CITROEN CX Series - Page 135

Supplement to Manual
818.1
ADD
7c'
(p('r- ,Oj G-'
`l.
tim.
o
.«"
L-818
OPERATION
N° MA.IE.
144-0
(/cki,,
ciiid
a(Ijustinc t/ « LJeto#iic »
«/(cfro,/ic
Op.
MA.IE
144-0
15
/fl4
fl1/ectiOl syst(w/
3. Fuel pump
feed
(
with engine
running
) (
DIAGRAM
3
0
0
0
0
0
z
c
E
0
0.
II,
-
Disconnect
the E.CU
-
Disconnect
from the
air-How serisor the
air
hose to
the butterfly
hous ing
Switch on
the
ignition.
-
Actuote
the air-flow sensor
flap by
hand when the petrol pump
contact closes.
the pump
should
be heard
working.
If
not,
test
the
circuit
using
a battery
operated ohmmeter,
without
forgettirig to
test
between terminal «36»
on
the air-flow
sensor and terminal
«
20
»
on
the ECU. for continuity
(
The 2nd terminal
is not
connected
to
the
E.C,U.
).
- The res
istance
between terminals
«
86 b
»
and
«
85
»
on
the relay box! //;/(/(r /h L
H. hu1!amp
)
must
be
between
52 and 78 Q.
4. Supplementary
air control
(
DIAGRAM
4
-
Disconnect
the E.C.U.
-
Check that
the
supplementary
air control
is
properly connected
(
arrow
on
the casing).
If
it is fitted
the
wrong
way
round.
the
port
may be blocked.
-
The
resistance betweeri terminals
«
34
and
«
48
»
on
the
supplementary
air
control
must be 50 approx.
-
Visual
checking the
port on
the supplementary
air
control
must
be
open
when the engine
is
cold.
and
closed
when
the
engine temperature
is
above
600
C.
-
With
the engine
cold. if
the air
pipe to
the supplementary
air
control is
flattened the engine rpm must
decrease.
- With
the engine
warm,
if
the
air
pipe is disconnected,
the engine must accelerate.
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