Yamaha WaveRunner FX SHO Service Manual page 306

– +
ELEC
1
Control system
È
É
1. Check:
• Throttle valve opening
• TPS output voltage
Out of specification → Measure the TPS
input voltage.
Checking steps:
NOTE:
When checking the TPS using the YDIS, do
not start the engine.
1. Connect a computer to the watercraft and
use the YDIS to display "Throttle position
sensor 1," "Throttle valve opening," and
"Throttle position sensor 2."
NOTE:
TPS 1 and TPS 2 are components of the elec-
tronic throttle valve, which cannot be disas-
sembled.
2. Squeeze the throttle lever slowly and
check that the displayed throttle valve
b
opening increases.
3. Check that the APS pulley stopper a con-
tacts the fully closed stopper b when the
throttle lever 1 is at the fully closed posi-
a
tion È.
NOTE:
To adjust the throttle cable, refer to "Throttle
lever free play check and adjustment" in Chap-
ter 3.
4. Push the unlock button, and then check
the TPS 1 output voltage and throttle valve
opening angle at the fully closed position
È.
TPS 1 output voltage with throttle
lever fully closed:
0.6–0.9 V
Throttle valve opening angle with
throttle lever fully closed:
2.0–8.0 °
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