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REV1297NB R
TU1.P65
Page 2
The RTU is a state of the art electronic remote throttle designed for fire apparatus
equipped with the Cummins CELECT and electronic engine control
system. This includes the M11, N14 and L10 series engines. The RTU is connected
to the CELECT or through the J1922 data link via a twisted pair cable.
This arrangement allowes the MP ( master processor ) of the RTU to communicate
with the ECM (electronic control module) of the engine constantly. The RTU can be
used to vary the engine speed through use of the "INCREASE" and "DECREASE"
pushbuttons. A "PRESET" switch allows an operator to quicly bring the engine RPM
to a predetermined value with one press of a button.
An optional high idle kit (PRO-38H) may be purchased that plugs directly into the
RTU that allows engine RPM to be brought to a preselected RPM value through a
toggle switch. Wiring for this option can be found in Fig 7 of this manual.
Introduction:
RTU
Remote Throttle