Mitsubishi 380. Manual - part 567

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-360

STEP 6. Measure the sensor supply voltage at crankshaft 
position sensor harness side connector B-119.
(1) Disconnect the connector B-119 and measure at the 

harness side.

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

(3) Measure the voltage between terminal No. 2 and ground.

• Voltage should be between 4.9 and 5.1 volts.

(4) 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 11.
NO :  Go to Step 7.

AK303123

1

2

3

CRANKSHAFT

POSITION

SENSOR

AB

CRANKSHAFT

SPROCKET

CONNECTOR: B-119

B-119 (B)

HARNESS

CONNECTOR:

COMPONENT SIDE

AK303125 AB

2 1

3

B-119 HERNESS 

CONNECTOR: 

COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-361

STEP 7. Measure the sensor supply voltage at ECU 
connector B-20 by using power plant ECU check harness 
special tool MB992044.
(1) Disconnect the all ECU connectors and connect power 

plant ECU check harness special tool MB992044 between 
the separated connectors.

(2) Disconnect the crankshaft position sensor connector B-119.
(3) Turn the ignition switch to the "ON" position.

(4) Measure the voltage between terminal No. 23 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 8.
NO :  Go to Step 9.

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

YES : Repair harness wire between crankshaft position 

sensor connector B-119 (terminal No. 2) and ECU 
connector B-20 (terminal No. 23) because of open 
circuit. Then go to Step 18.

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

Connector Inspection 

P.00E-2

. Then go to Step 18.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

03DB196A

B-20 HARNESS 

CONNECTOR 

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-362

STEP 9. Check harness connector B-20 at ECU for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 18.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-363

STEP 10. Check for short circuit to ground between 
crankshaft position sensor connector B-119 (terminal No. 
2) and ECU connector B-20 (terminal No. 23).
Q: Is the harness wire in good condition?

YES : Then go to Step 11.
NO :  Repair it. Then go to Step 18.

AK303123

1

2

3

CRANKSHAFT

POSITION

SENSOR

AB

CRANKSHAFT

SPROCKET

CONNECTOR: B-119

B-119 (B)

HARNESS

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER