Slant Detection Switch - Yamaha WaveRunner FX140 Service Manual

SLANT DETECTION SWITCH

A slant detection switch is installed inside the electric box.
If the watercraft overturns 180°, the ring inside the slant detection switch moves to turn the switch
on.
When the watercraft is overturned, the slant detection switch turns on and the ECM stops the
engine to protect the engine.
If engine speed is less than 3,000 r/min, the engine is turned off. However, if engine speed exceeds
3,000 r/min, the engine is not turned off to prevent improper operation of the watercraft as in rough
water condition or aggressive riding.
Normal operation
of watercraft
(No circuit continuity)
ECM
(Electronic control module)
Fig. 18
17
Slant detection
switch
Overturned watercraft
(Circuit continuity)