Mitsubishi 380. Manual — part 564

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-348

STEP 2. Check the continuity at knock sensor harness
side connector B-120.
(1) Disconnect the connector B-120 and measure at the

harness side.

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

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 3.
NO : Repair an open circuit or harness damage between

knock sensor connector B-120 (terminal No. 2) and
ground. Then go to Step 8.

STEP 3. Check harness connector B-20 at ECU for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 8.

AK303120

1

2

KNOCK SENSOR

AB

CONNECTOR: B-120

B-120 (GR)

HARNESS

CONNECTOR:

COMPONENT SIDE

AK303121 AB

B-120 HARNESS
CONNECTOR:
COMPONENT SIDE

1

2

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-349

STEP 4. Check for open circuit and harness damage
between knock sensor connector B-120 (terminal No. 2)
and ECU connector B-20 (terminal No. 13).
Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO : Repair it. Then go to Step 8.

AK303120

1

2

KNOCK SENSOR

AB

CONNECTOR: B-120

B-120 (GR)

HARNESS

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-350

STEP 5. Check harness connector B-20 at ECU for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 8.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

MULTIPORT FUEL INJECTION (MFI)

13A-351

STEP 6. Check for open circuit, short circuit to ground and
harness damage between knock sensor connector B-120
(terminal No. 1) and ECU connector B-20 (terminal No. 28).
Q: Is the harness wire in good condition?

YES : Go to Step 7.
NO : Repair it. Then go to Step 8.

AK303120

1

2

KNOCK SENSOR

AB

CONNECTOR: B-120

B-120 (GR)

HARNESS

CONNECTOR:

COMPONENT SIDE

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER