Yamaha F75F - Page 83

0
1
2
3
4
5
6
7
8
9
1
0
A
Electrical system
Electrical component and wire harness routing ............. 5-1
Port............................................................................................. 5-1
Starboard.................................................................................... 5-3
Front ...........................................................................................
5-4
Fuse holder ................................................................................
5-5
Rear............................................................................................
5-6
Top .............................................................................................
5-7
Bottom cowling ...........................................................................
5-9
Tiller handle (tiller handle model)
............................................. 5-11
ECM circuit diagram......................................................... 5-13
ECM coupler layout
.......................................................... 5-15
Checking the electrical component
................................ 5-17
Using the YDIS......................................................................... 5-17
Measuring the peak voltage
..................................................... 5-17
Using the digital tester..............................................................
5-18
Engine control unit and component............................... 5-18
Checking the main relay........................................................... 5-18
Checking the engine ECM circuit
............................................. 5-18
Checking the TPS ....................................................................
5-19
Checking the ISC valve ............................................................
5-20
Checking the oil pressure switch
.............................................. 5-20
Checking the alert indicator (tiller handle model)
..................... 5-21
Checking the alert buzzer
......................................................... 5-21
Fuel control unit and component ................................... 5-22
Checking the water detection switch ........................................ 5-22
Checking the fuel injector
......................................................... 5-23
Checking the high-pressure fuel pump
..................................... 5-23
Checking the high-pressure fuel pump relay
............................ 5-24
Checking the vapor shut-off valve
............................................ 5-24
Charging unit and component ........................................ 5-25
Checking the lighting coil (stator assembly) ............................. 5-25
Checking the rectifier/regulator
................................................ 5-26
Checking the hour meter
.......................................................... 5-27