All trucks1 are equipped with a function for displaying warning messages for open
hatches. A warning message can be used for different types of hatches where there is
a sensor indicating that the hatch is open or closed.
Warning messages can be displayed for 5 hatches located on the chassis frame and
in the bodywork.
For safety reasons, Scania recommends the warning function to be installed.
The warning message is presented as a display message in the instrument cluster
(ICL). The message shows where the hatch that generated the warning message is located.
Internal vehicle signalA function in the vehicle, fitted at the factory.
Analogue signalVia connector C259 in the bodywork console.
External CAN
a. Controller Area Network
Information on CAN messages is found in the document External CAN Communication Specification.
Activation using internal vehicle signals and analogue signals
Different functions in the vehicle are factors that affect the activation.
Internal signals in the vehicle come from a function fitted at the factory. Examples of
factors that can affect the activation by using internal signals are applied parking
brake and gearbox in drive mode.
a
network
CAN message
Activation
Use analogue signals when a factor does not generate an internal signal as above. Examples of factors that can affect the activation by using analogue signals are an activated switch in the instrument panel or a sensor in the bodywork.
Define when and how the activation is to take place by using BICT (Bodywork Interface Communication Tool) and SDP3 for bodybuilders (Scania Diagnos and Programmer 3):
1. Create a logic diagram in BICT that defines which factors shall affect the activa-
tion. Factors can be, for example, functions in the vehicle that generate internal
signals or switches that generate analogue signals.
2. Define parameters in SDP3 which state the conditions for how and when the dif-
The examples show a connection where each hatch has its own signal. Several hatches can also be connected in series to a common signal.
Example of an analogue connection
Pos.DesignationInformation
2
1CablesMinimum permitted cable cross section is 0.75 mm
Connect the cables from C259, any position 1-10, to connector C494, any free positions. The choice of positions
in C494 affects the connection in the DIN connector on
the chassis frame.
2Cable harness
Installed at factory.
from cab to frame
3CablesConnect the cables from the hatch sensor to DIN connec-
tor C486, C487 or C488 depending on which positions
have been used in C494.
4CablesConnect the sensors to a ground connection in the left-
hand frame side member.
The signal to C259 is active when the hatch is open and the circuit closed.
.
DIN
C259
C494
C259
1-10
1
C494
2
DIN
3
4
Information on ground connections is found in the document Power supply and
ground connections.
Information on the DIN connectors is found in the document Cable harnesses for
bodywork functions.
Information on the connectors is found in the following documents: