Yamaha F100B F100C Outboards Factory Service Manual, Page 310Get this manual
Electrical systems
Checking the oil pressure switch
1Connect the special service tool to the oil pressure switch2Slowly operate the special service tool
Throttle position sensor input voltage: Red (R) Orange (O) 5V Throttle position sensor output voltage: Pink (P) Orange (O) 0.485.25 NOTE: Make sure that the throttle position sensor output voltage is within specification when the throttle is fully closed and fully open
Checking the thermo sensor