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