Allocation Testing - Without Control Pressure - WABCO Compact Tester Bedienungsanleitung

first digit of the display shows a dash in
place of a zero.
5.3 Allocation Testing - without
control pressure -
After testing retarder control, one wheel
can be turned without the <CLEAR>
button being pushed again. The display
then shows the current speed of the
wheel being turned in k.p.h. This is done
in full figures
(e.g. wheel speed measured for wheel
A = 5.6 k.p.h. ? display: 'A05').
4 k.p.h.
wheel speed
modulator
actuation
Pulse Programme 1:
4 k.p.h.
wheel speed
modulator
actuation
Pulse Programme 2:
The sensor/modulator allocation is
checked by determining that the correct
sensor/modulator have been paired by
way of listening or feeling (touching).
The functional test is aborted by push-
ing any button. This is followed by the
type of ECU identified being displayed.
If wheels C or E are being turned, any
pressure hold
pulse
decrease
Commissioning cycle of right-hand wheels B, D and E if applica-
ble (if 6M ECU is being used) with control pressure
pressure
hold
pulse
decrease
Commissioning cycle of left-hand wheels A, C and F if applicable
(if 6M ECU is being used) with control pressure
If the ECU detects a speed on more
than one wheel, the display will show
'---'. In this case, the functional test can-
not be initiated as the Compact Tester
would not know which modulator to ad-
dress. A speed of more than 4 k.p.h.
must have been measured to allow the
modulators to be actuated. When the
wheel which had previously been turned
is once again stationary, the appropriate
modulator is actuated:
DIF valve which may have been in-
stalled is actuated during the pulse pro-
gramme. If ABS-D is being used, this
happens during the whole of the pro-
gramme run; with ABS-C only during
the holding phase.
After successful functional testing, the
system is operable.
GB
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