Checking And Adjusting The Throttle Position Sensor - Yamaha 2002 TDM900 Service Manual

FUEL INJECTION SYSTEM
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:
S throttle position sensor
(installed on the throttle body)
a. Disconnect the throttle position sensor cou-
pler from the throttle position sensor.
b. Connect the pocket tester (Ω
throttle position sensor.
Tester positive probe ! blue terminal 1
Tester negative tester probe !
c. Measure the maximum throttle position sen-
sor resistance.
Out of specification ! Replace the throttle
position sensor.
Maximum throttle position sensor
resistance
d. Connect the pocket tester (Ω
throttle position sensor.
Tester positive probe ! yellow terminal 3
Tester negative probe !
e. While slowly opening the throttle, check that
the throttle position sensor resistance is with-
in the specified range.
NOTE:
Check mainly that the resistance changes grad-
ually when turning the throttle, since the read-
ings (from closed to wide-open throttle) may dif-
fer slightly from those specified.
Out of specification or the resistance
changes abruptly ! Go to step 2 below.
8-57
ELEC
black/blue terminal 2
4.0 X 6.0 kΩ at 20_C
(blue – black/blue)
black/blue terminal 2
1k) to the
1k) to the