NTB17-035b

Classification:
Reference:
RS17-025b
Date:
NTB17-035b
August 25, 2017
2013 – 2016 LEAF;
OCCUPANT CLASSIFICATION SYSTEM RETROFIT
This bulletin has been amended. Pages 15 and 17 have been revised.
No other changes have been made. Please discard all previous versions of this bulletin.
APPLIED VEHICLES:
2013 – 2016 LEAF (ZE0)
SERVICE INFORMATION
The information in this bulletin is provided for customers who have concerns with their
Occupant Classification System (OCS) operation after all campaigns have been completed.
Follow the steps in this bulletin to determine if this OCS retrofit procedure is applicable to
the vehicle you are working on.
DETERMINE IF OCS RETROFIT APPLIES
1. Check Service COMM to confirm if OCS reprogramming campaign has been completed
(R1607 / NTB16-054).
Completed:

Write on the repair order the date it was completed and by which dealer.

Go to step 2.
Not Completed:

Complete campaign R1607 / NTB16-054.

No further action needed. OCS retrofit does NOT apply.
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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2. Verify and document the customer’s concern (have the customer demonstrate the
concern).
3. Using CONSULT-III plus, check for Airbag or OCS related DTCs.
No Airbag or OCS DTCs: go to step 4.
Airbag or OCS DTCs stored:

Refer to the Electronic Service Manual (ESM), section SRC – SRS Airbag
Control System, for diagnostic and repair information.

OCS retrofit does NOT apply.
4. If all of the following are confirmed:

Campaign R1607 / NTB16-054 has been completed.

Customer concern has been confirmed and documented.

No Airbag or OCS DTCs are stored.
Then
5. Perform the Service Procedure in this bulletin.
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SERVICE PROCEDURE
WARNING: This procedure involves working under the passenger seat. The metal seat
frame has sharp edges.
CAUTION: Handle interior trim carefully to avoid damage. Work with clean hands and
clean tools to avoid dirt and stains. Use protective covers as needed.
IMPORTANT: Follow all cautions, warnings, and notes in the Electronic Service Manual
(ESM) when working on or near a Supplemental Restraint System (SRS), such as an air
bag or OCS components.
1. Turn the ignition ON.
2. Write down the radio settings.
Presets
AM
FM 1
FM 2
SAT 1
SAT 2
SAT 3
Bass
1
2
Treble
3
4
Balance
Fade
5
6
Spd Sen. Vol.
3. If equipped, write down the customer preferred setting for the Automatic Air
Conditioning System.

If needed, refer to System Settings in the HAC section of the Electronic Service
Manual (ESM).
4. Check to see if the timer for “charging” or “climate control” is ON. If ON, turn OFF and
make sure to turn back ON after the service is completed.

For charging timer on vehicles with navigation – write down which days are OFF,
Timer 1 or Timer 2.
5. Turn the ignition OFF.
6. Passenger seat removal:
a. Disconnect both battery cables, negative cable first.
b. Wait at least 3 minutes.
c. Remove the passenger seat from the vehicle.

Refer to the ESM, section SE-Seat, for seat removal information.
7. Set the seat in a clean working area.
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NOTE:

In the next steps you will be replacing the seatbelt buckle and the OCS harness.

Figure 1 shows the old and new parts.

The new seatbelt buckle and OCS harness are listed in the Parts Information.
EXAMPLE
EXAMPLE
New OCS harness and
seatbelt buckle to be installed
Old OCS harness and seatbelt
buckle are removed from the seat.
Notice the new harness and buckle
have a new branch with connector
Figure 1
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8. Remove the seatbelt buckle and buckle harness.

Buckle is held on with one nut (see Figure 2).

Remove the buckle harness clips shown in Figures 2 and 3.
9. Install the new buckle and harness.

Install the new buckle harness clips into the same location as the old clips (see
Figures 2 and 3).

The new harness branch will be connected later in the procedure.

Torque the seat belt buckle mounting nut to:
49 N·m (5.0 kg-m, 36 ft-lb)
Seatbelt buckle
mounting nut
Harness
routed under
the seat
Harness clip
Harness clip
Harness clip
Figure 2
Harness clip
Harness clip
Buckle harness connector
New buckle harness
branch to be connected
later
Figure 3
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10. From under the seat, remove the old OCS harness and install the new one.

The OCS harness consists of the wiring and connectors between the OCS sensors,
OCS control unit and new seat belt buckle.
IMPORTANT:
a. Disconnect one OCS harness connector or mounting clip, then
b. Connect the new OCS harness connector or mounting clip before moving to the
next one.

Disconnecting/connecting one at a time will ensure that the new harness is
connected exactly as the old one.

Refer to images on the next page for exact harness mounting points.
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NTB17-035b
OCS and Seat Buckle Harness, Mounting Points and Component Locations
Buckle harness clip
Buckle harness clip
Yellow connector
harness routes on top
OCS control unit
OCS sensor
New buckle harness connector
(refer to steps 12, 13, and 14)
OCS harness clip
2 harness clips located on inside of
seat frame for OCS sensor
harness; (see Figure 5 below)
OCS sensor
Figure 4
OCS sensor
harness clip
locations - Clips
from inside of seat
frame
Figure 5
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OCS control unit
11. Replace the OCS control unit with the
new one.

OCS control unit is held on with 2
screws.

The OCS control unit is located under
the front edge of the seat.
Figure 6
12. Cut 2 strips of flocking tape (J-50397-8);
each strip about 5 inches long.

Flocking tape is part of the squeak
and rattle kit – J-50397.
Figure 7
13. Connect the new seat belt buckle
harness connector to the new OCS
harness connector.

Wrap 1 strip of flocking tape around
each side of the new connector as
shown.
Flocking tape on
both sides of
new connector.
Figure 8
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14. Secure the new connector to the seat frame support tube in the location shown in
Figure 9.

Use tie strap listed in Parts Information.

Verify harness is routed as shown in Figure 9.
Yellow harness
routed on top
Support tube
Trim excess tie strap
material
Figure 9
15. Reinstall the seat into the vehicle in reverse order of
removal.

Reconnect all electrical connectors that were
disconnected during seat removal.

Torque passenger seat mounting bolts to: 40 N•m
(4.1 kg-m, 30 ft-lb)

Refer to Figure 10 for torque sequence.
Figure 10
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16. Reconnect the battery cables, positive cable first.
17. Reset/reinitialize systems as needed.

Refer to the ESM section, PG – Power, Supply & Ground Elements for a listing of
systems that require reset/initialization after reconnecting 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, power windows, clock, etc.
18. Perform Zero Point Reset, using CONSULT III plus, on the next page.
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Zero Point Reset
1. Prepare the vehicle for OCS zero point reset as follows:

Level the vehicle.

No objects on the passenger seat or in the storage bin.

No occupants in the vehicle – including the servicing technician.

PC is outside of the vehicle on a suitable support.
 Do not set the PC on the vehicle.

Do not touch the vehicle during the OCS zero point reset.

Minimize vibrations of the vehicle.
2. Connect the plus VI to the vehicle.
3. Open / start CONSULT-III plus (C-III plus).
4. Turn the ignition ON, with engine OFF (engine not running/not in ready mode).
5. Wait for the plus VI to be recognized.

The Serial No. will display when the plus VI is recognized.
6. Select Diagnosis (One System).
7. Scroll C-III plus (All systems) and select OCCUPANT DETECTION.
Step 7
Scroll here
Figure 1A
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8. Select Zero point reset function.
9. Select Start.
Step 8
Step 9
Figure 2A
10. Select Next.
Step 10
Figure 3A
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11. Select Start and then proceed to step 12.

After selecting Start, if Figure 5A is displayed:
a. Check the OCS control unit and confirm that harness connector is completely
seated.
b. Turn the ignition OFF and then restart procedure from step 4 on page 11.
Step 11
Figure 4A
Figure 5A
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12. Zero point reset will display “EXECUTING”.
Figure 6A
13. When finished, "Completed" will display next to “Current status”.

Select End and then proceed to step 14.
Figure 7A
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Step 13
NTB17-035b
14. Turn the ignition OFF and then back ON and observe the air bag warning light and front
passenger airbag status light:

The air bag warning light

The front passenger airbag status light
should illuminate for 7 seconds and
then either stay illuminated or go out depending on the occupation of the front
passenger seat.
should illuminate for 7 seconds and then go out.
Front Passenger Airbag Status Light Operation
CONDITION
Empty
DESCRIPTION
Empty front passenger seat
Bag or Child or Child Restraint
or Small Adult in the front
Nobody/Somebody
passenger seat
Adult
Adult in front passenger seat
PASSENGER AIR BAG
INDICATOR LIGHT
ON (illuminated)
FRONT
PASSENGER AIR
BAG STATUS
DISABLED
ON (illuminated)
DISABLED
OFF (dark)
ENABLED
NOTE: If the air bag warning light or the front passenger airbag status light does not
operate as described above there may be an issue not covered by this bulletin.
Refer to ASIST and the appropriate Service Manual for additional diagnostic and
repair information.
15. Provide the customer with a printed copy of FRONT PASSENGER AIR BAG STATUS
LIGHT OPERATION (see last page).
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PARTS INFORMATION
DESCRIPTION
PART NUMBER
QUANTITY
Controller Assy-Occupant Sensor
(OCS Control Unit)
98856 - 4NP0A
1
Seatbelt Buckle – Black
86842 - 4NP8B
1
Seatbelt Buckle – Beige
86842 - 4NP8A
OCS Harness
98854 - 4NP0A
1
Clip
(Tie-strap)
24224 - 3VX0B
1
Flocking Tape (1)
J - 50397 - 8 (1)
About 10 inches
(1) Flocking Tape is part of the squeak and rattle kit – J-50397. Additional Flocking Tape
can be obtained from Tech-Mate at 1-800-662-2001.
CLAIMS INFORMATION
Submit a “CM” line claim using the following claims coding:
CM ID
DESCRIPTION
OP CODE
FRT
P7322
Perform OCS Retrofit
P73220
0.9 hrs
EXPENSE CODE:
EXPENSE CODE
041
DESCRIPTION
Flocking Tape
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MAX AMOUNT
$3.00
NTB17-035b
FRONT PASSENGER AIR BAG STATUS LIGHT OPERATION
NOTE: Please print this page and place a copy in the vehicle.
OCS SYSTEM OPERATION
The OCS system enables or disables the front passenger air bag
depending on the weight applied to the front passenger seat. Front
passenger air bag status (Enabled or Disabled) is indicated by the
front passenger air bag status lamp pictured here
 When the front passenger seat is empty, the passenger air bag status lamp should be
ON (illuminated) which means the passenger air bag is Disabled.
 When the front passenger seat is occupied by an adult, the passenger air bag status
lamp should be OFF (dark) which means the passenger air bag is Enabled.
 When the front passenger seat is occupied by a child, a child restraint, or a small adult,
the passenger air bag status lamp should be ON (illuminated) which means the
passenger air bag is Disabled.
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