Mitsubishi Eclipse. Manual - part 268

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-565

STEP 12. Check connectors C-28, C-90, D-16 at 
intermediate connector and C-60 at ECM <M/T> or C-54 at 
PCM <A/T> for damage.
Q: Are the connectors in good condition?

YES : Go to Step 13.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 22.

AC001741 AJ

CONNECTOR: C-28

AC001991

CONNECTOR: C-90

CONNECTOR
BLOCK (LH)

AI

AC001787AD

CONNECTOR: D-16

AC001689

CONNECTOR: C-60 <M/T>, C-54 <A/T>

ECM <M/T>
OR
PCM <A/T>

AL

C-54 
<A/T>

C-60 
<M/T>

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-566

STEP 13. Check the harness wire between ECM connector 
C-60 terminal 92 <M/T> or PCM connector C-54 terminal 57 
<A/T> and intermediate connector D-16 terminal 6 for 
damage.
Q: Is the harness wire in good condition?

YES : Go to Step 14.
NO :  Repair it. Then go to 22.

STEP 14. Check the ground voltage at ECM connector C-60 
<M/T> or PCM connector C-54 <A/T> by backprobing.
(1) Do not disconnect ECM connector C-60 <M/T> or PCM 

connector C-54 <A/T>.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 92 <M/T> or terminal 

57 <A/T> and ground by backprobing.

• The voltage should be 0.5 volt or less.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?

YES : Go to Step 18.
NO :  Go to Step 21.

AC001689

CONNECTOR: C-60 <M/T>, C-54 <A/T>

ECM <M/T>
OR
PCM <A/T>

AL

C-54 
<A/T>

C-60 
<M/T>

AC001787AD

CONNECTOR: D-16

AC002554 AC

<M/T> C-60

<A/T> C-54

HARNESS SIDE 
CONNECTOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-567

STEP 15. 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 16.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 22.

STEP 16. Check the harness wire between intermediate 
connector D-16 terminal 8 and fuel tank differential 
pressure sensor connector D-18 terminal 3 for damage.
Q: Is the harness wire in good condition?

YES : Go to Step 17.
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

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-568

STEP 17. Check the harness wire between intermediate 
connector D-16 terminal 6 and fuel tank differential 
pressure sensor connector D-18 terminal 2 for damage.
Q: Is the harness wire in good condition?

YES : Replace the fuel tank differential pressure sensor. 

Then go to 22.

NO :  Repair it. Then go to 22.

STEP 18. Check the output circuit voltage at fuel tank 
differential pressure sensor connector D-18. 
(1) Remove the center exhaust pipe. (Refer to GROUP 15, 

Exhaust Pipe, Main Muffler and Catalytic Converter 

P.15-22

.)

(2) Remove the fuel band assembly, tilt the fuel tank.
(3) Disconnect fuel tank differential pressure sensor connector 

D-18.

(4) Use special tool (MB991658) to connect terminals 1, 2 and 

3 of the disconnected sensor connector and those of the 
harness side connector respectively.

(5) Turn the ignition switch to the "ON" position.
(6) Remove the fuel cap.
(7) Measure the voltage between terminal 1 and ground.

• Voltage should be between 2.0 and 3.0 volts.

(8) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?

YES : Remove the special tool and connect fuel tank 

differential pressure sensor connector D-18. Then go 
to Step 19.

NO :  Replace the fuel tank differential pressure sensor. 

Then go to 22.

AC001787AD

CONNECTOR: D-16

AC103356

FUEL TANK

AD

CONNECTOR: D-18
FUEL TANK DIFFERENTIAL 
PRESSURE SENSOR

AC002081AB

MB991658

FUEL TANK DIFFERENTIAL 
PRESSURE SENSOR