2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 313Get this manual
Control system
Cam position sensor
1Measure: Cam position sensor input voltage Out of specification Check the wiring harnessMeasurement steps: 1Disconnect the cam position sensor coupler 12Push the unlock button, and then measure the input voltage at the cam position sensor coupler terminals (wiring harness end)Cam position sensor input voltage (reference data): Orange (O) Blackorange (BO) 4.755.25 V