Pajero II Workshop Manual 1991 · FUEL · страница 32 из 339 · Открыть оригинал PDF ↗

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Датчик массового расхода воздуха

OPERATION

The flow sensor is incorporatedwithin 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, ad to input those signals to the engine
controlunit:Theenginecontrolunitthen_
baseduponthosesignals,calculatesthe
amount of fuel injection,etc

The power for the air flow sensor is supplied
fromthe control relay to theair flow sensor,
and is earthed at the engine control unit:The
air flow sensor, by intermitting the flow of the
5Vvoltage appliedfromtheenginecontrol
unit, producespulsesignals_

TROUBLESHOOTING HINTS

Hint 1:

theenginesometimes stalls, try startingthe
engine ad shakingthe air flowsensor harness
the enginethenstallsincorrectorimproper
contact oftheair flowsensorconnector isthe
probable cause
Hint 2:

If,when the ignition switch is switched ON (but
theengineisnotstarted) ,theairflowsensor
output frequency is any valueother than zero,
malfunctionof theair flow sensoror of theen-
gine control unit is the probable cause_

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