RAM Truck 2014, Owner'S Manual

Page: 238 / 330

The DEF injection system consists of the following com-
ponents:
•
DEF tank
•
DEF pump
•
DEF injector
•
Electronically-heated DEF lines
•
DEF control module
•
NOx sensors
•
NH3 sensor
•
Temperature sensors
•
SCR catalyst
The DEF injection system and SCR catalyst enable the
achievement of diesel emissions requirements; while
maintaining outstanding fuel economy, drivability,
torque and power ratings.
Refer to “Electronic Vehicle Information Center
(EVIC)” in “Understanding Your Instrument Panel” for
system messages and warnings.
NOTE:
•
Your vehicle is equipped with a DEF injection system.
You may occasionally hear an audible clicking noise.
This is normal operation.
•
The DEF pump will run for a period of time after
engine shutdown to purge the DEF system. This is
normal operation.
236 STARTING AND OPERATING