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16
OPERATION
N° MA.IE.
144-0
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5.
Air-How
sensor
(
DIAGRAM
5
-
Disconnect
the E.CU.
-
Using
an
ohmmeter
check the
continuity of circuits
«
6
« «
7
«
8
»
and
«
9
»
linking
the air-flow
sensor
to
the multiple terminal
board,
as weil
as the
continuity
between
each
of
the terminals
- The oir-flow
meter
does
not
require any maintenance.
It
is not
necessary to oU
the
fiap. It
must
work
without
high spot
or
catching.
When the
air--flow
sensor
is
removed,
blank
off
the ducts
so
as to protect it from
dust.
- Check the air
circuit for
air-tightness.
6. Resistors and injectors
A dirty
injector
may cause a
lock
of power. or
an unstable
idling
speed
-
It is
possible
to
test the
functioning
of
the
injectors with
the engine
idling by
disconnecting
each
injector
in
tum the engine
rpm
should
decrease each
time.
-
Disconnect
the
E CU.
-
The resistance
of
an
irijector
is
2
to
3
.
- Each supplementary
resistance
is
5
to 7 ft.
-
The volume delivered
by an
injector
(
kept constantly open and under the
normal operating
pressure
)
is
approximately 200 cm3/rnin
(
12 20 cu.in/min
).
-
If
the rubber
pipe on one of
the
injectors
appears
wet
on
the
outside,
the
injector must
be
replaced.
-
Using an ohmmeter, check the
continuity
of
the
circuits.
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