Checking And Adjusting The Throttle Position; Sensor - Yamaha MT-03 Service Manual

d. Connect the fuel pump coupler "4" and fuel
sender coupler "5" to the fuel pump.
Refer to "FUEL TANK" on page 7-1.
e. Set the main switch to "ON" and the engine
I
stop switch to " ".
f. Start the engine.
g. Measure the fuel pressure.
Fuel pressure
324 kPa (3.24 kg/cm
Out of specification
pump.
EAS00502
CHECKING AND ADJUSTING THE
THROTTLE POSITION SENSOR
NOTE:
Before adjusting the throttle position sensor,
the engine idling speed should be properly ad-
justed.
1. Check:
• Throttle position sensor
(removed from the throttle body)
a. Disconnect the throttle position sensor cou-
pler from the throttle position sensor.
b. Remove the throttle position sensor from the
throttle body.
c. Connect the pocket tester (Ω x 1k) to the
throttle position sensor.
• Positive tester probe
• Negative tester probe
terminal "2"
2 , 46.1 psi)
Replace the fuel
Terminal "1"
Blue Black/Blue
7-9
THROTTLE BODY ASSEMBLY
2
B/L
d. Measure the maximum throttle position sen-
sor resistance.
Out of specification
position sensor.
Maximum throttle position sensor
resistance
4.0-6.0 kΩ at 20 °C (68 °F)
(blue-black/blue)
e. Connect the pocket tester (Ω x 1k) to the
throttle position sensor.
• Positive tester probe
• Negative tester probe
terminal "2"
f. While slowly opening the throttle, check that
the throttle position sensor resistance is
within the specified range.
The resistance does not change or it
changes abruptly
sition sensor.
The slot is worn or broken
throttle position sensor.
1
3
Y L
Replace the throttle
Yellow terminal "3"
Black/Blue
Replace the throttle po-
Replace the