2009 Yamaha F40 Outboard Service Manual, Page 111Get this manual
Engine control units and components Wiring harness continuity: aTerminal 1bTerminal aTerminal 2bTerminal 26 aTerminal 3bTerminal 23 aTerminal 4bTerminal 15 aTerminal 5bTerminal 16 aTerminal 7bTerminal aTerminal 8bTerminal 24 aTerminal 9bTerminal 32 aTerminal 10bTerminal 33 6Connect the engine ECM coupler and the throttle body coupler aA Tiller handle model Remote control model TPS output voltage and throttle valve opening angle (reference data): Fully closed Fully open Output 0.674 3.680 voltage Opening 0.1 75.3 angle
Checking the ISC
The ISC is component of the throttle body which cannot be disassembled1Check the operation of the ISC using the YDIS "Stationary test" and check the operating sound2Start the engine, and then check the engine speed increases using the YDIS "Active test