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Components
Components
6.3 WABCO display
Purpose and function
The display is used to show all pressure and leakage information and to relay any necessary
information on the OptiTire system. It operates in combination with the OptiTire ECU (WABCO part
number: 446 220 100 0).
The display is connected to the ECU via a CAN bus.
All tire pressures can be queried by pressing a button (see chapter 10.3 "Checking pressure values",
page 66). Manual checks of the tire pressure are superuous. Faulty tire pressures should be
corrected directly at the tire valve.
Since warnings are also signalised acoustically, the display does not need to be installed within driver's
direct eld of vision. Optical warnings are indicated by integrated lights:
red (stop immediately)
yellow (drive slowly)
Information and technical data
WABCO DISPLAY
WABCO part numbers
446 221 000 0 (standard version)
446 221 100 0 (special variant for straddle carrier)
Supply voltage 12 or 24 volts
Display Up to 16 tires (towing vehicle and up to ve trailers)
Operation see chapter 10 "Operation", page 65.
6.4 Connecting cables
OptiTire is connected to the vehicle cabling in two sections on the towing vehicle / bus:
The rst section comprises the connection of the ECU to the distribution element in the vicinity of
the driver's workplace. This section is splash-proof allowing external installation on vehicle. The
OptiTire cables are connected via the adapter cable (WABCO part number: 894 600 001 2).
The second section is a cable set designed exclusively for the interior. Here there is a split
connection from the connection of the rst cable to the WABCO display, to the diagnostic port,
and a connection to the vehicle wiring terminals using free cable ends.
Basic wiring principle for towing vehicle / bus is displayed in the following illustration:
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