Mitsubishi 380. Manual - part 501

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-96

STEP 4. Check for harness damage between manifold 
absolute pressure sensor connector B-02 (terminal No. 3) 
and ENGINE-ECU connector B-20 (terminal No. 25).
Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO :  Repair it. Then go to Step 10.

1

2

3

CONNECTOR: B-02

03DB223A

MANIFOLD

ABSOLUTE

PRESSURE

SENSOR

INTAKE

MANIFOLD

B-02 (B)

HARNESS 

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-97

STEP 5. Measure the ground voltage at ENGINE-ECU 
connector B-20 by using  ECU check harness special tool 
MB992044.
(1) Disconnect the all ENGINE-ECU connectors and connect  

ECU check harness special tool MB992044 between the 
separated connectors.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 12 and ground.

• Voltage should be 0.5 volt or less.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the measured voltage 0.5 volt or less?

YES : Go to Step 8.
NO :  Go to Step 6.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

03DB242A

B-20 HARNESS 

CONNECTOR 

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-98

STEP 6. Check harness connector B-02 at the manifold 
absolute pressure sensor and harness connector B-20 at 
ENGINE-ECU for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 7.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 10.

1

2

3

CONNECTOR: B-02

03DB223A

MANIFOLD

ABSOLUTE

PRESSURE

SENSOR

INTAKE

MANIFOLD

B-02 (B)

HARNESS 

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-99

STEP 7. Check for harness damage between manifold 
absolute pressure sensor connector B-02 (terminal No. 2) 
and ENGINE-ECU connector B-20 (terminal No. 12).
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then go to Step 10.

STEP 8. Check harness connector B-02 at manifold 
absolute pressure sensor for damage.
Q: Is the harness connector in good condition?

YES : Replace the manifold absolute pressure sensor. Then 

go to Step 10.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 10.

1

2

3

CONNECTOR: B-02

03DB223A

MANIFOLD

ABSOLUTE

PRESSURE

SENSOR

INTAKE

MANIFOLD

B-02 (B)

HARNESS 

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

1

2

3

CONNECTOR: B-02

03DB223A

MANIFOLD

ABSOLUTE

PRESSURE

SENSOR

INTAKE

MANIFOLD

B-02 (B)

HARNESS 

CONNECTOR:

COMPONENT SIDE