Mitsubishi Pajero Pinin. Manual - part 163

 

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Mitsubishi Pajero Pinin. Manual - part 163

 

 

ENGINE AND EMISSION CONTROL – 

Emission Control System

17-3

VACUUM CIRCUIT DIAGRAM

To 
combustion
chamber

Intake manifold

Throttle body

From air
cleaner

EGR control
solenoid
valve (ON:
OPEN)

Vacuum hose colour
B: Black

R: Red

Canister

M

EVAPORATIVE EMISSION CONTROL
SYSTEM

PURGE CONTROL SYSTEM CHECK

1.

Disconnect the vacuum hose (black) from the intake
manifold and connect it to a hand vacuum pump.

2.

Plug the nipple from which the vacuum hose was removed.

3.

When the engine is cold or hot, apply a vacuum of 53
kPa, and check the condition of the vacuum.
When engine is cold
(Engine coolant temperature: 40



C or less)

Engine condition

Normal condition

At idle

Vacuum is maintained

3,000 r/min

When engine is hot
(Engine coolant temperature: 80



C or higher)

Engine condition

Normal condition



At idle



Within 4 minutes
after the engine
has been started

Vacuum is maintained



3,000 r/min



Within 3 minutes
after the engine
has been started

Vacuum will leak.

Plug

Vacuum
hose
(black)

ENGINE AND EMISSION CONTROL – 

Emission Control System

17-4

PURGE PORT VACUUM CHECK

1.

Disconnect the vacuum hose (black) from the intake
manifold purge vacuum nipple and connect a hand vacuum
pump to the nipple.

2.

Start the engine and check that the vacuum remains fairly
constant after racing the engine.

NOTE
If vacuum changes, it is possible that the intake manifold
purge port may be clogged and require cleaning.

PURGE CONTROL SOLENOID VALVE CHECK

NOTE
When disconnecting the vacuum hose, always make a mark
so that it can be reconnected at original position.
1.

Disconnect the vacuum hose (black stripe, red stripe) from
the solenoid valve.

2.

Disconnect the harness connector.

3.

Connect a hand vacuum pump to nipple (A) of the solenoid
valve (refer to the illustration at left).

4.

Check airtightness by applying a vacuum with voltage
applied directly from the battery to the purge control
solenoid valve and without applying voltage.

Battery voltage

Normal condition

Applied

Vacuum leaks

Not applied

Vacuum maintained

5.

Measure the resistance between the terminals of the
solenoid valve.

Standard value: 30 – 34 

 (at 20



C)

Purge port
vacuum
nipple

Engine r/min

Vacuum

A

B

B

Battery

17-1

ENGINE AND

EMISSION

CONTROL

CONTENTS

ENGINE CONTROL SYSTEM

2

. . . . . . . . . . . . 

GENERAL

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Outline of Changes

2

. . . . . . . . . . . . . . . . . . . . . . . . . 

SERVICE SPECIFICATION

2

. . . . . . . . . . . . . . . . 

ON-VEHICLE SERVICE

2

. . . . . . . . . . . . . . . . . . . 

Accelerator Cable Check and Adjustment
<4G9-MPI>

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

ACCELERATOR CABLE AND PEDAL

3

. . . . . . 

EMISSION CONTROL SYSTEM 
<MPI>

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

GENERAL

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Outline of Changes

4

. . . . . . . . . . . . . . . . . . . . . . . . . 

GENERAL INFORMATION

4

. . . . . . . . . . . . . . . . 

SERVICE SPECIFICATIONS

5

. . . . . . . . . . . . . . 

VACUUM HOSE

5

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Vacuum Hose Piping Diagram

5

. . . . . . . . . . . . . . . . 

Vacuum Circuit Diagram

6

. . . . . . . . . . . . . . . . . . . . . 

Vacuum Hose Check

6

. . . . . . . . . . . . . . . . . . . . . . . . 

Vacuum Hose Installation

6

. . . . . . . . . . . . . . . . . . . . 

CRANKCASE EMISSION CONTROL 
SYSTEM

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

System Diagram

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Component Location

7

. . . . . . . . . . . . . . . . . . . . . . . . 

EVAPORATIVE EMISSION CONTROL 
SYSTEM

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

General Information

8

. . . . . . . . . . . . . . . . . . . . . . . . . 

System Diagram

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Component Location

8

. . . . . . . . . . . . . . . . . . . . . . . . 

Purge Control System Check

9

. . . . . . . . . . . . . . . . 

Purge Port Vacuum Check

9

. . . . . . . . . . . . . . . . . . . 

Purge Control Solenoid Valve Check

10

. . . . . . . . 

EXHAUST GAS RECIRCULATION (EGR)
SYSTEM

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

General Information

11

. . . . . . . . . . . . . . . . . . . . . . . . 

Operation

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

System Diagram

11

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Component Location

11

. . . . . . . . . . . . . . . . . . . . . . . 

Exhaust Gas Recirculation (EGR) Control 
System Check

12

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

EGR Valve Check

12

. . . . . . . . . . . . . . . . . . . . . . . . 

EGR Port Vacuum Check

13

. . . . . . . . . . . . . . . . . . 

EGR Control Solenoid Valve Check

13

. . . . . . . . . 

CATALYTIC CONVERTER

14

. . . . . . . . . . . . . . . 

ENGINE AND EMISSION CONTROL – 

Engine Control System

17-2

ENGINE CONTROL SYSTEM

GENERAL

OUTLINE OF CHANGES

The following service procedures have been established due to the addition of vehicles with 4G9-MPI
engine. The other contents are the same as the 4G9-GDI engine.

SERVICE SPECIFICATION

Items

Standard value

Accelerator cable play   mm

1 –  2

ON-VEHICLE SERVICE

ACCELERATOR CABLE CHECK AND
ADJUSTMENT <4G9-MPI>

1.

Check the accelerator cable play when the accelerator
pedal is released.

Standard value: 1 – 2 mm

2.

If the play is not within the standard value, turn the adjusting
nut to adjust the play to the standard value.

Adjusting nut

 

 

 

 

 

 

 

Content   ..  161  162  163  164   ..