Mitsubishi Lancer Evolution X. Manual - part 455

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-885

>>D<< FUEL INJECTOR SUPPORT 
INSTALLATION

Install the fuel injector support to the fuel injector groove and 
fuel rail brim, and fix the fuel injector assembly and fuel rail.

.

>>E<< FUEL HIGH-PRESSURE HOSE 
CONNECTION

CAUTION

• When pushing in the retainer of the fuel high-pressure 

hose connector, pay attention to avoid damage to the 
retainer.

• After the installation of the fuel high-pressure hose, 

slightly pull the fuel high-pressure hose to check that it 
is connected securely. At this time, also check that 
there is approximately 1 mm (0.04inch) play.

1. Securely insert the fuel rail stopper into the fuel 

high-pressure hose connector groove to install the fuel 
high-pressure hose to the fuel rail.

2. Push in the retainer of the fuel high-pressure hose 

connector to lock the fuel high-pressure hose and fuel rail.

AC312109

AC

Fuel rail brim

Fuel injector
support

Fuel injector
groove

AC506794 AB

Fuel high-pressure
hose

Fuel rail

Retainer

Stopper

THROTTLE BODY ASSEMBLY

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-886

THROTTLE BODY ASSEMBLY

REMOVAL AND INSTALLATION

M1131007702603

CAUTION

• When the throttle body assembly is replaced, initialize the learned value using scan tool (Refer to 

GROUP 00, Precautions before Service − Initialization Procedure for Learning Value in MFI Engine 

P.00-34

).

• Never loosen the screw fixing the throttle body assembly resin cover. If the screw is loosened, the 

sensor incorporated in the resin cover is misaligned and the throttle body assembly does not 

work normally.

Pre-removal operation
• Engine Coolant Draining (Refer to GROUP 14, On-vehicle 

Service − Engine Coolant Replacement 

P.14-18

).

• Air Cleaner Body Removal (Refer to GROUP 15, Air 

Cleaner 

P.15-12

).

• Charge Air Cooler Outlet Hose E Removal (Refer to 

GROUP 15, Charge Air Cooler 

P.15-12

).

Post-installation operation
• Charge Air Cooler Outlet Hose E Installation (Refer to 

GROUP 15, Charge Air Cooler 

P.15-12

).

• Air Cleaner Body Installation (Refer to GROUP 15, Air 

Cleaner 

P.15-12

).

• Engine Coolant Refilling (Refer to GROUP 14, On-vehicle 

Service − Engine Coolant Replacement 

P.14-18

).

AC704284

1

2

3

4

5

6

7

8

23 ± 6 N·m
17 ± 4 ft-lb

N

AC

Removal steps 

>>B<<

•

Initialization operation (only at 
installation)

1.

Electronic-controlled throttle valve 
connector connection

2.

Battery wiring harness clamp

3.

Cooling water line hose 
connection

4.

Cooling water line hose 
connection

5.

Harness bracket

6.

Harness bracket

7.

Throttle body assembly

>>A<<

8.

Throttle body gasket

Removal steps (Continued)

ENGINE CONTROL RESISTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-887

INSTALLATION SERVICE POINTS

.

>>A<< THROTTLE BODY GASKET INSTALLA-
TION

Install the throttle body gasket as its projection is in the direc-
tion shown.

.

>>B<< INITIALIZATION OPERATION

Turn the ignition switch to the "ON" and then to "LOCK" (OFF) 
position and hold it for at least 10 seconds.

ENGINE CONTROL RESISTOR

REMOVAL AND INSTALLATION

M1131026000027

AC704936AC

Projection

AC704791

4.5 ± 1.5 N·m
40 ± 13 in-lb

4.5 ± 1.5 N·m
40 ± 13 in-lb

2.5 ± 0.5 N·m
23 ± 4 in-lb

1

2

3

AC

Radiator condenser tank

Removal steps 

1.

Fuel pump resistor connector 
connection

2.

Fuel pump resistor

3.

Relay bracket

Removal steps (Continued)

ENGINE CONTROL MODULE (ECM)

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MULTIPORT FUEL INJECTION (MFI)

13A-888

ENGINE CONTROL MODULE (ECM)

REMOVAL AND INSTALLATION

M1131033801772

CAUTION

• When replacing the engine control module (ECM), do not replace the immobilizer-ECU (WCM) or 

KOS-ECU at the same time with ECM. When replacing multiple ECUs, always replace only one 
ECU at a time and complete necessary ID registration using the scan tool. (Refer to GROUP 42B − 

Diagnosis, ID Code Registration Judgment Table 

P.42B-14

.) <Vehicles with KOS> (Refer to GROUP 

42C − Diagnosis, ID Code Registration Judgment Table 

P.42C-10

.) <Vehicles with WCM>

• After the engine control module (ECM) replacement, idling speed may be unstable because the 

MFI engine learning is not completed. To make it stable, let the system learn the idling. (Refer to 
GROUP 00, Precautions Before Service − Learning Procedure for Idling in MFI Engine 

P.00-35

.)

• After the engine control module (ECM) replacement, register a key code using the scan tool (Refer 

to GROUP 00 − Precautions Before Service, How to Perform Vehicle Identification Number (VIN) 

Writing 

P.00-22

).

• When the engine control module (ECM) is replaced, save the vehicle identification number and 

perform the variant coding.

• When the engine control module (ECM) is replaced, the initial learning value of timing chain elon-

gation amount must be stored and written by using the scan tool (Refer to GROUP 00 − Precau-

tions Before Service, Timing Chain Maintenance 

P.00-36

).

Pre-removal and post-installation operation
• Air Cleaner Assembly Removal and Installation (Refer to 

GROUP 15, Air Cleaner 

P.15-12

).

AC901688

7.5 ± 1.5 N·m
67 ± 13 in-lb

7.5 ± 1.5 N·m
67 ± 13 in-lb

9.5 ± 3.5 N·m
84 ± 31 in-lb

4.0 ± 2.0 N·m
36 ± 17 in-lb

1

2

3

4

6

N

N

1

N

AC

5

7 8

<Bolt, washer assembled>
4.0 ± 2.0 N·m (36 ± 17 in-lb)
<Bolt, flange>
5.0 ± 2.0 N·m (44 ± 17 in-lb)