MANUALS · FUEL [13] · страница 232 из 340 · Открыть оригинал PDF ↗

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SERVO VALVE POSITION SENSOR

6Fu1722

OPERATION

Theservo valve positionsensor converts the
changes(increaseOrdecrease)inthevalve
positionoftheengineidlingspeedcontrol
servo (ISC) into pulse signals and inputs these
signals to the engine control unit:The engine
control unit determines the valve position from
these signals,and controlsthe engine idling
speed control servo

Диагностика и устранение неисправностей

Theservo valve position sensor is themost im-
portantsensorfor controllingtheengineidling
speed. If a malfunction develops when the engine
is idling and the electrical load is varied by turning
the air conditionerswitchtoONand OFF, etc ,
this sensor is probably defective.

5V power is supplied to the servo valve posi-
tion sensor from the engine control unit,and
the earth connection is made from the engine
control unit:

5vpoweris appliedtothe two servovalve
positionsensoroutputterminals.Whenthe
servoor
valve position is changed (increased
decreased) by the DC motor inside the servo
theservovalve position sensor generates
signal fromthe opening and closing between
the output terminal and the earth_

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