NHTSA ID Number: 10075619
Manufacturer Communication Number: ITB14-042C
TSB/Document Date: 2016-07-07
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
Classification:
Reference:
Date:
RS14-012c
ITB14-042c
April 22, 2016
2-SENSOR OCCUPANT CLASSIFICATION SYSTEM
DIAGNOSTICS AND INFORMATION
This bulletin has been amended to update model years and add applied date information.
Discard all previous versions of this bulletin.
APPLIED VEHICLES:
2013 JX (L50)
2014 - 2016 QX60 (L50)
2014 - 2016 QX60 Hybrid
(L50)
2014 - 2016 Q50 (V37)
2014 - 2016 Q50 Hybrid (V37)
APPLIED DATE
2013 JX All
2014 - 2016 QX60
2014 - 2016 QX60 Hybrid
2014 - 2016 Q50
2014 - 2016 Q50 Hybrid
built before April1, 2016
built before April1, 2016
built before March 28, 2016
built before March 28, 2016
INTRODUCTION
Infiniti is issuing this Technical Service Bulletin to further clarify for Service Advisors and Service Technicians
how to correctly diagnose potential Occupant Classification System (OCS) issues, and also how to explain to
customers when the OCS in their vehicle is operating normally, as described in the Owner’s Manual. This TSB
applies only to vehicles using the 2-sensor OCS, and explains the procedures necessary to confirm that this
type of OCS is operating as designed.
Because the OCS is designed to respond to different occupant seating postures, this TSB provides information
on how to evaluate OCS performance in that context, with an Appendix to be used to assist customers in
understanding appropriate seating posture which will facilitate correct OCS operation.
INSTRUCTIONS
Before attempting any diagnostics and repairs, service technicians must familiarize themselves with the
subject OCS system by reading the SERVICE INFORMATION section of this bulletin (pages 2-3).
Do not attempt any repairs unless “improper operation” of the OCS is confirmed. Refer to Quick Reference
Diagnostic Flow Charts for Passenger Air Bag Indicator Light (page 4), Seat Belt Warning Light (page 5), and
Supplemental Restraint System with DTC B00A0 (page 6).
Infiniti 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 Infiniti dealer to determine if this
applies to your vehicle.
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1/9
SERVICE INFORMATION
NOTE:
If you confirm a vehicle is subject to any Voluntary Recall Campaign that has not been performed,
perform it immediately.
The following campaigns related to OCS may apply to a vehicle you are working on:
ITB13-011 (Recall Campaign # PC217)
ITB14-015 (Recall Campaign # R1404)
ITB15-031 (Recall Campaign # PC407)
System Background
The Occupant Classification System (OCS) is designed to classify the front seat occupant and automatically
turn OFF (inhibit) the passenger air bag under some conditions. Section 1 of the Owner’s Manual has a
detailed description of how the occupant classification system is designed to operate in accordance with federal
regulations. The issues being described may indicate normal operation, depending on the size of the passenger
seat occupant. We urge the customer to please read that section of the Owner’s Manual.
NOTE: In the following sections, the Passenger Air Bag Indicator light (also known as the Passenger Air
Bag status light) is referred to as the PABI light (
).
Basic Operation
Please use Table A to verify and understand the operation of the 2-sensor OCS.
To use the chart, please buckle the driver seat belt. If diagnosing/testing with a passenger, the passenger
needs to be unbuckled to obtain seat belt light status as shown in the table below.
Please note that leaving the passenger seat unbuckled is ONLY for diagnostic purposes while the vehicle is
NOT MOVING in the service area of the dealership.
Table A
CONDITION
DESCRIPTION
Empty
Empty front passenger seat
Nobody
Somebody
Adult
Bag (computer, duffle, etc.) in the
front passenger seat
Child or adult of small stature in the
front passenger seat
Average size adult in the
front passenger seat
PABI LIGHT
(
) RESULT
SEAT BELT LIGHT
(
) RESULT
FRONT
PASSENGER
AIR BAG
STATUS
OFF
(dark)
OFF
(dark)
INHIBITED
ON (illuminated)
OFF (dark)
INHIBITED
ON (illuminated)
ON (illuminated)
INHIBITED
OFF
(dark)
ON (illuminated)
ACTIVATED
NOTE: Air bag data monitor in CONSULT-III plus will indicate front passenger air bag status in real time.
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ITB14-042c
Potential Concerns and Appropriate Procedures
1. Child seated in the front passenger seat and the PABI light (
) is OFF (dark), meaning the front
passenger air bag is enabled and may deploy in a crash.
First, urge the customer to immediately heed the Owner’s Manual instructions and place all children in
the back seat, properly belted and restrained in the child restraint system as needed.
2. Adult seated in the front passenger seat and the PABI light (
passenger air bag is inhibited and will not deploy in a crash.
Perform regular diagnostic repairs.
3. General complaints of PABI light (
) is ON (illuminated), meaning the front
) ON (illuminated) for some occupants, and OFF (dark) for others.
Urge the customer to review the Owner’s Manual. System operation may be appropriate unless their
description of the size of the occupants is inconsistent with the Owner’s Manual.
4. Complaints of the PABI light (
) illuminating and going OFF (dark) intermittently when the seat is
occupied by a small stature occupant.
Urge the customer to review their vehicle’s Owner’s Manual.
Suggest the following:
i. Position the passenger seat as far back as possible.
ii. Sit as upright as possible in the center of the seat cushion with the seatback in the upright position.
iii. Sit back into the seat (not on the front edge) and place your feet flat on the floor.
iv. Allow time for the system to properly classify the front passenger before pulling away from a
stopped condition.
v. Always use your seat belt properly.
Reminders
1. If there are customer concerns of the system taking longer than anticipated to classify the front passenger
during a stopped condition, please suggest decreasing A/C fan speed until the classification is complete.
NOTE: Classification is primarily done while the vehicle is at idle and not moving. This is the best
condition to accurately classify the passenger using the sensors under the passenger seat. Maximum
fan speed can increase the time required for accurate classification.
2. The PABI light only indicates the status of the front passenger air bag. All other air bags are unaffected.
3. All air bags are supplemental restraint systems. Please remind customers to always use seat belts and
child restraints properly as explained in the vehicle Owner’s Manual.
4. No children in the front seat!
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ITB14-042c
Quick Reference Diagnostic Flow Charts
Passenger Air Bag Indicator (PABI) Light Flow Chart
Example of PABI light
NO
Is the PABI light performing to
Electronic Service Manual
(ESM)/Owner’s Manual/TSB
description?
YES
DO NOT ATTEMPT
ANY REPAIRS
Front passenger seat
rail-to-floor bolts
torque okay?
Re-torque bolts by proper
sequence and torque specification
(refer to related ESM), and then
perform
Zero Point Reset
NO
YES
All related harnesses:
Connections, pin fit/alignment
okay?
NO
Resolve connection/pin
fit/alignment issue, and then
perform Zero Point Reset
YES
Replace OCS sensors,
and then perform
Zero Point Reset
Did Zero Point Reset Complete?
NO
Was the “Re-torque bolts”
procedure above actually
done?
NO
YES
YES
End
Replace OCS control unit, and then
perform
Zero Point Reset
Did Zero Point Reset Complete? NO
Replace the lower seat frame, and then
perform Zero Point Reset
YES
End
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ITB14-042c
Seat Belt Warning Light Flow Chart
NOTE: This flow chart is NOT for seat belt buckle related issues.
Example of seatbelt warning
NO
Is the seat belt warning light
performing to
ESM/Owner’s Manual/TSB
description?
YES
DO NOT ATTEMPT
ANY REPAIRS
Front passenger seat
rail-to-floor bolts
torque okay?
Re-torque bolts by proper
sequence and torque specification
(refer to related ESM), and then
perform
Zero Point Reset
NO
YES
All related harnesses: Connections,
NO
pin fit/alignment okay?
Resolve connection/pin
fit/alignment issue, and then
perform Zero Point Reset
YES
Replace OCS sensors,
and then perform
Zero Point Reset
Did Zero Point Reset Complete?
NO
Was the “Re-torque bolts”
procedure above actually done?
NO
YES
YES
End
Replace OCS control unit, and then
perform
Zero Point Reset
Did Zero Point Reset Complete? NO
Replace the lower seat frame, and then
perform Zero Point Reset
YES
End
5/9
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ITB14-042c
Supplemental Restraint System (SRS) Light Flow Chart
NOTE: This flow chart applies to SRS DTC B00A0 only. For all other SRS DTCs, refer to the appropriate ESM.
Example of SRS light
YES
The SRS light is ILLUMINATED
with the engine idling
DO NOT ATTEMPT
ANY REPAIRS
DTC B00A0 is stored
Front passenger seat
rail-to-floor bolts
torque okay?
NO
Re-torque bolts by proper
sequence and torque specification
(refer to related ESM), and then
perform
Zero Point Reset
NO
YES
All related harnesses: Connections,
NO
pin fit/alignment okay?
Resolve connection/pin
fit/alignment issue, and then
perform Zero Point Reset
YES
Replace OCS sensors,
and then perform
Zero Point Reset
Did Zero Point Reset Complete?
NO
Was the “Re-torque bolts”
procedure above actually done?
NO
YES
YES
End
Replace OCS control unit, and then
perform
Zero Point Reset
Did Zero Point Reset Complete? NO
Replace the lower seat frame, and then
perform Zero Point Reset
YES
End
6/96/8
ITB14-042c
TROUBLESHOOTING
If you think the PABI light (
) is incorrect:
) is ON (illuminated) without a front seat passenger and no object(s) on
1. If the PABI light (
the front passenger seat:
Conditions that may cause the PABI light (
) to illuminate:
An object weighing over 2.2 lbs. (1 kg) hanging on the front passenger seat or placed in the
seatback pocket
A child seat or other object pressing against the rear of the seatback
A rear passenger pushing or pulling on the back of the front passenger seat
The front seat or seatback forced back against an object on the seat or floor behind it
An object placed under the front passenger seat
An object placed between the center console and front passenger seat cushion or between the
door and front passenger seat cushion
If the vehicle is moving, come to a stop when it is safe. Check and correct any of the above conditions. Restart
the vehicle, and then wait one minute (NOTE: A system check will be performed during which the PABI light
(
) will remain ON (illuminated) for about 7 seconds). If the PABI light ( ) is still ON (illuminated) after
the system check, the vehicle should be inspected by an Infiniti dealer as soon as possible.
2. If the PABI light (
) is ON (illuminated) with an adult occupying the front passenger seat:
The occupant is a small adult The PABI light (
) is functioning as intended. The front
passenger air bag is suppressed.
) to illuminate:
If the occupant is not a small adult, conditions that may cause the PABI light (
The occupant is not sitting upright, leaning against the seat back, and centered on the seat
cushion with feet comfortably extended to the floor.
A child seat or other object is pressing against the rear of the seatback.
A rear passenger is pushing or pulling on the back of the front passenger seat.
The front seat or seatback is forced back against an object on the rear seat
or floor behind it.
An object is placed under the front passenger seat.
An object is placed between the center console and front passenger seat cushion or between
the door and front passenger seat cushion.
If the vehicle is moving, come to a stop when it is safe. Check and correct any of the above conditions. Restart
the vehicle, and then wait one minute (NOTE: A system check will be performed during which the PABI light
(
) will remain ON (illuminated) for about 7 seconds). If the PABI light (
) is still ON (illuminated) after
the system check, the person should be advised not to ride in the front passenger seat and the vehicle should
be inspected by an Infiniti dealer as soon as possible.
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ITB14-042c
3. If the PABI light (
) is OFF (dark) with a small adult, child, or child restraint occupying the
front passenger seat:
This may be due to the weight sensors detecting one or more of the following loading conditions:
A small adult or child is not sitting upright, leaning against the front passenger seatback, and
centered on the front passenger seat cushion with feet comfortably extended to the floor.
The child restraint is not properly installed, as outlined in the Safety section (section 1) of the
Owner’s Manual.
An object weighing over 2.2 lbs. (1 kg) is hanging on the front passenger seat or placed in the
front passenger seatback pocket.
A child seat or other object is pressing against the rear of the front passenger seatback.
A rear passenger is pushing or pulling on the back of the front passenger seat.
The front passenger seat or seatback is forced back against an object on the rear seat or floor
behind it.
An object is placed under the front passenger seat.
An object is placed between the center console and front passenger seat cushion or between
the door and front passenger seat cushion.
If the vehicle is moving, come to a stop when it is safe. Check and correct any of the above conditions. Restart
the vehicle, and then wait one minute (NOTE: A system check will be performed during which the PABI light
(
) will remain ON (illuminated) for about 7 seconds). If the PABI light (
) is still OFF (dark) after the
system check, the small adult, child, or child restraint should be repositioned in the rear seat and the vehicle
should be inspected by an Infiniti dealer as soon as possible.
8/8
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ITB14-042c
Appendix
Customer Information for OCS Operation
NOTE:
If the OCS system is confirmed to be operating as designed or if the customer has additional
questions, provide the customer with the information below:
It is important to understand how the system operates. Section 1 of the Owner’s Manual has a
detailed description of how the occupant classification system is designed to operate in accordance
with federal regulations. The issues being described may indicate normal operation, depending on
the size of the front passenger seat occupant. We urge the customer to read that section of the
Owner’s Manual first. Then, if they still believe there is an issue, have them bring/return the vehicle
to the dealership for diagnosis by a trained service technician.
NORMAL OPERATION
In order for the OCS to classify the right front passenger based on weight, follow the precautions and steps
outlined below (with the vehicle parked and engine idling):
1. Adjust the seat as outlined in the Safety section (section 1) of the Owner’s Manual. Sit upright, leaning
against the seat back, and centered on the seat cushion with your feet comfortably extended to the
floor.
2. Fasten the seat belt as outlined in the Safety section (section 1) of the Owner’s Manual.
3. Remain in this position for 30 seconds or until the PABI light signals that the system has properly
classified the seat occupant.
4. Ensure proper classification by checking the PABI light (
).
5. Remember that the PABI light may remain illuminated if the front passenger seat is occupied by a small
statured adult. Federal regulations require that the air bag be suppressed if the OCS determines that
the seat is occupied by someone who does not meet the size threshold set by the U.S. government.
PRECAUTIONS
Make sure there are no objects: On the occupant’s lap; placed between the center console and front
passenger seat cushion; placed between the door and front passenger seat cushion.
Make sure there are no objects weighing over 2.2 lbs. (1 kg) hanging on the seat or placed in the
seatback pocket.
Make sure that a child seat or other object is not pressing against the rear of the seatback.
Make sure that a rear passenger is not pushing or pulling on the back of the front passenger seat.
Make sure that the front seat or seatback is not forced back against an object on the seat or floor
behind it.
Make sure there is no object(s) placed under the front passenger seat.
NOTE: This vehicle’s OCS locks the classification during driving, so it is important to confirm the
passenger is properly classified prior to driving. Also, the OCS may recalculate the weight of the
occupant when the vehicle comes to a stop, so front passenger seat occupants should continue to
remain seated as outlined above.
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ITB14-042c
Appendix
to ITB14-042c
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TSB/Document ID: ITB14-042C
Replacement Service Bulletin Number:
MFR Communication Date: 2016-04-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
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