Mazda 121 - Adjustment of Idle Speed

SCHEDULED
MAINTENANCE
SERVICES
ADJUSTMENT
OF
IDLE SPEED
Preparalion
'1.
Warm up the
engine
to normal
operatlng
temperaure.
2. Verity
ihat the
wat rod
e)dends
outward
iully
and the
idle
cam separates
from
the roller'
3. Turn all electric
loads OFF.
.
Blower
Fan
.
Headlight
.
Rear
Window
Delroster
4. Make sure
that
the engine
speed
does
not change
wnen
disconnecting
lhe
alr btpass
solenoid
valve
@
connector.
Note
.
lf lhe engine
sPeed decleases.
the engine
is still un-
der the
warm-up
condition'
5.
lfthe electfic
cooling
fan is operating,
wait tillthefan
slops
6.
Verify that the
engine
is running
at
idle in
good
condition-
7. Connect
the SST
to
the diagnosis
connector'
8. Connect
a tachometer
io the diagnosis
connector
lG-
ter-
minal
as shown.
L Sel switch
6)
to
Position
1.
10 Set TEST SW
10 SELF-TEST.
Note
.
lf the SST
is
not used,
iump
across
the TEN
telmi'
nal and
the GND
telminal
ot
the diagnosis
con'
nector.
ldle Speed
1. Check
the
idle speed
with a
tachometer.
ldle speed:
MTX
(Neutral) 750
jT
ATX
(P
range)
|,100
:'t
rpm
rpm
2.
lf not within the
specifacalion,
adjust
the idle
by lurning
the
throttle
adjusting
screw
OAS).
t-\*l
A-10