SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 304 / 377

ELEC
– +
6P23H11
Electrical system
Checking the electrical component.............................................................. 8-1
Checking using the YDIS........................................................................... 8-1
Measuring the peak voltage ...................................................................... 8-1
Electrical component..................................................................................... 8-3
Port view.................................................................................................... 8-3
Starboard view........................................................................................... 8-4
Fuse holder................................................................................................ 8-5
Aft view ...................................................................................................... 8-6
Top view .................................................................................................... 8-7
Wiring harness routing.................................................................................. 8-8
Port view.................................................................................................... 8-8
Starboard view......................................................................................... 8-10
Aft view .................................................................................................... 8-13
Top view .................................................................................................. 8-14
Ignition and ignition control system .......................................................... 8-15
Checking the ignition spark ..................................................................... 8-15
Checking the ignition coil input voltage ................................................... 8-15
Checking the crank position sensor......................................................... 8-15
Checking the crank position sensor air gap............................................. 8-16
Checking the intake air temperature sensor............................................ 8-16
Checking the intake air pressure sensor ................................................. 8-17
Checking the engine temperature sensor................................................ 8-18
Checking the thermoswitch ..................................................................... 8-18
Checking the shift cut switch ................................................................... 8-19
Checking the neutral switch..................................................................... 8-19
Checking the knock sensor ..................................................................... 8-20
Checking the engine start switch............................................................. 8-20
Checking the engine stop lanyard switch ................................................ 8-21
ECM and electronic throttle valve control system.................................... 8-21
Checking the main relay and electronic throttle valve relay .................... 8-21
Checking the ECM circuit ........................................................................ 8-22
Checking the electronic throttle valve and TPS circuit ............................ 8-23
Checking the electronic throttle valve motor............................................ 8-25
Checking the accelerator position sensor circuit ..................................... 8-25
Checking the accelerator position sensor................................................ 8-26
Variable camshaft timing control system .................................................. 8-28
Checking the cam position sensor........................................................... 8-28
Checking the oil control valve.................................................................. 8-30