Yamaha RS90RK Service Manual page 612

CARBURETORS AND FUEL PUMP
THROTTLE POSITION SENSOR (T.P.S.)
INSPECTION AND ADJUSTMENT
NOTE:
Before adjusting the throttle position sensor, prop-
erly adjust the idle speed.
1. Inspect:
Inspection steps:
• Disconnect the throttle position sensor coupler.
• Connect the pocket tester (Ω × 1k) to the throt-
Positive tester probe → Blue 1
Negative tester probe → Black 2
• Check the throttle position sensor resistance.
• Connect the pocket tester (Ω × 1k) to the throt-
Positive tester probe → Yellow 3
Negative tester probe → Black 2
• While slowly pushing the throttle check the
7-11
• Throttle position sensor
tle position sensor coupler.
Throttle position sensor resistance
"R ":
1
4 ~ 6 kΩ at 20 °C (68 °F)
(Blue – Black)
Out of specification → Replace the throttle posi-
tion sensor.
tle position sensor coupler.
throttle position sensor resistance.
Throttle position sensor resistance
"R ":
2
0 ~ 4 kΩ at 20 °C (68 °F)
(Yellow – Black)
Out of specification → Replace the throttle posi-
tion sensor.
CARB