Mitsubishi 380. Manual — part 513

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-144

STEP 8. Check harness connector B-20 at ENGINE-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 13.

STEP 9. Check for open circuit between engine coolant
sensor connector B-104 (terminal No. 2) and ENGINE-ECU
connector B-20 (terminal No. 12).
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO : Repair it. Then go to Step 13.

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

1

2

AK303037

HARNESS

CONNECTOR:

COMPONENT SIDE

CONNECTOR: B-104

AB

B-104 (B)

THROTTLE

BODY

16DB400A

COVER

ENGINE

CONTROL

UNIT

AIR

CLEANER

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-145

STEP 10. Check the engine coolant temperature sensor(On
Car).
(1) Ensure engine coolant temperature is between 20

° C and

below 100

° C.

(2) Disconnect the engine coolant temperature sensor

connector B-104.

(3) Check the resistance between terminal No. 1 & No. 2 of the

sensor.

Q: Is the measured resistance between 186

Ω and 2.4 kΩ?

YES : Go to Step 11.
NO : Replace the sensor and go to Step 13.

STEP 11. Check the engine coolant temperature sensor(Off
Car).
(1) Disconnect the engine coolant temperature sensor

connector B-104.

(2) Remove the engine coolant temperature sensor.

(3) With the temperature sensing portion of engine coolant

temperature sensor immersed in hot water, measure
resistance.Refer to Service Specifications

13A-677

(4) Apply 3M

™ AAD part number 8731 or equivalent on the

screw section of the engine coolant temperature sensor.

(5) Install the engine coolant temperature sensor, and tighten

to the specified torque.

Tightening torque: 21

± 3 N⋅m

Q: Is the measured resistance at the standard value?

YES : Go to Step 12.
NO : Replace the engine coolant sensor. Then go to Step

13.

1

2

AK303037

HARNESS

CONNECTOR:

COMPONENT SIDE

CONNECTOR: B-104

AB

B-104 (B)

THROTTLE

BODY

1

2

AK303037

HARNESS

CONNECTOR:

COMPONENT SIDE

CONNECTOR: B-104

AB

B-104 (B)

THROTTLE

BODY

AKX01622

AKX01623 AB

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-146

STEP 12. Using diagnostic tool , check data list item 6:
Engine Coolant Temperature Sensor.

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) Connect diagnostic tool to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set diagnostic tool to the data reading mode for item 6,

Engine Coolant Temperature Sensor.

• The engine coolant temperature and temperature

shown with the diagnostic tool should approximately
match.

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

Q: Is the sensor operating properly?

YES : The inspection is complete.
NO : Then go to Step 13.

STEP 13. Test the EOBD drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

Diagnostic Function

− EOBD Drive Cycle −

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).

Q: Is DTC P0118 set?

YES : Retry the troubleshooting.
NO : The inspection is complete.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPOINT FUEL INJECTION (MPI) DIAGNOSIS

MULTIPOINT FUEL INJECTION (MPI)

13A-147

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