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ELECTRONIC FUEL INJECTION - AFC
Description
Intake-Air Sensor
The intake-air sensor is located
and the throttle housing (L)
Construction
Aluminum housing (A)
with Bye-pass channel (5)
and Adjustment screw (6)
Air sensor flap (1)
with Back pressure valve (8)
and Damping vane (2)
Damping chamber (7)
Return
spring
(9)
Potent
iometer
(B)
with
Pump contacts (C)
Temperature
sensor
I
Operation
The volume
of air that
The resultant
air
flow
transmitted via a shaft
temperature
sensor
I is
The injector which is
volume of
intake-air.
The damping vane is
designed
deflection
of the flap the damping vane is forced into the damping
air
within the
chamber can escape
thereby
reduced.
A
fraction
of the
air intake
mixture for idle
can be set
A pump
contact
is located within
contact is
closed
and
Prob
lem
condition:
Motor does not start
;
Troubleshooting
:
Remove the
plug
connected to the potentiometer on the intake-air
between
the contacts 6 and 9.
Nom
inal
value
:
120 to 200
in the
engine compartment at the right-hand side between the air filter
.
(D)
the
motor can draw in is
causes the sensor
flap to
to the potentiometer which
connected
to the potentiometer
activated
by the
control
to minimize
only through the release
is detoured
around
by means
of the adjusting screw
the
potentiometer. When the sensor flap is deflected open
the fuel
pump started
starting
diff
iculties; low
value: 200 to 400
determined
by the position
deflect against
the return
supplies
a
specific
and
influences the control
unit injects an
exact amount
sensor
flap
hunting.
The function is as follows: with
slit
(S)
the sensor flap via the bye-pass channel. The fuel-air
(6).
.
efficiency.
Measure between
7
of
the
th
ro
ttle
spring
.
T
he
fla
p deflection is
voltage to the con
signal
of fuel
appropriate
chamber.
The resultant
.
Sudden movements
sensor.
Connect an
ohm
contacts
\
4
valve.
trol
un it
.
The
vol
tage.
to
the
compressed
and
hunting is
the
pump
meter
7
and
8.
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