WABCO TAILGUARD, System Description

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Start-up Start-up
8 .4 .1 Electronic Extension Module pressure test
The TEBS E Diagnostic Software controls the solenoid valves and measures
the pressure regulation by means of a pressure sensor ( braking via separate
valves ) or controls a brake request and checks the vehicle’s response
( braking via prepared interface for TailGUARD ).
8 .4 .2 Stop light control
This test measures the correct voltage via the reverse light and the stop light
switch and tests the stop light actuation via TailGUARD.
8 .4 .3 Measured value speed signal Electronic Extension Module
This test evaluates the trip recorder speed signal and the tester must confirm
that the speed indicated in the diagnostic software matches the actual speed.
For this, the vehicle must be briefly driven.
Another option is to simulate a speed on the trip recorder via diagnosis. This
measurement can also be carried out after start-up, but automatic braking is not
possible prior to this test.
8 .5 Start-up of the ultrasonic sensors
Requirements: For start-up of the ultrasonic sensors and the TailGUARD
system, the ignition must be turned on and the reverse gear engaged.
Additionally, the diagnostic computer must be connected to the TailGUARD
diagnostic port (with yellow cap) and the TEBS E Diagnostic Software started.
8 .5 .1 Normal EOL test
Initialisation of the ultrasonic sensors is carried out in several steps as part of
the end-of-line test:
1 . Learning the ultrasonic sensors
The ultrasonic sensors must be learned to detect the position on the vehicle
after installation.
If the start-up process (menu
Start-up => Start ) was started, the test of the
ultrasonic sensors is started automatically, otherwise the test can also be
started as follows:
– In the TEBS E Diagnostic Software, click
Measured values => TailGUARD
.
– In the TailGUARD window, click on the Begin start-up button – depending on
the respective system configuration the positions of the ultrasonic sensors
are assigned automatically or the TEBS E Diagnostic Software prompts you
to cover the ultrasonic sensors one after the other, where it is essential to
adhere to the following sequence:
Main level: 1-left 2-right 3-middle
Additional level: 4-left 5-right 6-middle
Ö
The ultrasonic sensor to be covered flashes.