

Only move side trim enough to
access back of harness clip.

Back of harness clip

Seat side trim
Figure 17
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Seat trim clip
25. Unfasten seat trim clip from seat frame
near OCS sensor at rear of seat.


Seat trim does not need to be
removed from seat.

26. Disconnect OCS sensor at rear of seat.
OCS sensor
Figure 18

27. At this point, the old OCS harness is disconnected from all connections and mounting
points and can be completely removed from the seat.

28. Replace OCS control unit.


OCS control unit is held on with 2 screws.



Use new OCS control unit listed in the Parts Information.

Seatbelt harness pass through

29. Install new seatbelt buckle.


Torque seatbelt buckle anchor bolt
to: 49 N•m (5.0 kg-m, 36 ft-lb).

30. Route new seatbelt harness through
seat frame pass-through.
Seatbelt buckle
anchor bolt

31. Attach seatbelt buckle harness clip.
Harness clip
Figure 19

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32. Connect new seatbelt buckle harness
connector to seat frame.
Seatbelt buckle
harness connector
33. Attach seatbelt buckle harness clip.

Harness clip

Figure 20

34. Install new OCS harness in same
location as old OCS harness.


Connecting the rear OCS sensor
electrical connector first will aid in
new OCS harness installation.

Rear OCS sensor
harness has 1 clip

Front OCS
sensor harness
has 2 clips

Figure 21

35. Continue installation of the new OCS harness in reverse order of removal (refer to step
26 and work backwards to step 14).

36. Reinstall front passenger seat drawer.

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37. Reinstall the seat into the vehicle in
reverse order of removal.


Reconnect vehicle harnesses to seat
harnesses.



Torque mounting bolts to: 40 N•m
(4.1 kg-m, 30 ft-lb).



Refer to Figure 22 for torque
sequence.
Figure 22

38. Reconnect the battery cables, positive cable first.

39. 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.

40. 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

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 15.

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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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

DESCRIPTION

Empty

Empty front passenger seat
Bag or Child or Child Restraint
Nobody/Somebody
or Small Adult in the front
passenger seat
Adult
Adult in front passenger seat

ON (illuminated)

FRONT
PASSENGER AIR
BAG STATUS
DISABLED

ON (illuminated)

DISABLED

OFF (dark)

ENABLED

PASSENGER AIR BAG
INDICATOR LIGHT

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 – 9SE0A

1

Seatbelt Buckle – Black

86842 – 9SF8A

1

OCS Harness

87019 – 9SB1B

1

CLAIMS INFORMATION
Submit a “CM” line claim using the following claims coding:
CM ID

DESCRIPTION

OP CODE

FRT

P7322

Perform OCS Retrofit

P73221

1.0 hr.

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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.

CONDITION

DESCRIPTION

PASSENGER AIR BAG
INDICATOR LIGHT

Empty

Empty front passenger seat

ON (illuminated)

FRONT
PASSENGER AIR
BAG STATUS
DISABLED

ON (illuminated)

DISABLED

OFF (dark)

ENABLED

Nobody/Somebody
Adult

Bag or Child or Child Restraint
or Small Adult in the front
passenger seat
Adult in front passenger seat

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