BOMBARDIER SEA-DOO SPX 5838 1998 Shop Manual page 253

Section 08 ELECTRICAL SYSTEM
Subsection 05 (INSTRUMENTS AND ACCESSORIES)
Tachometer
GTX Limited
3
RPM
2
1
Bombardier
0
F07H04A
The PURPLE wire is the 12 Vdc power source of
the tachometer.
The BLACK wire is the ground.
The GRAY wire is the pulse signal from the multi-
purpose electronic module (MPEM).
Speed Sensor
GSX Limited, XP Limited, GTI and
GTX Limited
The speedometer gives a reading through a
speed sensor. Speed sensor is installed on riding
plate. It works with the water flow which turns a
magnetic paddle wheel that triggers an electronic
pick-up that in turn sends a speed signal to the
speedometer.
The paddle wheel is protected by the pick-up
housing.
F01H3VA
1. Pick-up housing
2. Paddle wheel
08-05-2
4
5
6
x 1000
7
8
R
1
2
To check if the speed sensor is operational, dis-
connect the speed sensor connector housing
from inside bilge.
Using an appropriate terminal remover (Snap-on
TT600-4), remove the PURPLE/YELLOW and
BLACK/ORANGE wires from the tab housing of
the speed sensor.
Reconnect the PURPLE/YELLOW and BLACK/
ORANGE wires in the receptacle housing.
Connect the positive probe of a multimeter to
speed sensor PURPLE/YELLOW wire and the
negative probe to speed sensor BLACK/ORANGE
wire.
With the safety lanyard removed, depress the start/
stop button to activate the MPEM timer.
Slowly rotate the paddle wheel. Every 1/8 turn,
the observed voltage should fluctuate between
5.5 and 8.5 Vdc.
Speedometer
GSX Limited, XP Limited, GTI and
GTX Limited
30
20
MPH
10
0
F07H05A
The PURPLE wire is the 12 Vdc power source of
the speedometer.
The BLACK wire is the ground.
The PURPLE/YELLOW wire is the pulse signal
from the speed sensor.
40
50
60
70
R