Technical Tips; Engine Control - Yamaha WaveRunner FX SHO Service Manual

GEN
INFO

Technical tips

Technical tips

Engine control

The ECM controls ignition timing and fuel injection with information received from the sensors and
switches installed on the engine and on the basis of the 3D map saved in the ECM.
The following sensors and switches are used for the engine control.
APS, steering sensor, cam position sensor, engine temperature sensor, TPS, pickup coil, intake air
temperature sensor, intake air pressure sensor, knock sensor, thermo sensor, slant detection
switch, thermoswitch, oil pressure switch, engine stop switch, engine start switch, "NO-WAKE
MODE" switch, right handlebar switch ("SET," up, and down), and reverse sensor.
APS
Steering sensor
Cam position sensor
Engine temperature sensor
TPS
Pickup coil
Intake air temperature sensor
Intake air pressure sensor
Knock sensor
Thermo sensor
Slant detection switch
Thermoswitch
Oil pressure switch
Engine stop switch
Engine start switch
"NO-WAKE MODE" switch
"SET" switch
Up switch
Down switch
Reverse sensor
Yamaha Security System
ECM
(Electronic
control module)
1-42
E
Fuel injectors
Ignition coils
Multifunction meter
YDIS
Fuel pump relay
Main relay
Throttle body assembly
1
2
3
4
5
6
7
8
9