Mitsubishi Lancer Evolution IX. Manual - part 664

13B-1

GROUP 13B

FUEL SUPPLY

CONTENTS

GENERAL INFORMATION . . . . . . . .

13B-2

ON-VEHICLE SERVICE. . . . . . . . . . .

13B-2

FUEL PUMP OPERATION CHECK . . . . . . 

13B-2

FUEL PUMP MODULE REPLACEMENT . . 

13B-2

FUEL GAUGE UNIT CHECK  . . . . . . . . . . . 

13B-3

FUEL GAUGE UNIT REPLACEMENT  . . . . 

13B-3

FUEL TANK  . . . . . . . . . . . . . . . . . . . .

13B-5

REMOVAL AND INSTALLATION  . . . . . . . . 

13B-5

FUEL PUMP MODULE DISASSEMBLY AND 
REASSEMBLY  . . . . . . . . . . . . . . . . . . . . . . 

13B-9

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 

13B-11

GENERAL INFORMATION

FUEL SUPPLY

13B-2

GENERAL INFORMATION

M1135000100480

• The fuel tank is located under the floor of the rear 

seats to provide increased protection and more 
luggage space.

• A fuel tank safety valve is used to prevent fuel 

from leaking out in case of a collision.

• A fuel pump module, including fuel pump, fuel fil-

ter assembly and fuel gauge unit (main), is uti-
lized to reduce weight and improve serviceability.

ON-VEHICLE SERVICE

FUEL PUMP OPERATION CHECK

M1135001000204

Refer to GROUP 13A, On-vehicle Service 

P.13A-399

.

FUEL PUMP MODULE REPLACEMENT

M1135004900369

1. Remove the rear seat cushion assembly. (Refer to 

GROUP 52A, Rear Seat Assembly 

P.52A-20

).

2. Remove the service hole cover.

AC210801AB

Suction
hose

Fuel high-
pressure hose

Harness
connector

Fuel return
hose

3. Disconnect the harness connector.

NOTE:  Check the fuel pump (Refer to GROUP 
13A, On-vehicle Service 

P.13A-399

). If defective, 

replace the fuel pump, which is incorporated in 
the fuel pump module.

4. Disconnect fuel high-pressure hose, suction hose 

and fuel return hose.

AC211368

Float

Fuel pump
module

AB

CAUTION

When withdrawing the fuel pump module from 
the fuel tank, be careful not damage the module 
unit and the float.
5. Unscrew the mounting nuts to remove the fuel 

pump module.

6. Replace the fuel pump (Refer to 

P.13B-9

).

AC211368

Float

Fuel pump
module

AB

CAUTION

When installing the fuel pump module into the 
fuel tank, be careful not damage the module unit 
and the float.
7. Install the fuel pump module. Tighten the 

mounting nuts to the specified torque.

Tightening torque: 2.5 

± 0.5 N⋅m

AC100963 AC

Fuel
high-pressure
hose

Corresponding
side

3.0 mm

ON-VEHICLE SERVICE

FUEL SUPPLY

13B-3

CAUTION

Snap the fuel high-pressure hose one-touch joint 
into place, then pull back slightly on the hose to 
assure it is secure. However, the connection 
should have a play of approximately 3.0 mm.
8. Connect the harness connector, fuel 

high-pressure hose, suction hose and fuel return 
hose.

9. Replace the service hole cover.
10.Install the rear seat cushion assembly (Refer to 

GROUP 52A, Rear Seat Assembly 

P.52A-20

).

FUEL GAUGE UNIT CHECK

M1135003100401

Refer to GROUP 54A, Combination Meter Assembly 
and Vehicle Speed Sensor 

− On-vehicle Service 

P.54A-54

.

FUEL GAUGE UNIT REPLACEMENT

M1135001400428

1. Remove the rear seat cushion assembly. (Refer to 

GROUP 52A, Rear Seat Assembly 

P.52A-20

).

2. Remove the service hole cover.

Y2014AU

AC310596

AC310872AB

Suction
hose

Fuel high-
pressure hose

Fuel return
hose

Suction
hose

<Fuel gauge unit (Sub)>

<Fuel gauge unit (Main)>

Fuel pump
module

Fuel pipe and
gauge assembly

Harness
connector

Harness
connector

3. Disconnect the harness connector, fuel 

high-pressure hose, suction hose and fuel return 
hose.

AC310597

Float

Fuel pump
module

AB

Float

Fuel pipe
and gauge
assembly

CAUTION

When withdrawing the fuel pump module or fuel 
pipe and gauge assembly from the fuel tank, be 
careful not damage the sensor unit and the float.

ON-VEHICLE SERVICE

FUEL SUPPLY

13B-4

4. Unscrew the mounting nuts to remove the fuel 

pump module or fuel pipe and gauge assembly.
NOTE:  Check the fuel gauge unit (Refer to 
GROUP 54A, Combination Meter Assembly and 
Vehicle Speed Sensor 

−

 On-vehicle Service 

P.54A-54

). If defective, replace it. (Refer to 

P.13B-9

).

AC310597

Float

Fuel pump
module

AB

Float

Fuel pipe
and gauge
assembly

CAUTION

When inserting the fuel pump module or fuel pipe 
and gauge assembly into the fuel tank, be careful 
not damage the sensor unit and the float.
5. Install the fuel pump module or fuel pipe and 

gauge assembly. Tighten the mounting nuts to the 
specified torque.

Tightening torque: 2.5 

± 0.5 N⋅m

AC100963 AC

Fuel
high-pressure
hose

Corresponding
side

3.0 mm

CAUTION

Snap the fuel high-pressure hose one-touch joint 
into place, then pull back slightly on the hose to 
assure it is secure. However, the connection 
should have a play of approximately 3.0 mm.
6. Connect the harness connector, fuel 

high-pressure hose, suction hose and fuel return 
hose.

7. Replace the service hole cover.
8. Install the rear seat cushion assembly. (Refer to 

GROUP 52A, Rear Seat Assembly 

P.52A-20

).