Section 04 FUEL SYSTEM
Subsection 01 (INTELLIGENT THROTTLE CONTROL (iTC))
INTELLIGENT THROTTLE CONTROL
(iTC)
SERVICE TOOLS
Description Part Number Page
DIAGNOSTIC HARNESS ..................... .............................. ............ 529 036 384 ........................................... 85
FLUKE 115 MULTIMETER ............... ............................................. 529 035 868 ........................................... 86
GENERAL
SYSTEM DESCRIPTION
Some functions or features described in this sec-
tion may not apply to every PWC model, or may
be available as an option.
The iTC is an electronic throttle control system
that includes a cableless throttle control located
on the RH side of handlebar, an electric throttle ac-
tuator (ETA) located on the throttle body and the
engine control module (ECM). The iTC is often re-
ferred to as a "throttle by wire" system.
219100893-020-001_a
1. Throttle lever
2. Throttle acc
elerator sensor (TAS)
smr2016-026-001
The throttle lever operates the throttle accelera-
tor sensor (TAS). It is a double output hall effect
sensor. The redundancy is used for security pur-
poses.
The throttle actuator (ETA) is a DC motor on the
throttle body that regulates the throttle plate via a
drive gear. Pulse width modulation (PWM) is used
to control the motor. In the throttle body, there is
a double throttle position sensor (TPS). The redun-
dancy is used for security purposes. The TPS is
a potentiometer that supplies the ECM t he actual
angle position of the throttle plate.
According to the torque demand from the TAS,
the ECM powers the ETA motor to rotate towards
open or close the throttle plate. When the ECM
detects through the TPS that the throttle plate has
reached the targeted opening, the ECM stops the
throttle actuator.
The iTC allows the throttle actuator to be moved ir-
respective of the accelerator s ensor position since
it is not directly linked by a throttle cable.
While the throttle lever might be fully pulled in and
held,theECMcouldclosethethrottleplatein-
stead of opening it if the iBR lever were pulled
in. Then, the ECM could open the throttle plate
to accelerate the engine to increase the braking
effect. These different throttle plate movements
could be achieved while the throttle lever was still
fully pulled in. This is one of the great flexibility of
the iTC.
The use of the iTC allows the following additional
engine modes of operation.
Touring Mode
Touring mode allows the operator to choose for
progressive throttle response a t certain engine
speed.
Available engine power and acceleration is re-
duced when accelerating from a complete stop
and when operating in the low engine power
range under certain conditions.
219100963-011 79
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