Mitsubishi 380. Manual - part 766

 

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Mitsubishi 380. Manual - part 766

 

 

FUEL SUPPLY DIAGNOSIS

FUEL SUPPLY

13B-4

STEP 2. Check the fuel pressure.
Release residual pressure from the fuel line to prevent fuel 
spray. Refer to Fuel Pressure Test. 

P.13A-661

 .

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.

P.13A-664

 .

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

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

P.13B-8

). 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.13B-8

).

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.

AC307454AB

FUEL PIPE

FUEL
HOSE

SPECIAL TOOLS

FUEL SUPPLY

13B-5

SPECIAL TOOLS

M1135000600300

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

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.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

ON-VEHICLE SERVICE

FUEL SUPPLY

13B-6

ON-VEHICLE SERVICE

FUEL LEVEL SENSOR CHECK

M1135005300069

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

P.54A-95

.

FUEL PUMP OPERATION CHECK

M1135001000152

: Refer to GROUP 13B - On-vehicle Service, Fuel Pump Oper-
ation Check 

P.13A-664

.

FUEL PUMP MODULE REPLACEMENT

M1135004900314

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

52A, Rear Seat Assembly 

P.52A-55

.)

2. Remove the hole cover (LH).

3. Disconnect the fuel pump module connector and fuel 

high-pressure hose.

CAUTION

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

pump module from the fuel tank.

03DB150A

HOLE COVER

AC306090

FUEL PUMP MODULE 
CONNECTOR

FUEL HIGH-
PRESSURE HOSE

AB

AC307207

FUEL PUMP 
MODULE

FLOAT

AB

ON-VEHICLE SERVICE

FUEL SUPPLY

13B-7

CAUTION

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

5. Connect the suction hose to the fuel pump module, and 

install the fuel pump module to the fuel tank whilst ensuring 
that the suction hose is not kinked.

6. Install the plate to the fuel tank.

7. Connect the fuel pump module connector and fuel 

high-pressure hose.

8. Install the hole cover (LH).

Tightening torque: 1.5 

± 0.5 Nm (14 ± 4 in-lb)

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

52A, Rear Seat Assembly 

P.52A-55

.)

AC307207

FUEL PUMP 
MODULE

FLOAT

AB

AC306092AB

SUCTION HOSE

FUEL PUMP 
MODULE

MATING MARKS

AC306090

FUEL PUMP MODULE 
CONNECTOR

FUEL HIGH-
PRESSURE HOSE

AB

03DB150A

HOLE COVER

 

 

 

 

 

 

 

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