Mitsubishi Eclipse. Manual — part 596
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-927
STEP 4. Using scan tool MB991958, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items in the actuator test. Refer to
Actuator Test Reference Table
a. Item 07: Fuel pump.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES : Go to Step 5.
NO : Repair or replace. Then confirm that the malfunction
symptom is eliminated.
STEP 5. Check the ignition system.
(1) Connect the tachometer to engine speed detection
connector A-12X (terminal No. 1).
(2) Crank the engine.
• A tachometer moves.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does a tachometer move?
YES : Go to Step 6.
NO : Refer to INSPECTION PROCEDURE 33
− Ignition
Circuit System
STEP 6. Check the ignition timing.
(1) Check the ignition timing at cranking.
Standard value: 5
°BTDC ± 3°
Q: Is the ignition timing normal?
YES : Go to Step 7.
NO : Check that the crankshaft position sensor and timing
belt cover are in the correct position. Then confirm
that the malfunction symptom is eliminated.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
AK300747
1
CONNECTOR: A-12X
AB
A-12X
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-928
STEP 7. Check the left bank injector.
(1) Disconnect the left bank injector connector B-02, B-06,
B-25.
(2) Measure the resistance between each injector side
connector terminal No. 1 and No. 2.
Standard value: 13
− 16 ohms [at 20°C (68°F)]
Q: Is the measured resistance between 13 and 16 ohms?
YES : Go to Step 8.
NO : Replace the faulty injector. Then confirm that the
malfunction symptom is eliminated.
STEP 8. Check the right bank injector resistance at injector
intermediate connector B-48.
(1) Disconnect the injector intermediate connector B-48.
(2) Measure the resistance between each male connector side
terminal.
a. Measure the resistance between terminal 1 and 2 when
measuring No. 1 cylinder injector.
b. Measure the resistance between terminal 1 and 3 when
measuring No. 3 cylinder injector.
c. Measure the resistance between terminal 1 and 4 when
measuring No. 5 cylinder injector.
• Resistance should be between 13 and 16 ohms [at 20°C
(68
°F)].
Q: Is the measured resistance between 13 and 16 ohms?
YES : Go to Step 11.
NO : Go to Step 9.
AK300753
1
2
CONNECTORS: B-02, B-06, B-25
AB
B-02 (GR)
B-06 (GR) B-25 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
AK300751
1
2
3
4
CONNECTOR: B-48
AB
B-48 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000447
1 2
3 4
INJECTOR
INTERMEDIATE
CONNECTOR
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-929
STEP 9. Check the right bank injector.
(1) Remove the intake manifold.
(2) Disconnect the right bank injector connector, which
deviates from the standard value at Step 8.
(3) Measure the resistance between injector side connector
terminal No. 1 and No. 2.
Standard value: 13
− 16 ohms [at 20°C (68°F)]
Q: Is the measured resistance between 13 and 16 ohms?
YES : Go to Step 10.
NO : Replace the injector. Then confirm that the
malfunction symptom is eliminated.
STEP 10. Check connector B-01 or B-05 or B-26 at right
bank injector for damage.
(1) Check the injector connector, which deviates from the
standard value at Step 8.
Q: Is the connector in good condition?
YES : Repair harness wire between injector intermediate
connector and right bank injector connector because
of harness damage. Then confirm that the
malfunction symptom is eliminated.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
STEP 11. Check connector B-48 at injector intermediate
connector for damage.
Q: Is the connector in good condition?
YES : Go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK300752
1
2
CONNECTORS: B-01, B-05, B-26
AB
B-05 (GR) B-26 (GR)
B-01 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
AK300752
1
2
CONNECTORS: B-01, B-05, B-26
AB
B-05 (GR) B-26 (GR)
B-01 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300751
1
2
3
4
CONNECTOR: B-48
AB
B-48 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-930
STEP 12. Check connector B-02, B-06, B-25 at left bank
injector for damage.
Q: Is the connector in good condition?
YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
STEP 13. Check connector C-51 at ECM <M/T> or
connector C-52 <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.
AK300753
1
2
CONNECTORS: B-02, B-06, B-25
AB
B-02 (GR)
B-06 (GR) B-25 (GR)
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
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
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