Mitsubishi Galant 9G. Manual - part 923

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-1134

3. If the output voltage is not within the standard value, replace 

the heated oxygen sensor.

NOTE: For removal and installation of the heated oxygen sen-
sor, refer to GROUP 15, Exhaust Pipe and Main Muffler 

P.15-20

.

INJECTOR CHECK

M1131005200554

Measurement of Resistance between Terminals

1. Disconnect the injector connector.
2. Measure resistance between terminals.

Standard value: 10.5 

− 13.5 ohms [at 20°C (68°F)]

3. If not within specification, replace the injector.
4. Install the injector connector.

Checking operation sound

Using a stethoscope or long blade screwdriver, check the oper-
ation sound ("tick-tick-tick") of injectors during idling or during 
cranking. Check that as the engine speed increases, the fre-
quency of the operating sound also increases.
1. If the injector you are checking is not operating, you may 

hear the operating sound of the other injectors.

2. If no operating sound is heard from the injector that is being 

checked, check the injector drive circuit. If there is nothing 
wrong with the circuit, a defective injector or powertrain 
control module (PCM) is suspected.

THROTTLE ACTUATOR CONTROL MOTOR 
CHECK

M1131051000100

.

<Operation Inspection>

1. Disconnect the air intake hose from the throttle body.
2. Set the ignition switch to the "ON" position.
3. Operate the accelerator pedal and confirm that the throttle 

valve is opening and closing accordingly.

.

AK000602AB

1 2

AK000124 AB

STETHOSCOPE

ON-VEHICLE SERVICE

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-1135

<Checking the Terminal Resistance>

1. Disconnect the throttle position sensor connector.
2. Measure the resistance between terminal No. 1 and No. 2.

Standard value: 0.3 

− 80 ohms [at 20°C (68°F)]

3. If resistance is outside the standard value, replace the 

throttle body assembly.

ENGINE OIL CONTROL VALVE CHECK

M1131053200070

.

Checking the Operation Sound

1. Disconnect the engine oil control valve connector.

CAUTION

To prevent the coil from burning, keep the duration of the 
voltage application as short as possible.
2. Check that the operation sound of the engine oil control 

valve can be heard when the positive battery voltage is 
supplied to the engine oil control valve. (Use the jumper 
wires to connect terminal No. 2 of the engine oil control 
valve connector to the positive battery terminal and terminal 
No. 1 to the negative battery terminal.)

3. If the operation sound cannot be heard, replace the engine 

oil control valve.

.

Checking the Coil Resistance

1. Disconnect the engine oil control valve connector.
2. Measure resistance between terminal No. 1 and terminal 

No. 2 of the connector at the engine oil control valve side.

Standard value: 6.9 

− 7.9 ohms [at 20°C (68°F)]

3. If resistance is not within the standard value, replace the 

engine oil control valve.

EVAPORATIVE EMISSION PURGE SOLENOID 
CHECK

M1131005600273

Refer to GROUP 17, Emission Control System 

− Evaporative 

Emission Control System 

− Evaporative Emission Purge Sole-

noid Check 

P.17-87

.

6

1 2 3 4 5

AK202992

THROTTLE ACTUATOR
CONTROL MOTOR 
CONNECTOR

AB

AK302171 AB

ENGINE OIL 
CONTROL 
VALVE

MB991658

AK302152

1 2

AB

HARNESS CONNECTOR:
COMPONENT SIDE

INJECTOR

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-1136

EVAPORATVE EMISSION VENTILATION 
SOLENOID CHECK

M1131012800257

Refer to GROUP 17, Emission Control System 

− Evaporative 

Emission Canister and Fuel Tank Pressure Relief Valve 

− 

Evaporative Emission Canister and Fuel Tank Pressure Relief 
Valve Inspection 

P.17-96

.

EGR VALVE CHECK

M1131051500053

Refer to GROUP 17, Emission Control System 

− Exhaust Gas 

Recirculation (EGR) System 

− EGR Valve Check.

P.17-90

INJECTOR

REMOVAL AND INSTALLATION

M1131007100757

Pre-removal Operation
• Fuel Discharge Prevention (Refer to 

P.13A-1127

).

• Air Cleaner Cover and Air Intake Hose Removal (Refer to 

GROUP 15, Air Cleaner 

P.15-4

).

Post-installation Operation
• Air Cleaner Cover and Air Intake Hose Installation (Refer 

to GROUP 15, Air Cleaner 

P.15-4

).

• Fuel Leakage Inspection.

AC308302

3

2

4

5

6

7

8

9

10

15

16

13

14

17

20
18

19

12

11

N

N

5.0 ± 1.0 N·m
44 ± 9 in-lb

11 ± 1 N·m
98 ± 8 in-lb

11 ± 1 N·m
98 ± 8 in-lb

AB

1

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE 
INSTALLATION.

REMOVAL STEPS

1.

PCV HOSE CONNECTION

2.

IGNITION COIL CONNECTORS

3.

INJECTOR CONNECTORS

4.

EGR VALVE CONNECTOR

5.

ROCKER COVER BRACKET 

INSTALLATION BOLTS

6.

THROTTLE POSITION SENSOR 

CONNECTOR

7.

MANIFOLD ABSOLUTE PRESSURE 

SENSOR

8.

EVAPORATIVE EMISSION PURGE 

SOLENOID CONNECTOR

9.

KNOCK SENSOR CONNECTOR

10.

POWER STEERING PRESSURE 

SWITCH CONNECTOR

>>A<<

11.

FUEL HIGH-PRESSURE HOSE 

CONNECTION

12.

O-RING

<<A>>

13.

FUEL RAIL  AND INJECTOR 

ASSEMBLY

14.

INSULATORS

>>A<<

15.

INJECTOR ASSEMBLY

16.

FUEL RAIL

17.

O-RING

18.

INSULATORS

19.

GROMMETS

20.

INJECTORS

REMOVAL STEPS (Continued)

INJECTOR

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-1137

REMOVAL SERVICE POINT

.

<<A>> FUEL RAIL AND INJECTOR ASSEMBLY 
REMOVAL

CAUTION

Do not drop the injector.
Remove the fuel rail with the injectors attached to it.

INSTALLATION SERVICE POINT

.

>>A<< INJECTOR ASSEMBLY/FUEL HIGH-PRES-
SURE HOSE INSTALLATION

CAUTION

• Do not kink the fuel high-pressure hose as it is made of 

plastics.

• Do not let the engine oil get into the fuel rail.

1. Apply a drop of new engine oil to the O-ring.
2. Turn the injector to the right and left to install to the fuel rail. 

Repeat for fuel high-pressure hose. Be careful not to 
damage the O-ring. After installing, check that the item turns 
smoothly.

3. If it dose not turn smoothly, the O-ring may be trapped, 

remove the item, re-install it into the fuel rail and check 
again.

4. Tighten the fuel high-pressure hose to the specified torque.

Tightening torque: 5.0 

± 1.0 N⋅m (44 ± 9 in-lb)