BMW Motorrad S 1000RR 2013, Rider'S Manual

Page: 116 / 200

Electronic engine
management with
BMW Motorrad DTC
with Dynamic Traction Control
(DTC)
OE
How does DTC work?
The BMW Motorrad DTC com-
pares the speed of rotation of the
front wheel and the rear wheel.
The differential is used to com-
pute slip as a measure of the
reserves of stability available at
the rear wheel. If slip exceeds a
certain limit, the engine control
intervenes and adapts the engine
torque accordingly.
WARNING
Risky riding.
Risk of accident despite DTC.
Invariably, it remains the rider's
responsibility to adapt riding
style to riding conditions.
Do not take risks that would
negate the additional safety
offered by this system.
Special situations
In accordance with the laws of
physics, the ability to accelerate
is restricted more and more as
the angle of heel increases. Con-
sequently, there can be a per-
ceptible reduction in acceleration
out of very tight bends.
The speeds of the front and rear
wheels are compared and the
angle of heel taken into account
as one means of detecting the
rear wheel's incipient tendency to
spin or slip sideways. If the elec-
tronic processor receives values
that it considers implausible over
a lengthy period, a dummy value
is used for the angle of heel or
the DTC function is switched
off. Under these circumstances,
the indicator for a DTC fault is
displayed. Self-diagnosis has to
complete before fault messages
can be issued.
The BMW Motorrad DTC can
shut down automatically under
the exceptional riding conditions
outlined below.
Exceptional riding
conditions:
Riding for a lengthy period with
the front wheel lifted off the
ground (wheelie) and DTC de-
activated.
Rear wheel rotating with the
vehicle held stationary by ap-
plying the front brake (burn-
out).
Heating up with the motorcycle
on an auxiliary stand, in neutral
or with a gear engaged.
If the coding plug for the SLICK
mode is not inserted, you can
reactivate DTC by switching the
ignition off and then on again and
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z Engineering details