Table of Contents
Advertisement
Emission Control
System
T
id
2
L
L
1
Flg
EC
J 1
E G R
control valve
EC231
Trouble
dlagnollell
and correction
II
Trouble in E G R
control
system
1
Check
E G R control valve
Good
No
good
Clean valve
seat
1
Check thermal
vacuum
valve
No
good
Good
l
Others
Leakage
in
vacuum
signal
line
I
Diaphragm spring
2
Diaphragm
3
Valve
sh
ft
4
Valve
5
Valv
Seat
6
Valve chamber
Replace
0
Replace
EC
6
E
G
R
control valve
To
inspect
parts
it is
necessary
first
to
remove
E C R
control
valve frum
engine
I
Check
to
be cerrain
that
vacuum
hose is
not
deformed
excessively
If it
is
the
probability
is that E G R
con
trol valve is
not
operating properly
due
to
leakage
of
vacuum
signals
To
reo
medy
this
condition
replafo
e
vacuum
hose
2
Remove
E C R
control
valve
from intake manifuld
3
Apply
a
vacuum
of
13 3
to
14 7
kPa
100
to
110
mmHg
3
94
to
4
3 3
inHg
to E G R
con
trol
valve
VaC
lum
application
can
easily
be made
by
the method illust
rated in
Figure
EC
12
ft
is
corred
if
valve
moves
into
full up
position
E
G
R
control
valve
should stay
uplifted
fur
more
than
30
seconds
after
vacuum
is
stopped
a
r
ET152
jo
ig
EC 12
Checking
E G R control
ualue
4
Visually
inspect
E G R
control
valve for
sign
of
damage
wrinkle
or
otherwise deformation
5
Clean
the
E G R
control
valve
seat
with
brush
and
compressed
air to
eliminat
e
clogging
of
E
G R
control
valve
EC350
Fig
EC 13
Cleaning
E G R
control
valve
leat
Advertisement
Chapters
Table of Contents
