Mitsubishi Eclipse. Manual - part 709

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-117

EVAPORATIVE EMISSION CANISTER AND FUEL TANK PRESSURE RELIEF 
VALVE

REMOVAL AND INSTALLATION

M1173004800188

Pre-removal and Post-installation Operation
Fuel Tank Assembly Removal and Installation (Refer to 
GROUP 13C 

P.13C-13

.)

AC002235

1

2

3

4

5

6

7

8

9

10

AB

REMOVAL STEPS

1. PROTECTOR
2. CANISTER UPPER BRACKET
3. CANISTER ASSEMBLY
4. VENT HOSE
5. ONBOARD REFUELING VAPOR 

RECOVERY (ORVR) VENT VALVE 
MODULE

6. BRACKET
7. VENT PIPE
8. VENT HOSE
9. VENT HOSE
10. VAPOR HOSE

REMOVAL STEPS (Continued)

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-118

INSPECTION

M1173004600203

ORVR VENT VALVE MODULE CHECK 

1. Blow air through orvr vent valve module nipple (A). Check 

that the air flows out of nipple (B) and nipple (C).

2. Connect a hand vacuum pump to nipple (A) of the orvr vent 

valve module.

3. With air flow through nipple (C) obstructed, apply a vacuum 

and check that the vacuum is maintained.

AC001912AB

A

B

C

EVAPORATIVE EMISSION
VENTILATION SOLENOID

AIR FILTER

VENT VALVE

AC001913AB

A

C

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-119

4. Check air tightness by applying a vacuum with voltage 

applied directly from the battery to the orvr vent valve 
module and without applying voltage.

5. Measure the resistance between the terminals of the 

solenoid.

Standard value: 17 

− 21 Ω [at 20°C (68°F)]

6. Replace orvr vent valve module if resistance is out of 

specification.

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.

BATTERY VOLTAGE

NORMAL CONDITION

Applied

Vacuum maintained

Not applied

Vacuum leaks

AC001914

A

AB

AC001915

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-120

REMOVAL AND INSTALLATION

M1173003900375

AC004608

N

N

1

2

3

3

<2.4L ENGINE>

AC

12 ± 2 N·m
107 ± 17 in-lb    

12 ± 2 N·m
107 ± 17 in-lb    

49 ± 10 N·m
37 ± 7 ft-lb    

59 ± 10 N·m
44 ± 7 ft-lb    

44 ± 5 N·m
33 ± 3 ft-lb    

REMOVAL STEPS

<<A>>

>>A<<

1.

HEATED OXYGEN SENSOR 
(REAR) 

2.

FRONT EXHAUST PIPE 
(CATALYTIC CONVERTER 
INCORPORATED)

3.

HANGER

REMOVAL STEPS (Continued)

AC106411

N

N

N

N

1

2

3

4

5

6

7

8

9

<3.0L ENGINE>

44 ± 5 N·m
33 ± 3 ft-lb    

44 ± 5 N·m
33 ± 3 ft-lb    

49 ± 9 N·m
37 ± 6 ft-lb    

59 ± 10 N·m
44 ± 7 ft-lb    

32 ± 7 N·m
24 ± 5 ft-lb    

35 ± 4 N·m
26 ± 3 ft-lb    

35 ± 4 N·m
26 ± 3 ft-lb    

32 ± 7 N·m
24 ± 5 ft-lb    

49 ± 9 N·m
37 ± 6 ft-lb    

44 ± 5 N·m
33 ± 3 ft-lb    

12 ± 2 N·m
107 ± 17 in-lb    

12 ± 2 N·m
107 ± 17 in-lb    

12 ± 2 N·m
107 ± 17 in-lb    

N

AB