Checking The Throttle Position Sensor; Installing The Throttle Position Sensor; Checking The Idle Speed Control - Yamaha F90D Service Manual

FUEL
Checking the throttle position
sensor
1. Check the throttle position sensor output
voltage using the Yamaha Diagnostic
System. If the output voltage is out of
specification, replace the throttle posi-
tion sensor.
Throttle position sensor output
voltage at engine idle speed:
0.8–1.2 V

Installing the throttle position sensor

1. Install the throttle position sensor 1 in a
position where the output voltage is
within specification.
a
NOTE:
• If the throttle position sensor output voltage
is out of specification, reinstall the throttle
position sensor.
• Measure the throttle position sensor output
voltage using the Yamaha Diagnostic Sys-
tem.
• Do not turn the throttle stop screw a.
Throttle position sensor output
voltage at engine idle speed:
0.8–1.2 V

Checking the idle speed control

1. Check the operation of the idle speed
control using the Yamaha Diagnostic
System.
4-9
Fuel system
1
S6D84170
6D81G11