Mack CSM 2010, Operator'S Handbook Manual

Page: 106 / 232

98 OPERATION
To activate the Pow ™ Engine Brake, utilize the following dash switches:
Control Switch:
The left most switch is the Pow
ON-OFF
or control switch.
Depress the engine brake icon to illuminate the switch and activate the Pow engine
brake functions. Once the Pow activates the
PowerLeash Speed +... screen
displays in the Co-Pilot®.
Note: The Pow will not operate if the control switch is in the OFF position.
Note: An exception exists if the vehicle is equipped with a Bendix Active Cruise Control &
Collision Warning system. If the vehicle is equipped with these features the Bendix system
assumes all fueling and braking control when in active cruise control mode.
Mode Switch: The Pow Mode switch is used to select the type of engine brake
operation needed. The individual switch functions are as follows:
•
Latch Mode: Pressing LATCH activates the LATCH mode. In this mode the engine
brake activates whenever zero (0) pedal is applied. The LATCH mode will only function
with the cruise control disabled. Typically this mode is used to activate the brake every
time the throttle pedal is released. The Pow setting is automatically set at 100%
in LATCH mode.
•
Auto Mode: This is the normal and recommended mDRIVE driving mode for
Pow. The Auto mode can be used whether the vehicle is equipped with or
without cruise control. If the cruise control is engaged, Mack’s Cruise ’n Brake feature
will activate. If the cruise control is not engaged, the engine brake activation will depend
on the switch’s
SET - setting.
Anytime the Mode switch is in the center position, Pow is in Auto mode. Auto
mode allows the driver to control the vehicle’s downhill speed. The vehicle speed is
controlled without the need to manually adjust the braking effort or apply the service
brakes.