Sea-doo GTX Limited iS 255 2009, Shop Manual

Page: 308 / 555

Section 05 ELECTRICAL SYSTEM
Subsection 02 (POWER DISTRIBUTION)
smr2009-027-010_b
FUSE BOX 2 — BUS BAR IDENTIFICATION
1. 12 Vdc from battery
2. 12 Vdc from battery
3. CAN LO
4. CAN HI
5. Ground bus-bar
The power relay in FB2 is connected directly to
one of two 12 Vdc bus bars in FB2. When the
START/STOP button is pressed, it completes a
12 Vdc circuit to wake up the ECM, which in turn
completes the power relay ground circuit.
smr2009-027-010_c
1. Power relay
When the power relay closes, it applies 12 Vdc
to a bus bar located in fuse box 1 (FB1) through
terminal D6, which in turn distributes power to
the other 12 Vdc bus-bar and the remainder of the
fused circuits.
Terminal D4 of FB1 then supplies the main ECM
power through a 15 A fuse in FB2.
smr2009-027-011_a
FUSE BOX 1 — BUS BAR IDENTIFICATION
1. Primary switched power
2. Secondary switched power
If the electrical system is energized and the en-
gine is not started, the ECM will open the power
relay ground circuit to shut off power after ap-
proximately 3 minutes, unless the START button
is pressed again.
When the power relay open, it isolates the bat-
tery from the electrical components, including
the ECM, therefore preventing excessive battery
drain.
The only current drain on the battery when power
is switched off by the ECM is for the GPS in the
information center. It receives power through pin
1 of the information center (not illustrated). This is
used to maintain the GPS memory of the satellite
locations for approximately two hours.
Electrical System Activation
1. Press the START/STOP button to energize the
electrical system.
2. Install the safety lanyard (D.E.S.S. key) on its
post to maintain the Information Center active
when testing procedures require it.
Installing the D.E.S.S. key without pressing the
START/STOP button will not turn on electrical
power.
Pressing the START button without the D.E.S.S.
key installed on its post will turn on electrical
power without starting the engine; the informa-
tion center will cycle through a self-test function
and shut off its display after a few seconds. How-
ever, the electrical system will stay powered up
for approximately three minutes after the START
button was depressed.
NOTE: If the START/STOP button is pressed and
held without the D.E.S.S. key installed, the infor-
mation center will stay on as long as the START
button is held without cranking the engine.
smr2009-049
285