO : Replace the fuel pump. Then confirm that the
malfunction symptom is eliminated.
STEP 11. Check the continuity at fuel pump harness side
connector D-17.
(1) Disconnect the connector D-17 and measure at the harness
side.
(2) Check for the continuity between terminal No. 4 and
ground.
• Should be less than 2 ohms.
Q: Is the continuity normal?
YES : Go to Step 12.
NO : Repair harness wire damage between fuel pump
connector D-17 (terminal No. 4) and ground because
of open circuit or harness damage. Then confirm that
the malfunction symptom is eliminated.
AK300446
1
2
3
4
5
D-17 (GR)
AB
CONNECTOR: D-17
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01439
FUEL PUMP SIDE
CONNECTOR
AB
1 2 3
4 5
AK300446
1
2
3
4
5
D-17 (GR)
AB
CONNECTOR: D-17
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01440AC
1
2
3
4
5
D-17 HARNESS
SIDE CONNECTOR
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1040
STEP 12. Check for open circuit and short circuit to
ground and harness damage between fuel pump relay 2
connector C-105 (terminal No. 4) and fuel pump connector
D-17 (terminal No. 5).
NOTE: Check harness after checking intermediate connectors
C-101. If intermediate connectors are damaged, repair or
replace them. After to GROUP 00E, Harness Connector
Inspection
. Then check that the malfunction is elimi-
nated.
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
AK300746
CONNECTOR: C-105
AB
C-105
AK300446
1
2
3
4
5
D-17 (GR)
AB
CONNECTOR: D-17
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1041
STEP 13. Check connector C-51 at ECM <M/T> or
connector C-52 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
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-1042
STEP 14. Check the power supply voltage at ECM
connector C-51 <M/T> or PCM 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 21 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 and C-108 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 fuel pump relay 2 connector C-105 (terminal
No. 2) and ECM connector C-51 (terminal No. 21)
<M/T> or PCM connector C-52 (terminal No. 21)
<A/T> because of open circuit. Then confirm that the
malfunction symptom is eliminated.
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
AK000448AD
8 7
6 5
4 3
2
1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
31
32
33
34
35
29
C-51<M/T>, C-52<A/T>
HARNESS CONNECTOR:
COMPONENT SIDE
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