NTB21-001

Classification:
Reference:
EC20-031
Date:
NTB21-001
January 6, 2021
2020-2021 TITAN/TITAN XD; TCM COMMUNICATION ERROR
CAUSING A NO START CONDITION
APPLIED VEHICLES:
2020-2021 Titan/Titan XD (A61)
IF YOU CONFIRM
The customer states the engine will not crank and will not start.
(The incident may be intermittent.)
And
There is a U0101 DTC (Lost Comm TCM) in the Engine Control Unit (ECU) and/or the
Shifter Control Unit (SCU). This DTC may be in a PAST or CURRENT status.
Or
The TCM shows “UNKWN” in the PRESENT column or “0” in the PAST column under the
CAN DIAG SUPPORT MNTR tab within the ECU (ENGINE) or the SCU (SHIFT) in
CONSULT-III PLUS (C-III plus). See Figure 1 and Figure 2.
Figure 1
Figure 2
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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ACTION
1.
Confirm the current TCM part number.
NOTE: If the Park indicator is not seen in the Driver Information Center (DIC) and
C-III plus does not display the current TCM part number after a 2 minute wait with
the ignition ON, engine OFF, this TSB does not apply. Refer to the ESM for further
diagnostic information.
Figure 3
2.
Reprogram the TCM, if applicable.
3.
Confirm the current ECM part number.
4.
Reprogram the ECM, if applicable.
IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
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SERVICE PROCEDURE
Confirm the current TCM part number
IMPORTANT: Before starting, make sure:

ASIST on the CONSULT PC has been synchronized (updated) to the current
date.

All C-III plus software updates (if any) have been installed.

Connect a battery maintainer or smart charger set to reflash mode or a similar
setting. If the vehicle battery voltage drops below 12.0V or rises above 15.5V
during reprogramming, the TCM or ECM may be damaged.

Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the TCM or ECM may be damaged.

Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during reprogramming, the process
will be interrupted and the TCM or ECM may be damaged.

Turn OFF all external Bluetooth® devices (e.g., cell phones, printers, etc.)
within range of the CONSULT PC and the VI. If Bluetooth® signal waves are
within range of the CONSULT PC or VI during reprogramming, reprogramming
may be interrupted and the TCM or ECM may be damaged.
1.
Connect a battery maintainer/smart charger to the vehicle.
2.
Connect the VI to the vehicle.
3.
Start C-III plus.
4.
Wait for the VI to be recognized.

The serial number will display when the VI is recognized.
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5.
Select Re/programming, Configuration.
The VI is
recognized
Figure 4
6.
Check the box to confirm the precaution instructions have been read, and then select
Next.
NOTE: Use the arrows (if needed) to view and read all the precautions.
Figure 5
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7.
Select Automatic Selection(VIN).
Figure 6
8.
Allow C-III plus to perform automatic VIN selection.
Figure 7
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9.
Confirm the VIN or Chassis # is correct, and then select Confirm.
XXXXXXXXXXXXXXX
TITAN
Figure 8
10.
Allow the System call to be performed.
Figure 9
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11.
Confirm the VIN is correct for the vehicle, and then select Confirm.
XXXXXXXXXXXXXXXXXX
Figure 10
12.
Select TRANSMISSION.
Figure 11
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13.
Select Reprogramming.
Figure 12
14.
Find the TCM Part Number and write it on the repair order, and then select Save.
NOTE: This is the current Part Number (P/N).
XXXXXXXXXXXX
TCM
XXXXXXX
TITAN
XXXXXXXXXXXX
XXXXXXXXXXXX
Figure 13
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15.
Compare the Part Number you wrote down in step 14 on page 8 to the numbers in the
Current TCM Part Number column in Table A below.

If there is a match, skip to step 16 on page 10 to continue the reprogramming
procedure.

If there is not a match, reprogramming is not needed. Refer to the ESM for
further diagnostic information.
NOTE: If TCM regprogramming is not required, ECM reprogram is not required
and this TSB does not apply.
Table A
MODEL YEAR
2020
2021
CURRENT TCM PART NUMBER BEFORE
REPROGRAMMING: 31039 9FV1A, 9FV1B, 9FV1D, 9FV1E
9FV3A, 9FV3B, 9FV3D, 9FV3E
9FV7A, 9FV7B, 9FV7D, 9FV7E
9FV5A
9FV4B, 9FV8B
9FV1D, 9FV1E
9FV3D, 9FV3E
9FV7D, 9FV7E
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NTB21-001
Reprogram the TCM
16.
Follow the on-screen instructions to navigate C-III plus and reprogram the TCM.
NOTE: In some cases, more than one new P/N for reprogramming is available.
 If more than one new P/N is available, the screen in Figure 14 displays.
 Select and use the reprogramming option that does not have the message
“Caution! Use ONLY with NTBXX-XXX”.
 If you get this screen and it is blank (no reprogramming listed), it means there
is no reprogramming available for this vehicle.
TRANSMISSION
Figure 14
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17.
Select USA/CANADA Dealers from the drop down menu, and then select OK.
Figure 15
18.
Login using your NNAnet credentials.

The CONSULT PC must be connected to the Internet (Wi-Fi or cable).

If you do not know your User Name and Password, contact your service manager.
Figure 16
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19.
Select Next, and then proceed to step 20 on page 14.
NOTE: When the screen in Figure 17 displays, TCM reprogramming is complete. If
the screen in Figure 17 does not display (indicating that reprogramming did not
complete), refer to the information on the next page.
Figure 17
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TCM Recovery:
Do not disconnect the VI or shut down C-III plus if reprogramming does not
complete.
If reprogramming does not complete and the “!?” icon displays as shown in
Figure 18:

Check battery voltage
(12.0 V – 15.5 V).

Ignition is ON, engine is OFF.

External Bluetooth® devices
are OFF.

All electrical loads are OFF.

Select retry and follow the on
screen instructions.

“Retry” may not go through on
first attempt and can be
selected more than once.
XXXXXX
XXXXXX
XXXXX
XXXXXXXXX
XXX
Figure 18
If reprogramming does not complete and the “X” icon displays as shown in
Figure 19:

Check battery voltage
(12.0 V – 15.5 V).

CONSULT A/C adapter is
plugged in.

Ignition is ON, engine is OFF.

Transmission is in Park.

All C-III plus / VI cables are
securely connected.

All C-III plus updates are
installed.

Select Home, and restart the
reprogram procedure from the
beginning.
XXXXXX
XXXXXX
XXXXX
XXXXXXXXX
XXX
Figure 19
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20.
Follow the on-screen instructions to Erase All DTCs.

When the entire reprogramming process is complete, the screen in Figure 20 will
display.
21.
Verify the before and after part numbers are different.
22.
Print a copy of this screen (Figure 20) and attach it to the repair order for warranty
documentation.
23.
Select Confirm, and then proceed to step 24 on page 15 to confirm the ECM part
number.
31039 - _ _ _ _ _
31039 - _ _ _ _ _
TRANSMISSION
Figure 20
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Confirm the current ECM part number
24.
Return to the home screen and perform steps 5 - 11 on pages 4 - 7.
25.
Select ENGINE.
Figure 21
26.
Select Reprogramming.
Figure 22
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27.
Find the ECM Part Number and write it on the repair order, and then select Save.
NOTE: This is the current Part Number (P/N).
XXXXXXXXXXXX
ECM
XXXXXXX
TITAN
XXXXXXXXXXXX
XXXXXXXXXXXX
Figure 23
28.
Compare the Part Number you wrote down in step 27 to the numbers in the Current
ECM Part Number column in Table B below.

If there is a match, continue to step 29 on page 17 to continue the
reprogramming procedure.

If there is not a match, reprogramming is not needed and the procedure is
complete. Review CLAIMS INFORMATION.
Table B
MODEL YEAR
2020
2021
CURRENT ECM PART NUMBER BEFORE
REPROGRAMMING: 23710 9FV8C, 9FV9C
EZ91B, EZ92B, EZ93B, EZ94B
9FW1B, 9FW1C, 9FW2B, 9FW2C
9FW3B, 9FW3C, 9FW4B, 9FW4C
9FW5B, 9FW5C, 9FW6B, 9FW6C
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NTB21-001
Reprogram the ECM
29.
Follow the on-screen instructions to navigate C-III plus and reprogram the ECM.
NOTE: In some cases, more than one new P/N for reprogramming is available.
 If more than one new P/N is available, the screen in Figure 24 displays.
 Select and use the reprogramming option that does not have the message
“Caution! Use ONLY with NTBXX-XXX”.
 If you get this screen and it is blank (no reprogramming listed), it means there
is no reprogramming available for this vehicle.
Figure 24
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30.
Select USA/CANADA Dealers from the drop down menu, and then select OK.
Figure 25
31.
Login using your NNAnet credentials.

The CONSULT PC must be connected to the Internet (Wi-Fi or cable).

If you do not know your User Name and Password, contact your service manager.
Figure 26
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32.
Select Next, and then proceed to step 33 on page 21.
NOTE: When the screen in Figure 27 displays, ECM reprogramming is complete. If
the screen in Figure 27 does not display (indicating that reprogramming did not
complete), refer to the information on the next page.
Figure 27
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ECM Recovery:
Do not disconnect the VI or shut down C-III plus if reprogramming does not
complete.
If reprogramming does not complete and the “!?” icon displays as shown in
Figure 28:

Check battery voltage
(12.0 V – 15.5 V).

Ignition is ON, engine is OFF.

External Bluetooth® devices
are OFF.

All electrical loads are OFF.

Select retry and follow the on
screen instructions.

“Retry” may not go through on
first attempt and can be
selected more than once.
XXXXXX
XXXXXX
XXXXX
XXXXXXXXX
XXX
Figure 28
If reprogramming does not complete and the “X” icon displays as shown in
Figure 29:

Check battery voltage
(12.0 V – 15.5 V).

CONSULT A/C adapter is
plugged in.

Ignition is ON, engine is OFF.

Transmission is in Park.

All C-III plus / VI cables are
securely connected.

All C-III plus updates are
installed.

Select Home, and restart the
reprogram procedure from the
beginning.
XXXXXX
XXXXXX
XXXX
XXXXXXXXX
XXX
Figure 29
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33.
Follow the on-screen instructions to Erase All DTCs.

When the entire reprogramming process is complete, the screen in Figure 30 will
display.
34.
Verify the before and after part numbers are different.
35.
Print a copy of this screen (Figure 30) and attach it to the repair order for warranty
documentation.
36.
Select Confirm.
23710 - _ _ _ _ _
23710 - _ _ _ _ _
ENGINE
Figure 30
37.
Disconnect the battery maintainer/smart charger from the vehicle.
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CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION
PFP
Reprogram A/T Control Unit (TCM)
Reprogram Engine Control Module (ECM)
(1)
(2)
(1)
OP CODE
JE99AA
DE97AA
SYM
DIA
FRT
ZE
32
(2)
Reference the electronic parts catalog and use the Valve Control Assy (31705-*****)
as the Primary Failed Part (PFP).
Reference the current Nissan Warranty Flat Rate Manual and use the indicated Flat
Rate Time (FRT).
AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
January 6, 2021
NTB21-001
DESCRIPTION
Original bulletin published
22/22
NTB21-001