Mitsubishi 380. Manual — part 614

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-548

STEP 5. Check for Fuel Pump operation.
(1) Refer to Fuel Pump Operation Check

P.13A-664

.

Q: Is the actuator operating properly?

YES : Go to Step 6.
NO : Repair or replace it. Then confirm that the malfunction

symptom is eliminated.

STEP 6. Check the ignition system.
(1) Refer to INSPECTION PROCEDURE 27

− Ignition Circuit

System

P.13A-628

.

Q: Is the ignition system operating correctly?

YES : Go to Step 7.
NO : Repair or replace required components. Then confirm

that the malfunction symptom is eliminated.

STEP 7. Using diagnostic tool , check data list.

CAUTION

To prevent damage to diagnostic tool , always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting diagnostic tool .
(1) Check Data list item No. 16 while cranking engine.

Approximate value: - 3

° to BTDC ± 3°

Q: Is the advance ignition timing normal?

YES : Go to Step 8.
NO : Check that the crankshaft position sensor and timing

belt cover are in the correct position. Then confirm
that the malfunction symptom is eliminated.

AK303233

1

2

3

AB

B-118 (GR)

B-102 (GR)

B-101 (GR)

B-117 (GR)

B-103 (GR)

B-114 (GR)

CONNECTOR: B-101, B-102, B-103, B-114,

B-117, B-118

HARNESS CONNECTOR:

COMPONENT SIDE

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-549

STEP 8. Check the left bank injector.
(1) Disconnect the left bank injector connector B-27, B-26,

B-30.

(2) Measure the resistance between each injector side

connector terminal No. 1 and No. 2.

Standard value: 10.5

− 13.5 ohms [at 20°C (68°F)]

Q: Is the measured resistance between 10.5 and 13.5 ohms

[at 20

°C (68°F)]?

YES : Go to Step 9.
NO : Replace the faulty injector. Then confirm that the

malfunction symptom is eliminated.

STEP 9. Check the right bank injector resistance at
intermediate connector B-32.
(1) Disconnect the intermediate connector B-32.

(2) Measure the resistance between each male connector side

terminal.

a. Measure the resistance between terminal No. 5 and No.

9 at No. 1 cylinder injector.

b. Measure the resistance between terminal No. 10 and

No. 9 at No. 3 cylinder injector.

c. Measure the resistance between terminal No. 4 and No.

9 at No. 05 cylinder injector.

• Resistance should be between 10.5 and 13.5 ohms [at

20

°C (68°F)].

Q: Is the measured resistance between 10.5 and 13.5 ohms

[at 20

°C (68°F)]?

YES : Go to Step 12.
NO : Go to Step 10.

AK303075

M

1

2

CONNECTOR: B-26, B-27, B-30

B-30 (GR)

B-27 (GR)

B-26 (GR)

HARNESS CONNECTOR:

COMPONENT SIDE

AB

AK000559

2

1

INJECTOR SIDE
CONNECTOR

AB

AK303053

3

4

5

8

9

1

2

6

7

10

CONNECTOR: B-32

HARNESS CONNECTOR:

COMPONENT SIDE

AB

B-32 (B)

1 2 3
6 7 8

4 5
9 10

AK303098

B-32

INTERMEDIATE

CONNECTOR

AB

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-550

STEP 10. 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: 10.5

− 13.5 ohms [at 20 °C (68°F)]

Q: Is the measured resistance between 10.5 and 13.5 ohms

[at 20

°C (68°F)]?

YES : Go to Step 11.
NO : Replace the injector. Then confirm that the

malfunction symptom is eliminated.

STEP 11. Check harness connector B-03 or B-04 or B-01 at
right bank injector for damage.
(1) Check the injector connector, which deviates from the

standard value at Step 9.

Q: Is the harness 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

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

STEP 12. Check harness connector B-32 at intermediate
connector for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

AK303055

M

1

2

CONNECTOR: B-01, B-03, B-04

AB

B-01 (GR)

B-03 (GR)

B-04 (GR)

HARNESS CONNECTOR:

COMPONENT SIDE

AK000559

2

1

INJECTOR SIDE
CONNECTOR

AB

AK303055

M

1

2

CONNECTOR: B-01, B-03, B-04

AB

B-01 (GR)

B-03 (GR)

B-04 (GR)

HARNESS CONNECTOR:

COMPONENT SIDE

AK303053

3

4

5

8

9

1

2

6

7

10

CONNECTOR: B-32

HARNESS CONNECTOR:

COMPONENT SIDE

AB

B-32 (B)

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-551

STEP 13. Check harness connector B-27, B-26, B-30 at left
bank injector for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

STEP 14. Check harness connector B-20 at ENGINE-ECU
for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 15.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

AK303075

M

1

2

CONNECTOR: B-26, B-27, B-30

B-30 (GR)

B-27 (GR)

B-26 (GR)

HARNESS CONNECTOR:

COMPONENT SIDE

AB

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER