Yamaha WaveRunner FZR-GX1800 Service Manual page 254

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ELEC
Engine electrical components ...................................................................... 7-1
Electrical box.................................................................................................. 7-3
Electrical components ............................................................................... 7-3
Electrical box disassembly ........................................................................ 7-4
Fuse box disassembly ............................................................................... 7-6
Electrical analysis .......................................................................................... 7-8
Check using the YDIS ............................................................................... 7-8
Input voltage measurement ....................................................................... 7-9
Peak voltage measurement....................................................................... 7-9
Ignition system............................................................................................. 7-10
Ignition coil............................................................................................... 7-10
Pickup coil ............................................................................................... 7-13
Charging system .......................................................................................... 7-14
Stator coil................................................................................................. 7-14
Rectifier regulator .................................................................................... 7-16
Control system ............................................................................................. 7-18
Oil pressure switch .................................................................................. 7-18
Thermoswitch .......................................................................................... 7-19
Thermo sensor ........................................................................................ 7-21
Engine temperature sensor ..................................................................... 7-22
Intake air temperature sensor.................................................................. 7-23
Intake air pressure sensor ....................................................................... 7-25
Knock sensor........................................................................................... 7-26
Throttle position sensor ........................................................................... 7-26
Accelerator position sensor ..................................................................... 7-29
Electronic throttle valve relay................................................................... 7-33
Cam position sensor................................................................................ 7-34
Slant detection switch.............................................................................. 7-35
Steering sensor ....................................................................................... 7-36
Reverse sensor ....................................................................................... 7-37
ECM circuit .............................................................................................. 7-38
Earth plate ............................................................................................... 7-39
Electric bilge pump .................................................................................. 7-40
Fuel system .................................................................................................. 7-41
Fuel injector ............................................................................................. 7-41
Fuel pump module................................................................................... 7-42
Chapter 7
Electrical system
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