Connecting
General
Note:
In order for SDP3 to be able to communicate
with certain control units, the systems must be
activated. This applies to the auxiliary heater
and radio, which must be turned on when connecting.
The response time of individual control units
varies after the starter key has been set to drive
position. If SDP3 starts control unit identification too soon after the starter key has been set
to drive position, some control units may not
respond. In that case, re-establish the connection.
SPD3 carries out a number of checks when
connecting to the vehicle or industrial and
marine engine. During the connection phase
you will be given information about the activities being carried out by SDP3. If a fault occurs
during the connection, you will be informed
about this and guided through with the help of
the program.
SDP3 reads and compares, for example, the
information in the SOPS file with the information available in the control units. If there are
discrepancies you will be informed about this,
and if spare part programming needs to be carried out on one or more control units, SDP3
will provide this option.
Procedure when connecting
The basic procedure when connecting to a
vehicle is displayed here. With some types of
work the procedure only includes parts of the
steps below.
• SDP3 connects to the vehicle.
• SDP3 retrieves vehicle information from the
vehicle.
• SDP3 identifies the vehicle’s control units.
If any control unit fails to respond, this will
be indicated at the bottom of the connection
window.
• SDP3 reads the SOPS file from the coordinator and instrument cluster which are the
control units containing a SOPS file.
• SDP3 verifies the SOPS file. This means
that the program checks both SOPS strings
and checks that they are the same.
• SDP3 retrieves system information about
the control units from its database.
• SDP3 checks identified control units against
the SOPS file.
If one of the control units does not correspond to the SOPS file, you will be
informed about this and about how to proceed.
• SDP3 retrieves information about the product type from the SOPS file. This means that
SDP3 checks whether it is connected to a
truck, bus or industrial and marine engine.
• SDP3 checks the identity of the control
units.
• SDP3 updates the SOPS file with the identity of the control units.
• SDP3 retrieves information about the
updates.
• SDP3 retrieves the vehicle settings from the
SOPS file.
SDP3 compares the control unit configuration with the contents of the SOPS file.
Scania VCI3 Diagnostic Tool for Scania Trucks Full Chips High Quality
If the configuration differs, you will have
the opportunity to carry out spare part programming of the control units that are not
configured correctly.
• SDP3 reads fault codes from the control
units.
• SDP3 retrieves other information from its
database.
• SDP3 checks the conditions to remain connected.
• SDP3 finishes retrieving vehicle information and the OK button becomes available.
Automatic updates with
SDP Service
SDP Service is a background service which is
installed when installing SDP3. The program
manages itself and you as a user cannot interact
with it. If SDP Service does not work as it
should, SDP3 can still be used without any
problems. If there are new updates for the program, they will be carried out automatically
once you start SDP3. If you do not want to
allow the updates, you can click Continue
without updating. The service’s task is to:
• Handle downloads and installations from
the Automatic updates service
• Upload BIC project files to Scania if work
has been carried out in off-line mode
• Upload SDP3 log files to Scania
Starting a task
When you have started the program, the start
window will be displayed. Here, you can select
the type of task you wish to carry out:
• Checks and adjustments
• Conversion
• Maintenance
• Product update
• Bodywork
In SDP3 you can see which product updates are
available for the connected product. The product updates can be shown from all work
options, but you carry them out from the Conversion or Product update work options.
(08.2025)Scania SDP3 2.66.2.6 Diagnosis & Programming Truck Software
When product updates are available for a system, a symbol will be visible in the tree structure. To view available updates, right-click on
the tree structure and select the option Show
updates, or use the menu selection Updates in
the menu Show.
More information about the relevant work
option can be found on the following pages.
Checks and adjustments
In the Checks and adjustments work option,
you can carry out troubleshooting and change
adjustable values.
Here you can access information in order to
troubleshoot the different control systems and
their related components and circuits. There is
also an option to troubleshoot via user functions.
You can also reset parameters in the vehicle
control units and carry out calibrations and
resetting.
Here, you can also analyse the vehicle’s stored
operational data, either directly in SDP3 or via
the menu option View stored operational data.
For more information, refer to section Opera
tional data.
Procedure when checking
A suitable procedure for troubleshooting is
described here.
Start by finding out what problems the cus
tomer has experienced.
- Start SDP3.
- Start the Checks and adjustments work
option.
- Go to Electrical system and read the regis
tered fault codes.
All registered fault codes will be displayed
under Electrical system.
If there are fault codes connected with the
problems which the customer has experienced,
continue troubleshooting via Electrical system
by checking the circuits concerned and rectify
the fault. Otherwise, you should carry out trou
bleshooting via User functions. Start by check
ing that the vehicle has a user function which
could be connected with the problem experi
enced by the customer. Then continue trouble
shooting using the information provided under
User functions.
