PREVOST H3-45 VIP Owner's Manual page 179

The telltale panel indicator illuminates for 3
seconds when the ignition switch is turned ON to
check the display
communication between the display and the
vehicle multiplex system. This confirms the
communication between the TPMS display and
CECM.
Setting The On-Screen TPMS
Set Wheel ID
l
Learn Wheel ID
l
This menu allows learning new wheel sensors ID.
The user can learn only one wheel, several wheels
or all wheels of the vehicle. The sequence
automatically jumps to the next wheel such that a
user can initiate all wheels without having to come
back to the display between each wheel.
The display uses a pressure change as the criteria
to recognize which wheel sensor the operator
wants to get assigned to a given location. The
amount of pressure change required is established
at 2 PSI.
A pressure change of about 3 PSI is needed to
wake up a sensor and then an extra amount of
pressure change of 2 PSI is needed to trigger the
display. The operator has to create a pressure
change by at least 6 PSI and then wait for the
display to recognize the pressure change. The
wait time corresponds to the sensor sampling rate.
When entering the menu, the axle 1, wheel 1 is
selected by default as a starting point for the
learning. The user can select another axle with +/-
, move the cursor to the wheel number with the
operation and the
PA-1619 Owner's Manual H3-45 VIP
Safety Features and Equipment 7-5
right arrow and select another wheel with the +/- or
move the cursor down to the start learning button.
After the start learning button is selected, the
display stores the first transmission it gets from
each sensor ID into the "initial pressure" for that
sensor ID. Then it compares each subsequent
pressure received for that sensor ID with the initial
one and when the comparison shows a delta
pressure exceeding the defined level required, this
sensor ID is assigned to the selected tire location.
Once a wheel ID has been assigned, the display
increments the number of wheels done and it
moves to the next axle/wheel in the sequence,
waiting for another sensor to come up with a
pressure change. Within one learning session, the
display remembers which sensor has been
assigned and it will not assign it twice.
The sequence increments the display of the next
wheel on the same axle, counting wheels from left
to right, and then moves to the next axle, counting
axles from front to rear.
It activates the next wheel parameter each time a
wheel is done. This setting is integrated with the
vehicle electronic, activating an audible signal on
the vehicle, thus providing feedback to the user
that he can move on to the next wheel.
The spare tire can be done by selecting the
axle/wheel "spare" which is internally encoded to
15:1.