NTB17-031a

Classification:
Reference:
EL17-002a
Date:
NTB17-031a
November 1, 2017
2016 – 2017 TITAN XD;
COOLANT HEATER (ENGINE BLOCK HEATER) INSTALLATION
This bulletin has been amended. Substantial changes have been made throughout the
body of the bulletin. Please discard all previous versions of this bulletin.
APPLIED VEHICLES:
APPLIED ENGINE:
2016 – 2017 Titan XD (A61)
Cummins (5.0L V8) Diesel
SERVICE INFORMATION
Some customers may want to use a coolant heater (engine block heater) for their vehicle
when ambient temperatures are below 32°F (0°C).
2016 Titan XD:
 Some were not equipped from the factory with a coolant heater or cord.
2016 - 2017 Titan XD:
 Some were equipped from the factory with just a coolant heater (no cord) located
on the front cover of the engine. A coolant heater located on the front cover will
not be used for these installation instructions.
If a customer chooses to purchase the parts and labor for installation of a coolant heater
and/or coolant heater cord, use the Service Procedure in this bulletin for installation
instructions.
NOTE:
 Refer to the Owner’s Manual for coolant heater (engine block heater) operation
instructions.
 Coolant heaters (engine block heaters) will operate continuously when plugged into
the correct voltage electrical socket. Operate coolant heater only when the ambient
temperature is below 32°F (0°C).
Nissan Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.
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SERVICE PROCEDURE
Coolant Heater Installation
1. Record (write down) any customer settings that will be lost when the battery is
disconnected.

Refer to the Electronic Service Manual (ESM) section PG – Power Supply,
Ground, & Circuit Elements, for a listing of systems that may lose settings or
memory when disconnecting the 12V battery.
 Look in the PG section index for ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL.
 This list often includes items such as audio, HVAC, power windows, clock, etc.
2. Disconnect the negative battery cable from both batteries.
3. Drain the engine coolant (if coolant heater is being installed).

Refer to the ESM, section CO – Engine Cooling System, for information on
draining coolant.

Drain the coolant into a clean drain pan. The drained coolant will be
reused/reinstalled back into the cooling system.
CAUTION: Do not spill coolant on the drive belt.
IMPORTANT: If a coolant heater is present in the front cover, leave it in this location as a
non-functional plug.
4. Remove the existing water inlet (Figure 1) as follows:
a. Remove the lower radiator hose from the water inlet.
b. Remove the heater hose from the water inlet.
c. Remove the two bolts that attach the water inlet to the engine front cover.
Lower radiator hose
Water inlet
Figure 1
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Heater hose
Bolts
NTB17-031a
5. Install new water inlet in the reverse order that the original was removed (Figure 2).

Torque the two bolts to 18 N•m (1.8 kg-m, 13 ft-lb).
IMPORTANT:
 Use the new bolts from Parts Information when installing the new water inlet. They
are longer.
 The bolt with the thread-locker (SCREW,HEX FLANGE HEAD CAP) must be used in
the location shown in Figure 2.
6. Install a new coolant heater into the bottom of the water inlet (Figure 2).

Torque the coolant heater to 55 N•m (5.6 kg-m, 40 ft-lb).
SCREW,HEX FLANGE HEAD CAP
(with thread-locker)
Lower radiator hose
Water inlet
Coolant heater
Heater hose
Figure 2
7. Re-fill the engine coolant.

Refer to the ESM, section CO – Cooling System, for coolant refill information.

Reuse the coolant that was removed from the engine, and then verify that the
coolant is at a 50/50 mix in the system using a refractometer.
IMPORTANT:
 Use Nissan long life coolant and distilled water, or equivalent.
 Coolant should be changed every 45,000 miles.
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NTB17-031a
Coolant Heater Cord Installation
1. Prepare the “coolant heater cord” (cord) as follows:
a. Remove the cord from the package.
b. Remove the white tape that retains the coiled cord.
c. Remove the clips circled in green that are shown in Figure 3 from the cord.

Do not remove the three (3) clips that are circled in red in Figure 3.
IMPORTANT: These three (3) original clips will be retained for cord installation.

In Figure 3, two (2) retained clips are hidden in the coiled cord.
Do not remove these
two (2) clips
Do not remove this clip. NOTE: There
are two of these; remove only one (1).
Remove this
clip
Remove
tape
Remove
these clips
Before
Figure 3
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NTB17-031a
d. Slide the three (3) remaining harness clips to the locations shown in
Figures 4, 5 and 6.
1st clip
2nd clip
3rd clip
After
Figure 4
Coolant heater cord
Connection to
block heater
1st clip
1st clip; approximately
14 inches from end
2nd clip
2nd clip; approximately 21 inches
from end (7 inches from 1st clip)
Figure 5
110VAC plug
3rd clip
3rd clip; approximately
9 inches from end
Figure 6
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NTB17-031a
e. Recoil the cord so that:

The block heater connector to coiled cord is 22 inches.

The 110VAC plug end to coiled cord is 17 inches.
And then

Retain recoiled cord with a zip tie as shown in Figure 7.
22 inches
Zip tie
Figure 7
17 inches
4. Connect the cord to the coolant heater (Figure 8).
5. Clip the cord to the power steering line as shown in Figure 8.

Leave slack in the cord between the coolant heater connector and the first clip, to
the power steering line, as shown in Figure 8.
Power
steering line
Coolant heater
connector
Clips
Coolant
heater cord
Figure 8
Coolant heater
cord slack
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NTB17-031a
6. Attach the coiled section of cord to the power steering lines with two zip ties; one at
each end.

Insert the zip ties through at least three coils to provide support.
Bottom of radiator core support
Zip ties
Coolant
heater cord
Transmission
cooler
Figure 9
7. Route the 110VAC plug end of the cord over the top of the frame in front of the
transmission cooler (Figures 10).
8. Clip the cord to the frame.

Insert from top into the pre-existing hole (Figure 10), with clip relocated in step 1d.
NOTE: Figure 10 shows the cord clip inserted through frame.
Transmission
cooler
110VAC plug end of
coolant heater cord
Frame
3rd clip inserted
into frame from top
Figure 10
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NTB17-031a
9. Route the coolant heater cord 110VAC
plug through the front bumper as shown
in Figure 13.
Coolant heater
cord 110VAC plug
Front bumper
Figure 13
10. Re-install any remaining parts that were removed in reverse order.

Refer to the ESM as needed for re-assembly.
11. Re-set any customer settings that were lost when the battery was disconnected.

Refer to the ESM section PG-Power Supply, Ground, & Circuit Elements, for a
listing of systems that may lose settings or memory when disconnecting the 12V
battery.
 Look in the PG section index for ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL.
 This list often includes items such as audio, HVAC, power windows, clock, etc.
8/9
NTB17-031a
PARTS INFORMATION
DESCRIPTION
PART #
QUANTITY
HEATER – CYLINDER BLOCK (Coolant Heater)
COOLANT HEATER CORD
CONNECTION,WATER INLET (Water Inlet)
SCREW,HEX FLANGE HEAD CAP
(Water inlet mounting bolt with thread-locker)
SCREW,STUDDED FLANGE CAP
(Water inlet mounting bolt)
CLIP (TIE STRAP)
11001-EZ40A
24076-EZ01A
13048-EZ40B
1
1
1
11035-EZ44D
1
29799-EZ40A
1
24224-3VX0B
1
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NTB17-031a