AIR BYPASS CONTROL
SYSTEM
AIR BYPASS CONTROL
SYSTEM
DESCFIPTION
The air bypass system operates
to improve idle stability and vehicle drivability.
This system supplies throttle
valve bypass air into intake manilold according
to engine
load
condition and
driving conditions.
This system consists ot two solenoid
valves controlled by the ECU.
AA AYPASS
SOLENOIO
VALVE
@
ArF
BYPASS SOLENOTO
VALVE
@
AIF BYPASS
SOLENOID
VALVE
@
THAOTTLE
VALVE
Operation ot
Ai. Bypass Solenoid Valve
Englno condltlon
Air
bypa$ aolenold wlve
@ @
Duing cranking
To
improve $anability
o
o
lgnition
swilch OFFrON
To
prcvenl
lrorn
slickng
o
'Acc€ssory
ON
To improve
srartability
o
P/S
pressure
sw{ch ON
o o
,dJC swilch ON
o
o
Wam up
(asoc-8ooc)
o
Selecl
lever N-D
(ATX)
To alleviats sudden engine speed
drop
o
Dunng d€celelation
{d€celelation
conlrol)
To improve
divabilty
o o
'Accessory
is headlights, rear window defrosler, blower swilch and cooling Jan.
F
F-107
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