Mitsubishi Montero Sport (2004+). Manual - part 371

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-897

INJECTOR CHECK

M1131005200491

Measurement of Resistance between Terminals

1. Disconnect the injector intermediate connector.

2. Measure the resistor between the injector intermediate male 

side connector terminals.

Standard value:

3. Connect the injector intermediate connector.

IDLE AIR CONTROL MOTOR CHECK

M1131005400569

Required Special Tool:

• MB991709: Test Harness Set

.

<Checking the Operation Sound>
1. Check that the engine coolant temperature is 20

°C (68°F) or 

below.
NOTE: If necessary, you can disconnect the engine coolant 
temperature sensor connector and connect the harness-side 
of the connector to another engine coolant temperature sen-
sor that is at 20

°

C (68

°

F) or below.

2. Check that the operation sound of the stepper motor can be 

heard after the ignition is switched ON (but do not start the 
engine).

3. If the operation sound cannot be heard, check the stepper 

motor's activation circuit. If the circuit is normal, it is 
probable that there is a malfunction of the stepper motor or 
powertrain control module.

.

AK000346AB

INJECTOR INTERMEDIATE
HARNESS CONNECTOR

INJECTOR NO.

MEASUREMENT 
TERMINAL

RESISTANCE

NO.1

8 

− 3

13 

− 16 ohms 

[20

°C (68°F)]

NO.2

8 

− 2

NO.3

8 

− 1

NO.4

8 

− 7

NO.5

8 

− 6

NO.6

8 

− 5

AKX01494

INJECTOR INTERMEDIATE
MALE SIDE CONNECTOR

1 2 3 4

5 6 7 8

AB

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-898

<Checking the Coil Resistance>
1. Disconnect the idle air control motor connector.
2. Measure resistance between terminal No. 2 and either 

terminal No. 1 or terminal No. 3 of the connector at the idle 
air control motor side.

Standard value: 28 

− 33 ohms [at 20°C (68°F)]

3. Measure the resistance between terminal No. 5 and either 

terminal No. 4 or terminal No. 6 of the connector at the idle 
air control motor side.

Standard value: 28 

− 33 ohms [at 20°C (68°F)]

4. If resistance is not within the standard value, replace the IAC 

motor.

.

<Operation Check>
1. Remove the throttle body.
2. Remove the idle air control motor.

3. Connect special tool MB991709 to the idle air control motor 

connector.

4. Connect the positive terminal of a power supply 

(approximately 6 volts) to terminal No. 2 and the terminal 
No. 5. 

5. Connect the negative terminal of the power supply to each 

clip as described in the following steps. Then check whether 
or not the stepper motor vibrates slightly as it operates.

(1) Connect the negative terminal of the power supply to 

terminal No. 1 and terminal No. 4.

(2) Connect the negative terminal of the power supply to 

terminal No. 3 and terminal No. 4.

(3) Connect the negative terminal of the power supply to 

terminal No. 3 and terminal No. 6.

(4) Connect the negative terminal of the power supply to 

terminal No. 1 and terminal No. 6.

(5) Connect the negative terminal of the power supply to 

terminal No. 1 and terminal No. 4.

(6) Repeat the tests in sequence from (5) to (1) to test 

opposite movement of the IAC.

AKX01561

1 2 3
4 5 6

1 2 3
4 5 6

AB

AKX01627AB

TERMINAL 2

IAC MOTOR

TERMINAL 5

MB991709

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-899

6. If vibration is detected during the test, the stepper motor can 

be considered to be normal.

EVAPORATIVE EMISSION PURGE SOLENOID 
CHECK

M1131005600228

Refer to GROUP 17, Emission Control System 

− Evaporative 

Emission System 

− Evaporative Emission Purge Solenoid 

Check 

P.17-109

.

EGR SOLENOID CHECK

M1131005700236

Refer to GROUP 17, Emission Control System 

− Exhaust Gas 

Recirculation (EGR) System 

− EGR Solenoid Check 

P.17-114

.

AKX01626 AB

INJECTOR

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-900

INJECTOR

REMOVAL AND INSTALLATION

M1131007100809

Pre-removal Operation
• Fuel Line Pressure Reduction (Refer to 

P.13A-887

).

• Intake Manifold Plenum Removal (Refer to GROUP15, 

Intake Manifold 

P.15-5

).

Post-installation Operation
• Intake Manifold Plenum Removal (Refer to GROUP15, 

Intake Manifold 

P.15-5

).

• Accelerator Cable Adjustment (Refer to GROUP 17, 

On-vehicle Service 

P.17-4

• Fuel Leakage Inspection

AC004783 AB

7

1

2

3

11

8

9

4

10

14

15

13

12

6

9

10

11

11

14

15

13

12

7

5

10

3, 5, 8

4, 6, 9

13 15 14

8.8 N·m
78 in-lb

8.8 N·m
78 in-lb

12 N·m
106 in-lb

12 N·m
106 in-lb

4.9 N·m
43 in-lb

ENGINE OIL

N

N

N

N

N

N

N

N

N

N

REMOVAL STEPS

1.

VACUUM HOSE CONNECTION

2.

FUEL RETURN HOSE 
CONNECTION

>>A<<

3.

FUEL PRESSURE REGULATOR

4.

O-RING

>>A<<

5.

FUEL HIGH-PRESSURE HOSE 
CONNECTION

6.

O-RING

7.

INJECTOR CONNECTOR

8.

FUEL PIPE

9.

O-RING

<<A>>

10. FUEL RAIL
11. INSULATOR
12. INSULATOR

<<A>>

>>A<<

13. INJECTOR
14. O-RING
15. GROMMET

REMOVAL STEPS (Continued)