Bendix Commercial Vehicle Systems ACom Diagnostics V.5.9 - Manual (Page 18)

18
Figure 58
Sensor Sequence Test
This test verifi es the correct installation of the wheel
speed sensors. The tractor and trailer sensor sequence
test are different. The trailer sensor sequence test will
display order in which the wheels are to be rotated is
listed under the heading Prescribed Order. The current
prescribed order is, right (curbside), right additional (if
equipped), left additional (if equipped), left (roadside).
The second column displays the speed, which was read.
The third column shows the actual order in which wheel
speeds were read. The wheel speed must be greater
than 1.0 MPH to be considered a valid reading.
Trailer
Figure 59
The tractor sensor sequence test displays the order in
which the wheels are to be rotated, under the heading
Prescribed Order. The current prescribed order is: right
then left steer axle, drive axle and additional axle (if
equipped). The second column displays the speed,
which was read. The third column shows the actual
order in which wheel speeds were read. The wheel
speed must be above 1.0 MPH to be considered a valid
reading
Tractor
Figure 60
Pulse Modulator Test
This test verifi es whether the modulator(s) are installed
correctly. The tractor and trailer pulse modulator
sequence test are different. The trailer pulse modulator
test will display order in which the modulators will be
energized. The test energizes the modulator(s) in the
predefi ned order: right (curbside) and left (curbside)
if axle control, then right additional (if equipped) and
left additional (if equipped). The tester will validate a
correct response on the vehicle. At the completion of all
modulators being energized, the program will ask the
tester whether the modulator(s) responded correctly.
Trailer
Figure 61
The tractor pulse modulator test will test energizes the
modulator(s) in the predefi ned order, by axle: steer axle
right and left, drive axle right and left, then additional
axle right and left. The tester will validate a correct
response on the vehicle. At the completion of all
modulators being energized, the program will ask the
tester whether the modulator(s) responded correctly.
Tractor
Figure 62
Battery Voltage Test
This test verifi es the battery voltage in an unloaded
and loaded state (modulators energized). The lowest
detected voltage will be displayed after the tests are
fi nished. The tester is asked to confi rm the result of
the test.