Vct Control - Yamaha F225F Service Manual

VCT control

In VCT control, the engine ECM determines the appropriate intake valve opening timing according
to the signals from the sensors. According to the engine operating conditions, the OCVs are oper-
ated and the VCT assemblies are advanced, retarded, or maintained in the current position to con-
trol the intake valve opening timing.
Pulser coil
Cam position sensor
(PORT EX)
Cam position sensor
(PORT IN)
Cam position sensor
(STBD IN)
TPS
LPS
Air pressure sensor
Engine temperature sensor
Electronic control system
Engine
ECM
OCV (PORT)
OCV (STBD)
2-10
0
1
2
3
4
5
6
7
8
9
10
A