Sea-doo GTX Limited iS 255 2009, Shop Manual

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Section 06 STEERING AND PROPULSION
Subsection 02 (iBR AND VTS)
7. Install remaining parts in the reverse order of
removal, refer to appropriate procedure in this
subsection.
Models With Plastic Retaining Tabs
on Fitting Plate
NOTE: Installation is the same as the model with
metal retainer except for the following.
1. Insert the fitting plate through the outer plate.
2. Push the fitting plate in until it bottoms out and
the retaining tabs (x2) snap securely into posi-
tion.
NOTICE
Ensure both tabs are properly locked
to secure fitting plate to the support plate. If
fitting plate is not properly locked in position,
water may seep into the bilge.
smr2009-043-008_b
1. Top fitting plate retaining tab (bottom tab similar)
3. Install remaining parts in the reverse order of
removal, refer to appropriate procedure in this
subsection.
VTS CONTROL BUTTON
VTS Button Overview
The VTS button contain a series of 4 diodes for the
UP and DOWN arrow switches. Refer to
WIRING
DIAGRAM
.
The center wire to the switches (pin C), is com-
mon for iS button and VTS button (somewhat like
a ground wire). The other two wires (pins A and
B), act as signal wires for each set of switches to
the gauge. They actually each form one branch of
an electronic circuit within the gauge.
Each diode (in circuit) drops a nominal 0.6 Vdc
when conducting electricity. If the circuit current
passes through all four diodes (say VTS switch
open), a drop of 2.4 Vdc would be measured
across the 4 the diodes (pin A to pin C). This 2.4
Vdc at pin B tells the gauge the VTS switch is
open.
If the VTS UP button is pressed, 2 diodes are by-
passed by the closed switch. The remaining two
diodes in the circuit drop 1.2 Vdc (at pin A).
If the VTS DOWN button is pressed, 1 diode is by-
passedby the closed switch. The remaining three
diodes in the circuit drop 1.8 Vdc (at pin A).
The gauge senses these voltages through pin 13
of its connector, and interprets them as signals
that tell it which is activated (VTS UP or VTS
DOWN).
Since the command generated by the closure of
a VTS switch concerns the VTS module, a circuit
within the gauge will translate it to CAN proto-
col and transmit it through the CAN bus. The VTS
module will react to the command, carry out the
function, and transmit the result back through the
CAN bus.
The gauge will use the signals from the switches
and the transmitted information from the other
modules, convert them to an indication, and
cancel the command signal it sent out once the
function has been carried out.
NOTE: The above stated voltages vary slightly de-
pending on the actual voltage applied to the circuit
and the current flow through the diodes. When
using a Fluke 115 multimeter for testing in diode
test mode, the voltage and current applied by the
multimeter are lower than in circuit. The quality
of probe contact, the actual probes and leads, and
the precision of the meter calibration will all affect
the results, which will most likely be slightly lower
than nominal values stated.
VTS Control Button Functional Test
Using iBR OVERRIDE Function
1. Press the START/STOP button.
2. Install D.E.S.S. key to power up the electrical
system.
NOTE: Electrical power will shut off after approx-
imately 3 minutes. Briefly press the START/STOP
button to reactivate the electrical system when re-
quired.
3. Activate the iBR override function, refer to
SYS-
TEM DESCRIPTION (iBR
) in this subsection.
4. Press and hold the VTS DOWN arrow button.
The iBR gate and steering nozzle will move
downwards together up to the full VTS down
position. The iBR gate will then continue mov-
ing to the full reverse/braking position alone.
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