Yamaha WaveRunner FX Cruiser SHO, Service Manual

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Engine overheat warning indicator
1. Check:
• Engine overheat warning indicator
Does not come on
→
Check the “ Diag-
nosis record ” of the YDIS.
Checking steps:
1. Disconnect the thermoswitch coupler
1
.
2. Connect the jumper lead
2
to the ther-
moswitch coupler terminals (wiring har-
ness end).
3. Start the engine and operate it at trolling
speed for about 2 minutes.
4. Check that the “ WARNING ” indicator light
3
and the engine overheat warning indi-
cator
4
blink, and then come on, and the
buzzer begins to sound intermittently, and
then it sounds continuously.
5. If the light and indicator do not blink, check
the “ Diagnosis record ” of the YDIS. If a
diagnosis record is available and it is
caused by the checking steps, replace the
multifunction meter.
1
B/O
P
2
3
4
Buzzer
1. Measure:
• Buzzer input voltage
Out of specification
→
Check the wiring
harness.
Measurement steps:
1. Disconnect the buzzer coupler 1 .
2. Push the unlock button, and then measure
the input voltage at the buzzer coupler ter-
minals (wiring harness end).
Buzzer input voltage (reference data):
Blue/red (L/R) – Black/blue (B/L)
11.0 – 12.0 V
B/L L/R
1
Indication system