Installer's handbook - 1/3 Types of installation - 2/3 Software guide ...

ECU of a system with the other one,
fitting it in the wrong equipment.
Such an error must be avoided,
as it can damage the
ECUs and/or the original equipment
of the vehicle.
If, after the installation of the
equipment and the ECU, the vehicle
does not start up, it is a good tip not
to insist, before having checked that
the ECU is of the correct type.
6.2.3 SEQUENT GENIUS AND
GAS TEMPERATURE SENSOR
The temperature sensor contained
in the Genius Sequent,
Genius M and Genius Max is different
from the one used for the
Flying Injection.
Confusing the two sensors and
mounting the wrong one, the ECU
will not be able to determine the correct
gas temperature, to act correctly
the programmed changeover strategies
and to make the corrections in
the injection times that depend on
the gas temperature, while running
on gas.
6.2.4 SUPPLIES AND GROUND
FROM BATTERY
Sheath “A” in figure 2 contains
two red and two black wires to be
connected to the car battery: the
red wires to the positive and the
black ones to the negative. It is
important to connect the wires as
they are, allowing that they reach
separately the terminals of the battery,
without joining the wires of
same colour in an only wire or joining
them along the harness.
The grounds must be
always connected to the
battery negative and not to the
vehicle’s structure, engine
ground or other grounds present
on the vehicle.
6.2.5 FUSES AND RELAY
At the outlet of the sheath “B”
(see picture 2) there are the two
15A and 5A fuses of the SEQUENT
equipment. The harness is supplied
with the two fuses with correct
amperage, fitted in the right place.
It is recommended not to substitute
the fuses with others of different
amperage and not to invert their
position. The 5A fuse will be fitted in
the fuse-holder with the smaller
section wires, while the 15A fuse
will be fitted in the fuse-holder with
the larger section wires.
At the outlet of the sheath “B”
there is also a relay that the
SEQUENT utilises to interrupt the
battery positive coming from the
actuators.
After finishing the connections, it
is recommended to properly fix and
protect both the fuses and the relay.
6.2.6 CHANGE-OVER SWITCH
The 10-pole multipolar cable “C”
inside the harness, ending on the
10-way connector, is used for the
connection of the ECU to the changeover
switch placed in the passenger
compartment (picture 2). In
order to make easier its passage
across the wall openings, it is suggested
to bend the connector by
90° to make it parallel to the wires.
The SEQUENT equipment uses
the BRC two-position changeover
switch with buzzer (see BRC Price
List for sale codes).
6.2.7 DIAGNOSTIC POINT
The PC connection to the FLY
SF ECU is based on a diagnostic
point, directly coming from the harness.
It is the 3-way connector diagnostic
point (female-holder on the
harness), equipped with a protection
cap. The diagnostic point is
usually placed near the 56-pole
connector of the ECU. The connecting
cable “D” differs from the one
used for the connection of the PC
on the Flying Injection system, for
39
the type of connector. For the PC
connection it is necessary to use
the suitable cable code DE512114.
6.2.8 LEVEL SENSOR
The resistive type level sensor
has to be connected directly to the
harness through the 2-pole connector,
pre-cabled (Sheath “E” on
drawing of picture 2). There is no
error possibility, because the connector
of the level sensor is the only one
of this type. The connection between
the ECU and the sensor can be
made through the special extension
cable (06LB50010062) ended on the
special connector of the resistive
sensor for the Europa Multivalve. The
sheath “E” also contains the 2-pole
connector for the back solenoid valve
connection (see par. 6.2.8).
6.2.9 SOLENOIDVALVES
The solenoidvalves has to be
connected to the harness through
the pre-cabled connectors connected
to the wires contained in the sheaths
“E” and “F”. The front solenoid valve
will be connected to the connector of
the sheath “F”, while the rear one
(“Europa” multivalve) will be connected
to the connector of sheath “E”
through a suitable extension cable
code 06LB50010062 (picture 1 page
37 and 3 page 40).
The sheath “E” also contains the
connector for the resistive level sensor
described in par. 6.2.8.
6.2.10 GAS TEMPERATURE
SENSOR
The temperature sensor, placed
on the pressure reducer, is of the
two-wire resistive type, based on
NTC thermistore. It is a sensor,
which is different from the one used
in the Flying Injection equipment.
By confusing the two sensors and
mounting the wrong one, the ECU
will not be able to determine the
correct gas temperature, to act cor-