Classification:

Reference:

EL22-011B

Date:

NTB22-051B

July 11, 2023

HORN INOPERATIVE
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:

2019-2023 Altima (L34)
2018-2023 Kicks (P15)
2018-2023 LEAF (ZE1)
2020-2023 Sentra (B18)
2020-2023 Versa (N18)

IF YOU CONFIRM
The horn on an APPLIED VEHICLE is inoperative.

ACTION
Inspect the horn pad for a pinched ground wire. If a pinched ground wire is found, replace
the high and low horns.

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.
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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REQUIRED SPECIAL TOOL

Airbag Release Tool – J-52551
(New part number: NI-52551)

Figure 1



Additional tools may be purchased from Tech•Mate online: www.techmatetools.com,
or by phone: 1-833-397-3493.
HINT: When ordering, keep in mind that the tool part number prefix has changed
from “J” to “NI”. For example, J-52551 is now NI-52551.

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NTB22-051B

SERVICE PROCEDURE
1.

Write down the radio settings.
Presets

1

2

3

4

5

6

AM
FM 1
FM 2
SAT 1
SAT 2
Bass

2.

Treble

Balance

Fade

Speed Sen.
Vol.

Open the hood and disconnect the negative battery terminal.


Verify the ignition is OFF before disconnecting the negative battery terminal.



Install protective tape over the negative battery terminal.



Wait a minimum of 3 minutes before proceeding, so that the air bag diagnosis unit
may fully discharge any remaining electricity.
To prevent damage to the ACC power supply, do not operate the vehicle, such as
locking/unlocking or opening/closing the doors within the 3-minute waiting period.

To prevent the risk of personal injury or damage to the vehicle, verify the ignition switch is
OFF and a minimum of 3 minutes has elapsed since the negative battery terminal was
disconnected, before proceeding to step 3.
3.

Locate the two (2) access holes on the back of the steering wheel and the one (1)
access hole on the bottom of the steering wheel (Figure 2).
A. Right side access hole
B. Left side access hole
C. Bottom access hole

Figure 2
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NTB22-051B

4.

Turn the steering wheel until the access hole (A) is visible from the top of the steering
column (Figure 3).

Figure 3

5.

Insert the Airbag Release Tool (A), into the access hole and under the spring (1), as
shown in Figure 4.

Figure 4

6.

Lift the spring (1) using the Airbag Release Tool (A), to disengage the spring, as
shown in Figure 5.

Figure 5

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NTB22-051B

7.

Turn the steering wheel in the opposite direction, and then repeat steps 4 - 6 to
release spring B (Figure 2 on page 3).

8.

Using the Airbag Release Tool (A), gently push the bottom pawl (B) and gently tilt the
bottom of the driver airbag module outward so that the pawl will not re-engage, and
then pull out the driver airbag module.

Figure 6

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NTB22-051B

9.

Inspect the horn ground wire for signs of pinching.


If signs of a pinched ground wire are present, proceed to step 10 on page 7 to
replace the high and low horns.



If signs of a pinched ground wire are not present, skip to step 11 on page 7 to
install the driver airbag module.

HINT: Some 2023 vehicles have a rigid plastic wire to guide the horn ground wire
(Figure 8 and Figure 9). This guide acts to help control the horn ground wire and
prevent a pinched condition. However, pinching of the horn ground wire is still
possible if the guide has been bent out of position.

Horn ground wire
(Without wire guide)
Figure 7
Horn ground wire
(With wire guide)

Horn ground wire
(With wire guide)

Figure 9

Figure 8

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NTB22-051B

10.

Replace the high and low horns.


11.

Refer to the ESM: DRIVER CONTROLS > HORN > REMOVAL AND
INSTALLATION – HORN: Removal and Installation

Install the driver airbag module in the reverse order of removal.
IMPORTANT:
o The pinched ground wire does not require a wire repair.
o If the vehicle does not have the wire guide:
 When installing the driver airbag module to the steering wheel, rotate the
driver airbag module clockwise 360° to remove excess slack from the
ground wire and to prevent the ground wire from becoming pinched.
o If the vehicle does have the wire guide:
 DO NOT rotate the driver airbag module prior to installing. Ensure the
connector has adequate retention to the spade terminal, and reposition the
wire guide to the proper position by adjusting the angle of the spade
terminal (if necessary). The guide should be between the orange and
yellow airbag connectors and parallel to the surface of the airbag inflator,
as shown in Figure 8 and Figure 9 on page 6.

12.

Reconnect the negative battery terminal.

13.

Perform ADDITIONAL SERVICE WHEN REMOVING 12V BATTERY NEGATIVE
TERMINAL.


14.

Refer to the ESM: ELECTRICAL & POWER CONTROL > POWER SUPPLY,
GROUND & CIRCUIT ELEMENTS > BASIC INSPECTION > POWER SUPPLY,
GROUND CIRCUIT ELEMENTS > ADDITIONAL SERVICE WHEN REMOVING
12V BATTERY NEGATIVE TERMINAL

Test and confirm that the horns operate correctly.

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NTB22-051B

PARTS INFORMATION

(1)

DESCRIPTION

PART NUMBER

QUANTITY

HORN ASSY – ELECTRIC HIGH

25610-***** (1)

1

HORN ASSY – ELECTRIC LOW

25620-***** (1)

1

Use the VIN in the EPC to determine the correct part number.

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

MODEL

Inspect Horn Ground
Wire & Replace Horn
(All)

(1)

PFP

OP CODE

SYM

DIA

FRT

Altima

0.7

Kicks

0.4

LEAF

(1)

RXB5AA

ZE

32

0.7

Sentra

0.4

Versa

0.4

Reference the EPC and use the Horn Assy – Electric (25610-*****) as the Primary
Failed Part (PFP).

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE

DESCRIPTION

June 17, 2022

NTB22-051

Original bulletin published

February 22, 2023

NTB22-051A

APPLIED VEHICLES and Tech•Mate information
on page 2 revised

July 11, 2023

NTB22-051B

HINT added to step 9. Figure 8 and Figure 9
added, IMPORTANT on step 11 updated

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NTB22-051B