MANUALS · FUEL [13] · страница 32 из 340 · Открыть оригинал PDF ↗

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Датчик массового расхода воздуха

OPERATION

The flow sensor is incorporated within the air
cleaner; it functions to convert the amount of
engine air intake to pulse signals of a frequen-
cy proportional to the amount of engine air in-
take, and to input those signals to the engine
controlunitTheenginecontrolunitthen
baseduponthosesignals,calculatesthe'
amount of fuel injection_etc,
The power for the air flow sensor is supplied
from the control relay to the airflowsensor,
and is earthed at the engine control unit:The
air flow sensor; by intermitting the flow of the
5V voltage appliedfromtheenginecontrol
unit, producespulsesignals.

TROUBLESHOOTING HINTS

Hint 1:

If theenginesometimes stalls,try . startingthe
engine and shaking the air flow sensor harness_
theenginethenstalls,incorrector improper
contact oftheair flow sensor connector is' the
probable cause
Hint 2:

Ifwhen the ignition switch is switched ON (but
the engine isnotstarted) ,theair' flowsensor
output frequencv 'is ay value other than zero,
malfunction of the air flow sensoror of theen-
gine control unit is the probable cause_

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