Throttle Override System (T.o.r.s.) - Yamaha RS90GTZ Service Manual

IGNITION SYSTEM

THROTTLE OVERRIDE SYSTEM (T.O.R.S.)

WARNING
• If the T.O.R.S. is activated, make sure that
the cause of the malfunction has been
corrected and that the engine can be oper-
ated without a problem before restarting
the engine. Continuing to operate with a
malfunction could cause loss of control or
damage.
If the throttle valves or throttle cable malfunc-
tions during operation, the T.O.R.S. will be acti-
vated when the throttle lever is released.
The T.O.R.S. is designed to override the fuel
injection and limit the engine speed to less
than the clutch engagement speed if the throt-
tle valves fail to return to the idle position when
the throttle lever is released.
Engagement speed:
RS90GTZ/RS90LTGTZ
3,100 ~ 3,500 r/min
RST90GTZ
2,900 ~ 3,300 r/min
Mode
Idling/
Item starting
Throttle switch
Throttle position
Closed
sensor
Engine
T.O.R.S.
properly
Idling/starting
Running
Trouble
Throttle position sensor (throttle valve position)
Throttle switch
Throttle cable
On
Off
Open
Closed
8-10
ELEC
Running Trouble
Off On Off
Open Open
Engine
T.O.R.S. will
runs runs
be activated
properly