Mitsubishi Outlander XL. Manual — part 421

GROUP 13B

FUEL SUPPLY

CONTENTS

GENERAL INFORMATION. . .

13B-2

SERVICE SPECIFICATION. . ..

13B-3

FUEL SUPPLY DIAGNOSIS. . ..

13B-3

INTRODUCTION. . . . ...

13B-3

TROUBLESHOOTING STRATEGY. ...

13B-3

SYMPTOM PROCEDURES. . . .

13B-4

SPECIAL TOOLS. . . . ..

13B-6

ON-VEHICLE SERVICE. . . .

13B-7

FUEL PUMP OPERATION CHECK. ..

13B-7

FUEL LEVEL SENSOR CHECK. ....

13B-7

FUEL PUMP MODULE REPLACEMENT <FWD>
. . . . . . . ...

13B-7

FUEL PUMP MODULE REPLACEMENT <AWD>
. . . . . . . ...

13B-9

FUEL LEVEL SENSOR (SUB) REPLACEMENT
<AWD>. . . . . . .

13B-12

FUEL TANK. . . . . .

13B-13

REMOVAL AND INSTALLATION <FWD>
. . . . . . . ..

13B-13

REMOVAL AND INSTALLATION <AWD>
. . . . . . . ..

13B-18

INSPECTION. . . . .

13B-25

13B-1

GENERAL INFORMATION

M11305000001USA0000010000

This fuel system is designed with consideration for
global environment protection to ensure safety at a
collision, reduce weight, and improve reliability and
quality. This system has the following features:

｠

A quick-joint connector is used for the fuel high-
pressure hoses in the engine compartment to
reduce the permeation of fuel evaporative emission.

｠

The surface of underfloor fuel pipes is coated with
1 mm (0.04 inch) thick resin to improve resistance
to corrosion and chipping.

｠

A returnless fuel system eliminates returned fuel
from the engine. The heat that fuel receives from
the engine is reduced, minimizing fuel temperature
in the fuel tank and controlling the amount of
evaporated gas.

CONSTRUCTION DIAGRAM

ZC600632

Fuel injector

Fuel rail

Fuel pipe

Fuel pump module

Evaporative
emission
canister

0000

Fuel tank

<FWD>

13B-2

FUEL SUPPLY

GENERAL INFORMATION

ZC600633

Fuel injector

Fuel rail

Fuel pipe

Fuel pump module

Evaporative
emission
canister

0000

Fuel tank

Fuel level sensor (sub)

<AWD>

SERVICE SPECIFICATION

M11305000003USA0000010000

Item

Standard value

Fuel tank differential pressure sensor output voltage V

2.0 - 3.0

FUEL SUPPLY DIAGNOSIS

INTRODUCTION

M11305000040USA0000010000

The fuel system is used to supply an appropriate fuel
mixture to the engine. The system consists of the fuel
tank, fuel filter, fuel pump and fuel pipes. An
evaporative emission system is provided to prevent
evaporated fuel from escaping into the atmosphere.

Engine malfunctions caused by insufficient fuel supply
and evaporative emission system operation
malfunctions can be caused by faults in the vapor line,
fuel pipe, hose, or fuel tank pressure control valve,
etc.

TROUBLESHOOTING STRATEGY

M11305000041USA0000010000

Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure to find most
of the fuel supply faults.

1.

Gather information from the customer.

2.

Verify that the condition described by the customer
exists.

3.

Find the malfunction by following the Symptom
Procedure.

4.

Verify malfunction is eliminated.

FUEL SUPPLY

13B-3

SERVICE SPECIFICATION

SYMPTOM PROCEDURES

M11305000048USA0000010000

Inspection Procedure 1 : Engine Malfunctions Due to Insufficient Fuel Supply

TROUBLESHOOTING HINTS (The most likely causes for this
case:)

｠

Fuel injector failed.

｠

Open or shorted fuel injector circuit, or loose connector.

｠

Bent, twisted or clogged fuel main pipe or fuel high-pressure
tube.

｠

Malfunction of the fuel pump module.

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: M.U.T.-III USB Cable

｠

MB991910: M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, read the MFI system
diagnostic trouble code.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Ensure that the ignition switch is at the "LOCK" (OFF)
position.

(2)

Start up the personal computer.

(3)

Connect special tool MB991827 to special tool MB991824
and the personal computer.

(4)

Connect special tool MB991910 to special tool MB991824.

(5)

Connect special tool MB991910 to the data link connector.

(6)

Turn the power switch of special tool MB991824 to the "ON"
position.

NOTE:

When special tool MB991824 is energized, special

tool MB991824 indicator light will be illuminated in a
green color.

(7)

Start the M.U.T.-III system on the personal computer.

(8)

Turn the ignition switch to the "ON" position.

(9)

Check for MFI system diagnostic trouble code (Refer to
GROUP 13Ab, Diagnostic Function - How to Read and Erase
Diagnostic Trouble Codes P.13Ab-8).

(10)

Turn the ignition switch to the "LOCK" (OFF) position, and
then remove scan tool MB991958 in the reverse order of
installation.

Q:Is the DTC set?

13B-4

FUEL SUPPLY

FUEL SUPPLY DIAGNOSIS