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AUTOMATIC
SPEED
CONTROL DEVICE (A.S.C. D.)
~
ELECTRONIC-CONTROLLED A/T
EQUIPPED MODEL (E4N71B)
0
Turn ignition switch to
"OFF"
Check continuity between
@
and
@
-
Trouble-shooting (Cont'd)
Ail
model only
0
When
AS
C
D
is
set
while vehicle
is
operating
in
"0
D
"
range,
0
D will be cancelled and
shifting to
0
D cannot be made thereafter
While vehicle
is
being driven using
A
S.C.D in
"0
D
"
range,
0
D will not be cancelled even
if actual car speed
is
6
km/h
14
MPH)
lower
than
set
speed
(Set
speed cannot be main-
tained
)
I
I
Check
0
D
cancel circuitfor
AS
C
D control unit
I
CONVENTIONAL A/T EQUIPPED
MODEL
(4N71B)
0
Turn ignition switch to "ON"
0
Turn
0
D
cancel switch to
"OFF".
0
Checkvoltage
@-@
and
B-0.
I
Check
from
harzsr
side
ignition
switch
f
ON
0
0
cancel
switch
+
OFF
Volrmeter
SEL741D
A.S.C.D. Actuator Check
1
Check continuity between terminal
@I
and
Continuity exist
...
O.K.
terminals
0,
0
and
@
Ohmmeter
\
CAUTION:
Do
not attempt to remove valves from actuator.
2
Connect battery (approx
12V)
to
harness
connector
of
actuator
as
shown below, and
apply vacuum
to
actuator.
If
diaphragm moves smoothly, actuator
is
0.K
CAUTION.
When
checking actuator
by
applying vacuum, do
not apply engine vacuum directly as
it
IS
too strong
to check actuator properly.
LA
s
c
D
actuator
BBttery
(12V)
SEL739D
EL-I
24
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