Throttle Position Sensor Replacement - Honda CRF450X 2005 Service Manual

FUEL SYSTEM
THROTTLE POSITION SENSOR
REPLACEMENT
Remove the carburetor from the engine (page 6-11).
Remove the clamp, tone screw and throttle position
sensor.
In sta ll the throttle position sensor by aligning the
CLAM P
tabs of the throttle position sensor with the flat side
f'o".l~_
of the shaft es shown.
6-26
'05, '06:
Loosely install the screw.
After '06:
Loosely install the bolt.
Measure the resistance between the Blue and Black
wire terminals of the sensor side connector.
STANDARD: 4 - 6 kO (20
c
C/ 68"F)
Calculate the throttle position sensor resistance at
idle speed using the equation below.
Ax (O.13-0.15j""B
A: Blue and Black wire terminals resistance
B: Throttle position sensor resistance at idle speed
(Ex.)
If the Blue and Black wire terminals resistance is 5
kfl, then the thronle position sensor (YeJlow - Black)
resistance at idle speed is:
5 kfl x (0.13 - 0.15) '" 650 - 750 n
'05, '06 shown :
••
THROTIlE POSITION SENSOR
3P CONNECTOR
•