2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 23Get this manual
GEN INFO
Feature and benefit
Electronic control throttle valve (ETV) system
The flow chart shows typical ETV systemThe ETV system consists of throttle lever, throttle cable, an accelerator position sensor, electronic control throttle bodies, and an electronic control module (ECM)A throttle cable connects the throttle lever and the APSThe accelerator position sensor (APS) detects the changes in operation of the throttle lever and changes the output voltage of the APS accordinglyThis voltage is then transmitted from the APS to the ECMIn accordance with the voltage input from the APS, the ECM operates the DC motor, which is installed on the ETV, and sets the throttle valve to the opening angle that corresponds to the changes in operation of the throttle leverAt the same time, the throttle position sensor (TPS), which is located on the same axle, detects the changes in the opening angle of the throttle valve and outputs the information to the ECM for optimum operation