31
Components
6.2 ECU – The electronic control unit
Purpose and function
The ECU receives the sensor signals and immediately recognises all changes from programmed
nominal tire pressure values by combined comparison with threshold pressure values and pressure
changes.
Faults occurring during operation are stored in the ECU for diagnostic purposes.
The ECU is mounted in a central position on the vehicle chassis so that perfect radio communication
with all sensors and between trailer ECU and towing vehicle ECU is ensured. You should use special
brackets for good radio contact.
Fixing bracket (WABCO part number: 446 220 000 4)
Radio contact is provided by antenna integrated in the ECU housing that guarantees interference-free
pressure signal reception from all sensors.
Information and technical data
ECU – THE ELECTRONIC CONTROL UNIT
WABCO part numbers
446 220 100 0: Towing vehicle and bus
446 220 110 0: Trailer and trailer train (can be cascaded up to 5 times with
22 sensors respectively, must be parameterised by diagnosis)
ECUs essentially differ by radio communication signal structure and CAN
bus (ID) connection. External distinguishing mark by type label only.
Further ECU types are tailored to specic customer requests and have other
pin assignments.
Supply voltage 12 or 24 volts
Assembly Central position on the vehicle chassis
To Next Page
Loading...
