Mitsubishi Galant 9G. Manual — part 1394

FUEL SUPPLY DIAGNOSIS

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FUEL SUPPLY

13C-4

STEP 2. Check the fuel pressure.
Release residual pressure from the fuel line to prevent fuel
spray. Refer to Fuel Pressure Test. <2.4L Engine>

P.13A-1124

,<3.8L Engine>

P.13B-1179

.

Q: Is the fuel pressure in good condition?

YES : Go to Step 5.
NO : Repair or replace. Then go to Step 3.

STEP 3. Check for bending, twisting or clogging of the fuel
pipe or hose.
Q: Are the fuel pipe and hose in good condition?

YES : Go to Step 4.
NO : Repair or replace. Then go to Step 6.

STEP 4. Check the fuel pump module operation.
Refer to Fuel Pump Operation Check. <2.4L
Engine>

P.13A-1128

,<3.8L Engine>

P.13B-1181

.

Q: Is the fuel pump module operation in good condition?

YES : Then go to Step 5.
NO : Replace (Refer to

P.13C-10

). Then go to Step 6.

STEP 5. Check the inside of the fuel tank for contamination
and rust.
(1) Drain fuel.
(2) Remove the fuel tank (Refer to

P.13C-10

).

Q: Is the fuel tank in good condition?

YES : Go to Step 6.
NO : Replace the fuel filter, and clean the fuel tank and fuel

line. Then go to Step 6.

STEP 6. Retest the system.
Q: Is the engine malfunction eliminated?

YES : The procedure is complete.
NO : Return to Step 1.

AC307454 AB

FUEL PIPE

FUEL
HOSE

SPECIAL TOOLS

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FUEL SUPPLY

13C-5

SPECIAL TOOLS

M1135000600300

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III sub assembly

A: Vehicle

communication
interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main harness

A (Vehicles with CAN
communication
system)

D: MUT-III main harness

B (Vehicles without
CAN communication
system)

E: MUT-III main harness

C (for Daimler Chrysler
models only)

F: MUT-III measurement

adapter

G: MUT-III trigger

harness

MB991824-KIT
NOTE: G:
MB991826 MUT-III
Trigger Harness is
not necessary
when pushing
V.C.I. ENTER key.

Checking diagnostic trouble
codes

CAUTION

For vehicles with CAN
communication, use MUT-III
main harness A to send
simulated vehicle speed. If
you connect MUT-III main
harness B instead, the CAN
communication does not
function correctly.

MB991658
Test harness set

Tool not available

Fuel tank differential pressure
sensor check

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

MB991658

ON-VEHICLE SERVICE

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FUEL SUPPLY

13C-6

ON-VEHICLE SERVICE

FUEL LEVEL SENSOR CHECK

M1135005300069

Refer to GROUP 54A - Combination Meter, On-vehicle Service,
Fuel Level Sensor Check

P.54A-104

.

FUEL LEVEL SENSOR REPLACEMENT

M1135005600026

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

52A, Rear Seat Assembly

P.52A-29

.)

2. Remove the hole cover (RH).

3. Disconnect the fuel level sensor (sub) connector and fuel

tank differential pressure sensor connector.

CAUTION

When withdrawing the fuel level sensor (sub) from the fuel
tank, be careful not damage the sensor unit and the float.
4. Remove the fuel level sensor (sub) mounting bolts and

remove the fuel tank gauge unit from service hole.

CAUTION

When inserting the fuel level sensor (sub) into the fuel
tank, be careful not damage the sensor unit and the float.
5. Install the fuel level sensor to the fuel tank through the

service hole.

AC306089

HOLE COVER

AB

AC306093

FUEL LEVEL SENSOR
(SUB) CONNECTOR

FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

AB

AC307206AB

FLOAT

FUEL LEVEL
SENSOR (SUB)

AC307206AB

FLOAT

FUEL LEVEL
SENSOR (SUB)

ON-VEHICLE SERVICE

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FUEL SUPPLY

13C-7

6. Connect the fuel level sensor (sub) connector and fuel tank

differential pressure sensor connector.

7. Install the hole cover (RH).

Tightening torque: 1.5

± 0.5 N⋅m (14 ± 4 in-lb)

8. Install the rear seat cushion assembly. (Refer to GROUP

52A, Rear Seat Assembly

P.52A-29

.)

FUEL PUMP OPERATION CHECK

M1135001000152

<2.4L Engine>: Refer to GROUP 13A - On-vehicle Service,
Fuel Pump Operation Check

P.13A-1128

.

<3.8L Engine>: Refer to GROUP 13B - On-vehicle Service,
Fuel Pump Operation Check

P.13B-1181

.

FUEL PUMP MODULE REPLACEMENT

M1135004900314

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

52A, Rear Seat Assembly

P.52A-29

.)

2. Remove the hole cover (LH).

AC306093

FUEL LEVEL SENSOR
(SUB) CONNECTOR

FUEL TANK DIFFERENTIAL
PRESSURE SENSOR

AB

AC306089

1.5 ± 0.5 N·m
14 ± 4 in-lb

HOLE COVER

AC

AC306089AD

HOLE COVER