7
B on page 14) you will find an
explanatory diagram regarding the
injectors cut.
The petrol injectors are emulated
through special coils similar to the
coils used in the Modular LD of the
Sequent systems that are fitted
inside the ECU.
The codes of the connection har-
nesses for the 4 petrol injectors
are listed below:
06LB50010121 –
UNIVERSAL Harness
06LB50010122 –
RIGHT Harness
06LB50010123 –
LEFT Harness
3 PROGRAMMING
The software structure is maintai-
ned as similar as possible to the
BRC sequential systems already on
the market and familiar to the BRC
installer. Only the material differen-
ces introduced for SEQUENT 24
will be therefore here-after indica-
ted.
3.1 FILE TYPES
The SEQUENT 24 ECU is pro-
grammed by downloading two diffe-
rent types of files:
1. File .S19
2. File .FSL
the information necessary for the
vehicle’s operation is contained in
the file. FSL.
3.2 ASSISTED PERSONALI-
SED PROCEDURE
Let’s find out, in brief, about the
assisted personalised programming
procedure. The procedure is to be
carried out with the engine swit-
ched on and the changeover switch
on petrol mode (the programme will
show the installer when changing
over to gas).
The steps to follow are not far
removed from the ones analysed
for the Standard SEQUENT and for
the SEQUENT FAST, that’s why
you are kindly requested to refer to
the attendant handbooks for a more
detailed description.
Assisted personalised procedure
The main novelties have been
introduced in the equipment type
screen and in the RPM calibration
screen.
The equipment type screen (Picture
8 pag. 8) requires to enter an extra
information: the vehicle volume.
The RPM calibration screen
(Picture 9 pag. 8) allows selecting a
coil RPM signal besides selecting
and calibrating a normal RPM
signal or crankshaft position sen-
sor.
WARNING: by selecting an
RPM signal from the negati-
ve coil, the RPM won’t be correctly
visualised in all the working condi-
tions. In some of them as, for
example, in the cut-off, the visuali-
sed RPM signal could not corre-
spond to the vehicle’s real one;
nevertheless it doesn’t affect the
vehicle’s working.
4 TUNE-UP
This chapter will only examine the
differences with the previous
SEQUENT systems, otherwise you
are kindly requested to make refe-
rence to the handbooks on the
Standard SEQUENT
and
SEQUENT FAST.
4.1 CHANGING OVER
The changing over operation has
substantial differences distingui-
shing it from the previous Sequent
software, owing to the completely
different injectors cut on Sequent
Beginning of the
procedure
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Selection of the equipment
and injectors type
RPM calibration
Lambda calibration
(optional)
Save file
Self-mapping
Save file
End of the procedure
A
SSISTED PERSONALISED PROCEDURE
Pict. 7
