Mitsubishi 380. Manual - part 571

 

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Mitsubishi 380. Manual - part 571

 

 

MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MPI)

13A-376

STEP 6. Measure the sensor supply voltage at ECU 
connector B-20 by using engine ECU check harness 
special tool MB992044.
(1) Disconnect the all ECU connectors and connect engine 

ECU check harness special tool MB992044 between the 
separated connectors.

(2) Disconnect the camshaft position sensor connector B-106.
(3) Turn the ignition switch to the "ON" position.

(4) Measure the voltage between terminal No. 38 and ground.

• Voltage should be between 4.9 and 5.1 volts.

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

Q: Is the measured voltage between 4.9 and 5.1 volts?

YES : Go to Step 7.
NO :  Go to Step 8.

STEP 7. Check harness connector B-20 at ECU for 
damage.
Q: Is the harness connector in good condition?

YES : Repair harness wire between camshaft position 

sensor connector B-106 (terminal No. 2) and ECU 
connector B-22 (terminal No. 38) because of open 
circuit. Then go to Step 20.

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

Connector Inspection 

P.00E-2

. Then go to Step 20.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

03DB191A

B-20 HARNESS 

CONNECTOR 

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MPI)

13A-377

STEP 8. Check harness connector B-20 at ECU for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 9.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 20.

STEP 9. Check for short circuit to ground between 
camshaft position sensor connector B-106 (terminal No. 2) 
and ECU connector B-20 (terminal No. 38).
Q: Is the harness wire in good condition?

YES : Then go to Step 10.
NO :  Repair it. Then go to Step 20.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

1

2

3

AK303130

HARNESS 

CONNECTOR: 

COMPONENT SIDE

AB

CAMSHAFT POSITION 

SENSOR

B-106 (B)

CONNECTOR: B-106

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MPI)

13A-378

STEP 10. Measure the power supply voltage at camshaft 
position sensor connector B-106.
(1) Disconnect the connector B-106 and measure at the 

harness side.

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

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

• Voltage should be approximately 4.9 - 5.1 volts.

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

Q: Is the voltage approximately between 4.9 - 5.1volts?

YES : Go to Step 12.
NO :  Go to Step 11.

STEP 11. Check ECU harness connector B-20 for damage.
Q: Is the harness connector in good condition?

YES : Repair harness wire between ECU connector B-20 

(terminal No. 25) and camshaft position sensor 
connector B-106 (terminal No. 01) because of open 
circuit or short circuit to ground. Then go to Step 20.

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

Connector Inspection 

P.00E-2

. Then go to Step 20.

1

2

3

AK303130

HARNESS 

CONNECTOR: 

COMPONENT SIDE

AB

CAMSHAFT POSITION 

SENSOR

B-106 (B)

CONNECTOR: B-106

AK303134

B-106 HARNESS 

CONNECTOR: 

COMPONENT SIDE

3 2 1

AB

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MPI)

13A-379

STEP 12. Check the continuity at camshaft position sensor 
connector B-106.
(1) Disconnect the connector B-106 and measure at the 

harness side.

(2) Check for the continuity between terminal No. 03 and 

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 15.
NO :  Go to Step 13.

STEP 13. Check harness connector B-20 at ECU 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 go to Step 20.

1

2

3

AK303130

HARNESS 

CONNECTOR: 

COMPONENT SIDE

AB

CAMSHAFT POSITION 

SENSOR

B-106 (B)

CONNECTOR: B-106

03DB192A

B-106 HARNESS

CONNECTOR: 

COMPONENT SIDE

1

2

3

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

 

 

 

 

 

 

 

Content   ..  569  570  571  572   ..