PEC017
5/3/2018
Page
25
of
105
8.0
Cruise Control (CC)
Overview
The Cruise Control (CC) functionality allows the driver to set a target vehicle speed
and then adjust it within programmable limits. This allows the driver to adapt to
changing vehicle speed requirements. For example, the driver can increase or
decrease speed by briefly pressing or pressing and holding the Cruise Control
switches on the dashboard or steering wheel. The vehicle must be within the
programmed limits to activate and maintain Cruise Control.
The Cruise Control module allows a fleet owner to set preprogrammed limits in order
to enhance overall operating economy. CC is a standard feature of the engine, and
the default CC settings are useful for a majority of applications. Before changing the
default parameters, it is strongly recommended to consult the customer and/or body
builder to review the Cruise Control options.
Standard Feature
Cruise Control
Cruise Control ON/OFF switch
Set/Accel switch
Resume/Decel switch
CC regulates engine torque to maintain the desired vehicle speed. CC ON/OFF,
Set/Accel, and Resume/Decel are in-cab switches that allow the driver to operate
CC.
The CC ON/OFF switch allows the driver to control the vehicle speed if the switch is
in the ON position. When the switch is in the OFF position, CC is deactivated and the
engine will not automatically maintain an driver-desired vehicle speed.
The Set/Accel switch allows the driver to activate CC when the CC is ON, which
assigns the current vehicle speed as the Cruise Control target speed. The vehicle
speed must be at or above
Minimum Speed to Enable Cruise Control
) to
activate cruise control. While CC is active, the driver is free from having to control the
vehicle speed using the accelerator pedal. While CC is actively controlling vehicle
speed, briefly pressing the Set/Accel switch will cause the vehicle speed to increase
by the value of
Vehicle Speed Increase w/Set/Accel (
. While CC is actively
controlling vehicle speed, and the Set/Accel switch is pressed and held, the vehicle
will accelerate until the switch is released or the
Maximum Cruise Control Target
Speed (
is reached.
While Cruise Control is ON, the Resume/Decel switch allows the driver to activate
CC and resume maintaining a previously set Cruise Control vehicle speed. The
stored target vehicle speed is reset with an ignition key cycle. While CC is actively
controlling vehicle speed, briefly pressing the Resume/Decel switch will cause the
vehicle speed to decrease by the value of
Vehicle Speed Decrease w/Res/Decel
. While CC is actively controlling vehicle speed, and the Resume/Decel switch
is pressed and held, the vehicle will decelerate until the switch is released or the
Minimum Cruise Control Target Speed
is reached. If the vehicle speed falls
below
Minimum Speed to Disable Cruise Control (
, then CC will become
inactive.
