Yamaha YZ450F Fahrer- Und Wartungshandbuch Seite 596

TPS (THROTTLE POSITION SENSOR) SYSTEM
1
3. Inspect:
TPS REPLACEMENT AND ADJUSTMENT
1. Remove:
2
2. Remove:
1
NOTE:
Loosen the screw (TPS) using the T25 bit.
3. Replace:
4. Install:
b a
NOTE:
• Align the slot a in the TPS with the projec-
2
tion b on the carburetor.
• Temporarily tighten the screw (TPS).
5. Install:
6 - 9
• TPS coil variable resistance
Check that the resistance in increased as
the throttle grip is moved from the full
close position to the full open position.
Out of specification → Replace.
Tester (+) lead → Yellow lead 1
Tester (–) lead → Black lead 2
TPS coil variable
resistance
Full closed Full opened
0 ~ 2 kΩ 4 ~ 6 kΩ
at 20 °C at 20 °C
(68 °F)
• TPS coupler
• Carburetor
• Screw (TPS) 1
• TPS 2
• TPS
• TPS 1
• Screw (TPS) 2
• Carburetor
• TPS coupler
– +
ELEC
Tester selec-
tor position
kΩ × 1
(68 °F)