driver FORD SUPER DUTY 2015 3.G Diesel Supplement Manual

The powertrain and glow plug control
modules electronically control the glow
plug system. After you switch the ignition
on the glow plug control module
immediately energizes the glow plugs. The
glow plug control module using the engine
coolant temperature, barometric pressure
sensor and environmental temperature
sensor will determine how long the glow
plugs stay energized. The required time for
the glow plugs to be energized decreases
as the coolant temperature, barometric
pressure and environmental temperature
increase.
Glow Plug
Engine and secondary cooling system
The cooling system contains a primary
cooling loop to cool the engine and a
secondary cooling loop to cool the
transmission, charge air, and fuel. The
coolant serves three primary purposes: to
provide heat transfer, freeze point
protection, and corrosion protection using
additives.
Vehicles with diesel engines typically are
used to carry heavy loads and accumulate
mileage rapidly. These two factors may
cause the additives in the coolant to wear
out in a shorter time. For more information
about coolant additives and coolant
change intervals See Engine Coolant
Check (page 45). . Operating the engine
with insufficient coolant or coolant additive
can cause severe engine damage
Diesel Particulate Filter system
Your vehicle is equipped with a diesel
particulate filter in the exhaust system. The
diesel particulate filter reduces carbon
emissions by trapping exhaust particulates
(soot) before they reach the tailpipe. You
must properly maintain your diesel
particulate filter in order for it to function properly. Regeneration of the diesel
particulate filter occurs automatically
during operation above 30 mph (48 km/h)
and requires no actions from the driver. If
you do a lot of idling or stop and go driving,
pay attention to maintenance messages
that alert you when you need to drive to
clean the diesel particulate filter, or
perform operator commanded
regeneration. See
Emission Control
System (page 30).
Selective catalytic reduction system
Your vehicle is equipped with a selective
catalytic reduction system designed to
reduce emission levels of nitrogen oxides
from the exhaust of your diesel engine. This
system relies on the use of Diesel Exhaust
Fluid (DEF) that you must replenish at
certain intervals. Failure to maintain proper
DEF levels or if the DEF becomes
contaminated will result in vehicle speed
limitations or result in your vehicle entering
an idle-only mode. See
Selective
Catalytic Reduction System (page 21).
Speed control
If your vehicle speed goes outside a
predetermined range from the set speed,
the RSM (Resume) function will not reset
your vehicle speed. You will need to reset
your vehicle speed with the SET+ or SET-
button after reaching the desired speed
using the accelerator pedal.
Minor Troubleshooting Guide
If the engine won ’t crank WARNING
Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after
handling. 5
Super Duty (TFA) , enUSA Introduction

Look for a label on the fuel pump to
confirm the amount of biodiesel contained
in a diesel fuel. Biodiesel content is often
indicated with the letter B followed by the
percent of biodiesel in the fuel. For
example, B20 indicates a fuel containing
20% biodiesel. Ask the service station
attendant to confirm the biodiesel content
of a diesel fuel if you do not see a label on
the fuel pump.
Biodiesel fuels degrade more easily than
diesel fuels not containing biodiesel and
should not be stored in the fuel tank for
more than 1 month. If you plan to park or
store your vehicle for more than 1 month,
then you should empty your vehicle fuel
tank of biodiesel fuel. You should fill the
tank with a pure petroleum-based diesel
fuel and run your vehicle for a minimum of
30 minutes.
Note:
Degraded or oxidized biodiesel can
damage fuel system seals and plastics and
corrode steel parts.
During cold weather, if you have problems
operating on biodiesel, you may need to
use a diesel fuel with lower biodiesel
content, try another brand, or discontinue
the use of biodiesel.
Diesel Fuel Additives
It should not be necessary to add any
aftermarket additives to your fuel if you
use a high quality diesel fuel that conforms
to ASTM industry specifications.
Aftermarket additives can damage the fuel
injector system or engine.
Use Motorcraft® cetane booster or an
equivalent cetane booster additive if you
suspect fuel has low cetane. Use
Motorcraft® anti-gel & performance
improver or an equivalent additive if there
is fuel gelling. Do not use alcohol-based additives to
improve cetane quality, to prevent fuel
gelling or any other use. The use of alcohol
additives may result in damage to the fuel
injectors and system. See Technical
Specifications (page 57).
Your warranty may not cover repairs
needed to correct the effects of using an
aftermarket product that does not meet
Ford specifications in your fuel.
Note: Ultra Low Sulfur Diesel fuel is
designed to meet the emissions standards
for the 6.7L engine and is backward
compatible as well (for example, it can be
used in the 7.3L, 6.9L, 6.4L and 6.0L diesel
engines in Ford vehicles.
Fuel And Water Separator
Your vehicle is equipped with a diesel fuel
conditioner module located on the
frame-rail under the driver-side floorboard
near the transmission. You should drain water from the
module assembly whenever the
warning light comes on and the
message center directs you to drain the
water separator. This will occur when
approximately 0.32 pints (150 ml) of water
accumulates in the module. If you allow
the water level to exceed this level, the
water may pass through to the engine and
may cause fuel injection equipment
damage.
Draining the Diesel Fuel Conditioner
Module (DFCM) WARNING
Your vehicle must be stopped with
the engine off when draining the
Diesel Fuel Conditioner Module. Fuel
may ignite if the separator is drained while
the engine is running or vehicle is moving. 17
Super Duty (TFA) , enUSA Fuel and Refueling

•
Low fuel operation: If the low fuel
pressure message appears when your
vehicle is warm and during low fuel
tank level operation (near empty),
refuel your vehicle. If the message
reappears after fueling, see below. If
the message does not come back, the
low fuel pressure condition was due to
low fuel levels in the fuel tank.
• Normal operation: If the low fuel
pressure message appears during
normal operation when the engine is
fully warm, and fuel level is not low,
you must change the fuel filters
regardless of the maintenance
schedule interval.
• If replacement of the fuel filter does
not remedy the low fuel pressure
message during normal operation as
defined above, take the vehicle to an
authorized dealer.
Changing the Engine-Mounted and
Diesel Fuel Conditioner Module Fuel
Filters
Your vehicle is equipped with two fuel
filters. The first filter mounts on top of the
engine on the driver ’s side. The second
filter, inside the diesel fuel conditioner
module, is mounted on the frame rail under
the driver ’s side floorboard near the
transmission. You should replace both
filters at the same time. Regular fuel filter
changes are an important part of engine
maintenance; failing to keep with the
scheduled maintenance could lead to
engine performance issues and fuel
injection system damage. Refer to the
scheduled maintenance information of this
supplement for more information. See
General Maintenance Information
(page 59). Refer to Motorcraft part numbers in the
Capacities and Specifications chapter for
the fuel filter replacement part number.
See Motorcraft Parts (page 55). This part
number includes filters and seals for both
the engine-mounted and frame-mounted
filters.
Removal - Diesel Fuel Conditioner
Module filter
The diesel fuel conditioner module filter is
located in the lower portion of the housing.
1. Drain the diesel fuel conditioner
module. See Draining the Fuel and
Water Separator earlier in this chapter.
2. Remove the lower portion of the diesel
fuel conditioner module housing (filter
bowl) by turning it counterclockwise
using a 32 mm socket. Note:
Depending on the amount of seal
swelling, removal of the filter bowl may be
noisy and require some effort. Replace the
seal prior to reinstalling the filter bowl to
improve assembly.
3. Remove and discard the old fuel filter element.
4. Carefully clean the mating surfaces using a lint-free rag.
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Super Duty (TFA) , enUSA Fuel and RefuelingE163361

Diesel fuel dispensing nozzle fill rate
Your truck is equipped with a fuel fill pipe
that is able to accept fuel up to 20 gallons
per minute from an 11⁄8 fuel-dispensing
nozzle. Pumping fuel at greater flow rates
may result in premature nozzle shut-off or
spit back.
Fuel filler cap
WARNINGS
The fuel system may be under
pressure. If the fuel filler cap is
venting vapor or if you hear a hissing
sound, wait until it stops before completely
removing the fuel filler cap. Otherwise, fuel
may spray out and injure you or others. If you do not use the proper fuel filler
cap, excessive pressure or vacuum
in the fuel tank may damage the fuel
system or cause the fuel cap to disengage
in a collision, which may result in possible
personal injury. Note:
If you must replace the fuel filler cap,
replace it with a fuel filler cap designed for
your vehicle. The vehicle warranty may be
void for any damage to the fuel tank or fuel
system if the correct genuine Ford or
Motorcraft® fuel filler cap is not used.
Your fuel tank filler cap has an indexed
design with a 1/4 turn on/off feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise until it spins off.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the
cap with the notches on the filler pipe.
5. Turn the filler cap clockwise 1/4 of a turn until it clicks at least once. EMISSION CONTROL SYSTEM
Diesel Exhaust System: Oxidation
Catalyst And Diesel Particulate
Filter System (If Equipped)
Your vehicle is equipped with a diesel
particulate filter. The diesel particulate
filter is an inline filter in the exhaust system
that reduces carbon emissions by trapping
exhaust particles before they reach the
tailpipe. The diesel particulate filter looks
similar to a traditional exhaust catalyst,
except larger, and is part of the exhaust
system under the vehicle. The filter couples
to a diesel oxidation catalyst that reduces
the amount of harmful exhaust emitted
from the tailpipe. As soot gathers in the
system, it begins to restrict the filter. You
need to periodically clean the soot that
gathers inside the filter. You can clean the
soot in two different ways, passive
regeneration and active regeneration. Both
methods occur automatically and require
no actions from the driver. During either
one of these regeneration methods, you
may notice a change in exhaust tone. At
certain times, the information display will
display various messages related to the
diesel particulate filter. See the Information
Displays chapter in the Owner Guide for
more information.
Passive regeneration
In passive regeneration, the exhaust
system temperature and constituents
automatically clean the filter, or reduce
the soot level, by burning (oxidizing) the
soot. Cleaning occurs naturally because of
normal engine operating conditions (at
varying levels, due to driving patterns).
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Super Duty (TFA) , enUSA Fuel and Refueling