Mazda 121 - Page 166

F
OUTLINE
Componsnt
Remart
lghlllon
swilch
(STABT
posilion)
Engine cranking
signal
sent 1o
ECU
lnhlbllor swilch
(ATX)
Detects
in-gear conditioni
sends
signal
to ECU
Swich
ON
nNorPranges
Inleclion
body
a) lniects
iuel into inlake
manilold
b) Adiusls
inlake alr amounl
by throttle
valve
ct
ldl;-up by air bypass
solenoid vave
@
d) Detecls
amount
ol intakes
alr by airl ow
Conssts
ol
throtlle
vaive dashpot,
throtlle
sen'
sor,
last
idle
cam,
airflow
sensor,
inieclor,
pres'
sure
fegulator,
and ar
bypass
solenod valve
@
Ini6ctor
lniecrs fue
in relatlon to
englne needs
Conrrolled
by
signals
lfom ECU
High-ohmic
lnjector
Installed on
injecton
body
Main
relay
(FUEL
INJ
relay)
Supplies
electric currenl
to
injector, ECU,
elc
t{eurral
swnch
(t
TD
Detects
in-gear condiLon;
sends
signal to ECU
Switch
ON in
neulral
Orygen
sensoa
Deiects oxygen
concenlrationi
sends signallo
ECU
Zrrconia
cetamic
and
platrnum
coatng
Contros blowby
gas
Introduced
Inlo engine
P/S
pressure
3witch
Derecrs
P/S
operatoni
sends signal lo
ECU
P/Sr
ON
when sleeing
wheel
lum€d
Prelsure
regulrtor
Adjusts Jue
pressure
supplied
to
injector
Specd
s€nsor
Detects speed: sends
signal
to ECU
Insialled on
instrumenl
cluster
stopllglrr
swllch
Delects
braking operalion
(deceleranon)i sends
signal
to ECU
Solenoid
valve
(purg. conltoD
Conlrols evaporative
lumes
from canister
10
in_
Throltle
sercof
Deiects lhrottle
valve op€nlng
anglel sends
sg_
nal to ECU
Installed
on
injecuon
body
Wat.r thetmos€nsor
Delects coolant
temperature;
sends
signal to
ECU
lnsraled on
iniake
manlfo d
F-l0