Electronic Engine Manage; Dtc - BMW S 1000 RR Rider's Manual

Electronic engine
management with BMW
Motorrad DTC
with BMW Motorrad Race ABS
and 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 electronic engine
management system intervenes,
adapting engine torque accord-
ingly.
Even DTC is constrained
by the laws of physics. In-
variably, the rider bears respons-
ibility for assessing road and
traffic conditions and adopting his
or her style of riding accordingly.
Do not take risks that would neg-
ate 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 shows.
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
motorcycle held stationary by
applying 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
accelerating to a speed in excess
of 5 km/h.
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