Mitsubishi Galant. Manual — part 377

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-78

<3.0L ENGINE>

AKX01294

B: BLACK
G: GREEN
L: LIGHT BLUE
W: WHITE
Y: YELLOW
*1:RED PAINT MARK
*2:RESTRICTOR

EVAPORATIVE
EMISSION
CANISTER

EVAPORATIVE EMISSION
VENTILATION SOLENOID

EGR VALVE

THROTTLE BODY

VACUUM
CONTROL
VALVE

CHAMBER

EGR SOLENOID

FUEL PRESSURE
REGULATOR

EVAPORATIVE EMISSION
PURGE SOLENOID

FRONT

AB

B

B

B

B

B

B

B

B

B

B

G

W G

G

Y

Y

*1

*1

*2

L

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-79

VACUUM CIRCUIT DIAGRAM

M1173007100025

<2.4L ENGINE>

AKX01295

INTAKE MANIFOLD

THROTTLE BODY

FROM AIR
CLEANER

TO COMB-
USTION
CHAMBER

EGR SOLENOID
(ON: CLOSE)

FUEL
PRESSURE
REGULATOR

EVAPORATIVE
EMISSION
PURGE
SOLENOID
(ON: OPEN)

CHAMBER

VACUUM
CONTROL
VALVE

EGR VALVE

FUEL
TANK

EVAPORATIVE
EMISSION
CANISTER

B: BLACK
G: GREEN
W: WHITE
Y: YELLOW
*1:RED PAINT MARK
*2:RESTRICTOR

EVAPORATIVE EMISSION
VENTILATION SOLENOID
(ON: CLOSE)

AB

B

B

B

B

B

B

B

G

G

W

Y

Y

*1

*2

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-80

<3.0L ENGINE>

VACUUM HOSE INSTALLATION

M1173007200011

1. When connecting the vacuum hoses, they should be

securely inserted onto the nipples.

2. Connect the hoses correctly, using the VACUUM HOSE

ROUTING as a guide.

AKX01296

INTAKE MANIFOLD

THROTTLE BODY

TO COMB-
USTION
CHAMBER

FROM AIR
CLEANER

HOSE JOINT

EGR SOLENOID
(ON: CLOSE)

FUEL
PRESSURE
REGULATOR

EVAPORATIVE
EMISSION
PURGE
SOLENOID
(ON: OPEN)

CHAMBER

VACUUM
CONTROL
VALVE

EGR VALVE

FUEL
TANK

B: BLACK
G: GREEN
L: LIGHT BLUE
W: WHITE
Y: YELLOW
*1:RED PAINT MARK
*2:RESTRICTOR

EVAPORATIVE
EMISSION
CANISTER

EVAPORATIVE EMISSION
VENTILATION SOLENOID
(ON: CLOSE)

AB

B

B

B

B

B

B

B

B

B

B

L

G

G

G

Y

Y

W

*1

*1

*2

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-81

VACUUM HOSE CHECK

M1173007300018

1. Using the VACUUM HOSE ROUTING as a guide, check that

the vacuum hoses are correctly connected.

2. Check the connection of the vacuum hoses, (removed,

loose, etc.) and check that there are no sharp bends or
damage.

POSITIVE CRANKCASE VENTILATION SYSTEM

GENERAL INFORMATION (POSITIVE CRANKCASE VENTILATION SYSTEM)

M1173005000044

The positive crankcase ventilation system is a
system for preventing the escape of blow-by gases
from inside the crankcase into the atmosphere.
Fresh air is sent from the air cleaner into the
crankcase through the breather hose to be mixed
with the blow-by gas inside the crankcase.
The blow-by gas inside the crankcase is drawn into
the intake manifold through the positive crankcase
ventilation (PCV) valve.

The PCV valve is designed to lift the plunger
according to the intake manifold vacuum so as to
regulate the flow of blow-by gas properly.
In other words, the blow-by gas flow is regulated
during low load engine operation to maintain engine
stability, while the flow is increased during high load
operation to improve the ventilation performance.

SYSTEM DIAGRAM

<2.4L ENGINE>

AKX01297

VENTILATION HOSE

POSITIVE CRANKCASE
VENTILATION (PCV)
VALVE

BREATHER HOSE

AB