Classification:

Reference:

AT21-006

Date:

NTB21-073

August 6, 2021

HESITATION AND/OR SHIFT SHOCK
APPLIED VEHICLES:

2020-2021 Frontier (D40)

IF YOU CONFIRM
The customer reports hesitation and/or shift shock during acceleration,
OR
Shift shock during deceleration,
AND
There are no TCM related DTCs stored.

ACTION
1.

Confirm the current TCM part number.

2.

Reprogram the TCM, 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.
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.

1/3

SERVICE PROCEDURE

Perform the following before starting the reprogramming procedure to prevent damage to the
control unit.









Connect the AC Adapter to the CONSULT PC.
Connect the CONSULT PC to the Internet via Wi-Fi or a network cable.
Ensure ASIST on the CONSULT PC has been synchronized (updated) to the
current date and all C-III plus software updates (if any) have been installed.
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, the reprogramming may
be interrupted.
Turn OFF all vehicle electrical loads.
Turn ON the hazard warning lamps.
Connect a battery maintainer or smart charger, set to reflash mode or a similar
setting, to ensure the battery voltage stays between 12.0 V and 15.5 V.

HINT:





If you are not familiar with the reprogramming procedure, click here. This will link
you to the "CONSULT-III plus (C-III plus) ECM/TCM Reprogramming" general
procedure.
Take the vehicle for a 10 minute drive in order to meet the following Idle Air
Volume Learning conditions:
 Engine coolant temperature: 70 - 100°C (158 - 212°F)
 Battery voltage: More than 12.9 V (At idle)
 Transmission: Warmed up
When reprogramming is complete, you may be required to perform:
 Throttle Valve Closed Position Learning
 Idle Air Volume Learning
 Accelerator Pedal Released Position Learning
 Calibration of Park Position Sensor
 Calibration of Decel G Sensor
 DTC Erase

2/3

NTB21-073

Confirm the current TCM part number and, if applicable, reprogram the TCM
1.

Using C-III plus, confirm the current TCM part number and write it on the repair order.


If it matches one of the part numbers in Table A, continue to step 2 to reprogram
the TCM.



If there is not a match, TCM reprogramming is not required. Refer to the ESM for
further diagnostic information.

Table A
MODEL

CURRENT TCM PART NUMBER: 310399BT1B, 9BT1C
9BT3B, 9BT3C
9BT5A, 9BT6A

2020-2021 Frontier

2.

Reprogram the TCM.

3.

After completing Erase ALL DTCs, print a copy of the C-III plus screen showing the
before and after part numbers of the control unit and attach it to the repair order.

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:

(1)

DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Reprogram A/T Control Unit (TCM)

(1)

JX67AA

ZE

32

0.6

Reference the electronic parts catalog and use the Control Valve Assy (31705-*****)
as the Primary Failed Part (PFP).

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
August 6, 2021

NTB21-073

DESCRIPTION
Original bulletin published

3/3

NTB21-073