Yamaha YZF-R1S Service Manual - page 387
7-43
THROTTLE BODIES
FI
NOTE:
CHECKING AND ADJUSTING THE
SUB-THROTTLE POSITION SENSOR
1. Check:
Ssub-throttle position sensor
a. Disconnect the sub-throttle position sensor
coupler.
b. Remove the sub-throttle position sensor
from the sub-throttle servo motor.
c. Connect the pocket tester (
Ω 1k) to the
sub-throttle position sensor.
Positive tester probe
! blue terminal
1
Negative tester probe
!
black / blue terminal
2
d. Measure the maximum sub-throttle position
sensor resistance.
Out of specification
! Replace the sub-
throttle position sensor.
Maximum sub-throttle position
sensor resistance
4
X 6 kΩ at 20_C (68_F)
(blue – black / blue)
e. Connect the pocket tester (
Ω 1k) to the
sub-throttle position sensor.
Positive tester probe
!
green / yellow terminal
3
Negative tester probe
!
black / blue terminal
2
f. While slowly opening the sub-throttle worm
nut, check that the sub-throttle position sen-
sor resistance is within the specified range.
The resistance does not change or it changes
abruptly
! Replace the sub-throttle position
sensor.
Check mainly that the resistance changes grad-
ually when turning the sub-throttle worm nut,
since the readings (from closed to wide-open
sub-throttle) may differ slightly from those spe-
cified.
Sub-throttle position sensor
resistance
0
X 6 kΩ at 20_C (68_F)
(black / blue – green / yellow)