Yamaha WaveRunner GP1300R, Supplementary Service Manual

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E
– +
ELEC
INDICATION SYSTEM
Speedometer display
1. Check:
• Speedometer display
Does not display
→
Measure the speed
sensor output voltage and pulses.
2. Measure:
• Speed sensor output voltage and pulses
Out of specification
→
Replace the
speed sensor.
Within specification
→
Replace the mul-
tifunction meter.
Speed sensor output voltage
(dependant on the paddle wheel
position):
Less than 400 mV
More than 11.6 V
Output pulse:
2 pulses/1 full turn
Measurement steps:
• Connect a 12 volt battery to the white
three-pin connector (between the red/yel-
low and black/yellow leads).
• Rotate the paddle wheel by hand and
measure the voltage between the yellow
and black/yellow leads.
NOTE:
As the paddle wheel is rotated, a square-
wave voltage signal
a
is produced.
• Two pulses occur every time the paddle
wheel makes one full turn.
Tachometer display
1. Check:
• Tachometer display
Does not display
→
Check the engine
speed using the “Engine monitor” of the
Yamaha Diagnostic System.
If there is no malfunction, replace the
multifunction meter.