Mitsubishi Eclipse. Manual — part 260

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-533

STEP 19. Check connectors D-16 at intermediate
connector and D-18 at fuel tank differential pressure
sensor for damage.
Q: Are the connectors in good condition?

YES : Go to Step 20.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 22.

STEP 20. Check the harness wire between intermediate
connector D-16 terminal 5 and fuel tank differential
pressure sensor connector D-18 terminal 1 for damage.
Q: Is the harness wire in good condition?

YES : Go to Step 22.
NO : Repair it. Then go to 22.

AC001787AD

CONNECTOR: D-16

AC103356

FUEL TANK

AD

CONNECTOR: D-18
FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

AC001787AD

CONNECTOR: D-16

AC103356

FUEL TANK

AD

CONNECTOR: D-18
FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L>

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STEP 21. Using scan tool MB991958, check data list item
73: Fuel Tank Differential Pressure Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.

(2) Disconnect hose G from the evaporative emission canister

side, and plug the hose from which the pipes have been
disconnected.

(3) Turn the ignition switch to the "ON" position.
(4) Remove the fuel cap.
(5) Set scan tool MB991958 to the data reading mode for item

73, Fuel Tank Differential Pressure Sensor.

• The fuel tank pressures should be −1.5 to 1.5 kPa

(

−0.443 to 0.443 inHg.)

(6) Connect an evaporative emission system pressure pump to

the fuel filler neck, and apply pressure.

• The scan tool reading should increase.

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

disconnect scan tool MB991958.

Q: Is the scan tool reading within the specified value?

YES : This malfunction is intermittent malfunction. Refer to

GROUP 00, How to Use Troubleshooting/Inspection
Service Points

P.00-6

. Then go to Step 22.

NO : Replace the ECM <M/T> or PCM <A/T>. Then go to

Step 22.

AC303127

AB

MB991911

16-PIN

MB991827

MB991824

AC002036 AC

HOSE G

AC000186

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L>

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STEP 22. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern (Refer to

Diagnostic Function

− OBD-ll Drive Cycle − Procedure 1 −

Evaporative Emission System Leak Monitor

P.13A-5

).

(2) Read the diagnostic trouble code.
Q: Is diagnostic trouble code P0451 set?

YES : Go to Step 2.
NO : This diagnosis is complete.

DTC P0452: Evaporative Emission Control System Pressure Sensor Low Input

AC001943

A

B

C

EVAPORATIVE EMISSION
PURGE SOLENOID

EVAPORATIVE
EMISSION CANISTER

EVAPORATIVE
EMISSION
VENTILATION
SOLENOID

FUEL TANK

CHECK VALVE A

CHECK
VALVE B

INTAKE MANIFOLD

SYSTEM DIAGRAM

D

E

F

G

I

H

L

N

M

K

J

O

P

CHAMBER

AC

FUEL TANK DIFFRENTIAL
PRESSURE SENSOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-536

Fuel Tank Differential Pressure Sensor Circuit