Yamaha F200B, Service Manual

Page: 128 / 579

ELEC
Electrical system
Electrical component ......................................................... 5-1
Port............................................................................................. 5-1
Starboard.................................................................................... 5-2
Fuse holder ................................................................................ 5-3
Rear............................................................................................ 5-4
Top ............................................................................................. 5-5
Wiring harness routing ...................................................... 5-6
Port............................................................................................. 5-6
Starboard.................................................................................... 5-9
Rear.......................................................................................... 5-12
Top ........................................................................................... 5-15
Bottom cowling ......................................................................... 5-18
Circuit diagram ................................................................. 5-22
ECM coupler layout.......................................................... 5-24
Checking the electrical component................................ 5-26
Using the YDIS ......................................................................... 5-26
Measuring the peak voltage ..................................................... 5-26
Using the digital tester.............................................................. 5-27
Engine control system and component ......................... 5-27
Checking the main relay ........................................................... 5-27
Checking the engine ECM circuit ............................................. 5-28
Checking the APS .................................................................... 5-29
Checking the APS circuit .......................................................... 5-30
Checking the ETV and TPS ..................................................... 5-31
Checking the ETV motor relay ................................................. 5-32
Checking the ETV and TPS circuit ........................................... 5-33
Checking the cam position sensor ........................................... 5-34
Checking the OCV.................................................................... 5-37
Checking the oil pressure sensor ............................................. 5-39
Checking the water pressure sensor (optional) ........................ 5-40
Checking the speed sensor (optional) ...................................... 5-41
Fuel control unit and component ................................... 5-43
Checking the water detection switch ........................................ 5-43
Checking the fuel injector ......................................................... 5-44
Checking the low-pressure fuel pump and
high-pressure fuel pump........................................................... 5-46
Checking the high-pressure fuel pump relay ............................ 5-47
Checking the vapor shut-off valve ............................................ 5-48
Charging unit and component ........................................ 5-50