12
FIAT PUNTO LPG
ELECTRONIC CONTROL
UNIT
The vehicle has a dedicted electronic con-
trol unit for the LPG system; it uses the
incoming signals from the petrol injection
control unit and converts them into sig-
nals for the injection of the LPG.
The control unit for the injectors has the
same strategy as the petrol control unit
(phased, sequential, multipoint).
LPG/PETROL SWITCH
The LPG/petrol switch fig. 7is located on
the protective fuse flap (left side of the
dashboard) and includes:
A. LPG/petrol operating mode request
button;
B. LPG gauge: 5 LEDs, 4 green and 1 red
to indicate the reserve. The red LED on-
ly comes on when the last green LED goes
out.
The red LED indicates the reserve con-
dition;
ON. LPG operating mode indicator:
green LED, located under button A, on
constantly;
OFF. petrol operating mode indicator:
yellow LED, located above button A, on
constantly.
IMPORTANT When the ignition key is
turned to the MARposition the LEDs on
the ignition switch come on in accordance
with the following logic:
– with the petrol operating mode se-
lected: yellow OFFLED on;
– with the LPG operating mode se-
lected: all the LEDs in the switch are on
constantly and the green ONLED is flash-
ing. To select the type of fuel system desired
(LPG or petrol), press the button A-fig.
7.
To change the type of fuel system, it is ad-
visable to operate the button with the ve-
hicle stationary and the engine running or
,whilst driving, after having released the
accelerator.
If the switching takes place during accel-
eration or pick-up, there may be a brief
flat spot (fall in power).
fig. 7F0M0478m
Do not switch between the
two operating modes whilst
starting the engine.
604.39.942 Grande Punto GPL GB.qxp:603.39.944 Grande Punto GPL IT 15-12-2008 9:01 Pagina 12
