Mitsubishi Montero Sport (2004+). Manual - part 130

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-115

5. Measure the resistance between the terminals of the EGR 

vacuum regulator solenoid valve.

Standard value: 29 

− 35 Ω [at 20°C (68°F)]

6. Replace the EGR vacuum regulator solenoid valve if 

resistance is out of specification.

VOLUME AIRFLOW SENSOR CHECK

M1173007900560

To inspect the sensor, refer to GROUP 13A, Multiport Fuel 
Injection (MFI) 

− Multiport Fuel Injection (MFI) Diagnosis − 

Diagnostic Trouble Code Chart 

P.13A-26

.

ENGINE COOLANT TEMPERATURE SENSOR 
CHECK

M1173008100619

To inspect the sensor, refer to GROUP 13A, Multiport Fuel 
Injection (MFI) 

− Multiport Fuel Injection (MFI) Diagnosis − 

Diagnostic Trouble Code Chart 

P.13A-26

.

CRANKSHAFT POSITION SENSOR CHECK

M1173008300312

To inspect the sensor, refer to GROUP 13A, Multiport Fuel 
Injection (MFI) 

− Multiport Fuel Injection (MFI) Diagnosis − 

Diagnostic Trouble Code Chart 

P.13A-26

.

AKX00352

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-116

EVAPORATIVE EMISSION CANISTER AND FUEL TANK PRESSURE RELIEF 
VALVE

REMOVAL AND INSTALLATION

M1173004800230

AC004550

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

AB

REMOVAL STEPS

1. PURGE PIPE CONNECTION
2. PURGE HOSE
3. VAPOR PIPE CONNECTION
4. VAPOR HOSE
5. VENT HOSE A
6. VENT HOSE B
7. VENT HOSE C
8. VENT HOSE D
9. VENT HOSE E

10. VENT PIPE
11. VENT PIPE
12. CANISTER COVER
13. CANISTER COVER ASSEMBLY
14. CANISTER BRACKET D
15. SOLENOID VALVE
16. OVER VENT VALVE MODULE
17. CANISTER ASSEMBLY

REMOVAL STEPS (Continued)

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-117

INSPECTION

M1173004900077

EVAPORATIVE EMISSION VENTILATION 
SOLENOID CHECK

1. Connect a hand vacuum pump to nipple (A) of the solenoid.
2. Check air tightness by applying a vacuum with voltage 

applied directly from the battery to the evaporative emission 
ventilation solenoid and without applying voltage.

3. Measure the resistance between the terminals of the 

solenoid.

Standard value: 17 

− 21 Ω [at 20°C (68°F)]

BATTERY VOLTAGE

NORMAL CONDITION

Applied

Vacuum maintained

Not applied

Vacuum leaks

ACX01414AB

A

ACX01415

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-118

CATALYTIC CONVERTER

GENERAL DESCRIPTION (CATALYTIC CONVERTER)

M1173005300131

The three way catalytic converter, together with the 
closed loop air-fuel ratio control based on the oxygen 
sensor signal, oxidizes carbon monoxides (CO) and 
hydrocarbons (HC), also reduces nitrogen oxides 
(NOx). 

When the mixture is controlled at stoichiometric 
air-fuel ratio, the three way catalytic converter pro-
vides the highest purification against the three con-
stituents, namely, CO, HC and NOx.

REMOVAL AND INSTALLATION

M1173003900438

Required Special Tool:

• MD998770: Oxygen sensor wrench

AC309258

49 N·m
35 ft-lb

25 N·m
18 ft-lb

25 N·m
18 ft-lb

49 N·m
35 ft-lb

49 N·m
35 ft-lb

2

3

7

5

N

N

N

8

6

4

44 N·m
33 ft-lb

1

1

1

49 N·m
35 ft-lb

44 N·m
33 ft-lb

1

44 N·m
33 ft-lb

AB

REAR CATALYTIC CONVERTER 
REMOVAL STEPS

2.

COMPRESSION SPRING

3.

REAR CATALYTIC CONVERTER

4.

GASKET
FRONT CATALYTIC CONVERTER 
REMOVAL STEPS

•

Under Cover and Skid Plate (Refer 
to GROUP 42, Under Cover 

P.42-207

)

<<A>>

>>A<<

1.

HEATED OXYGEN SENSOR

2.

COMPRESSION SPRING

5.

FRONT CATALYTIC CONVERTER 
(L.H.)

6.

GASKET

7.

FRONT CATALYTIC CONVERTER 
(R.H.)

8.

GASKET

FRONT CATALYTIC CONVERTER 
REMOVAL STEPS (Continued)