Lincoln Aviator: Supplemental Restraint System / Removal and Installation - Occupant Classification System (OCS) Sensor - Vehicles With: Multi-Contour Seats
Special Tool(s) /
General Equipment
Removal
WARNING:
The following procedure prescribes critical repair steps
required for correct restraint system operation during a crash. Follow
all notes and steps carefully. Failure to follow step instructions may
result in incorrect operation of the restraint system and increases the
risk of serious personal injury or death in a crash.
NOTICE:
To prevent system failure, carry out the OCS (occupant
classification system) reset when a front passenger seat cushion is
disassembled, a new trim cover or heater mat is installed or an OCS
(occupant classification system) service kit is installed. Use a
diagnostic scan tool to carry out the OCS (occupant classification
system) reset command.
NOTE:
The OCS (occupant classification system) components (seat
cushion foam and trim cover, plastic carrier, and OCS (occupant
classification system) bladder with OCSM (occupant classification system
module), MCS (multi-contour seat) bolster bladders (optional),
heat/vent bag (optional)) are calibrated to each other and serviced as
an assembly. The OCS (occupant classification system) service kit
components are not to be installed separately. If a new OCS (occupant
classification system) or OCS (occupant classification system)
components are needed, a new OCS (occupant classification system)
service kit must be installed. A new passenger seat cushion cover and
the heater mat can be installed separately.
NOTE:
Removal steps in this procedure may contain installation details.
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WARNING:
Before beginning any service procedure in this
manual, refer to health and safety warnings in section 100-00 General
Information. Failure to follow this instruction may result in serious
personal injury.
Refer to: Pyrotechnic Device Health and Safety Precautions (100-00 General Information, Description and Operation).
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Raise and extend the front seat leg extensions.
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NOTE:
Follow the unique instructions or graphic for this step in the installation.
Remove the front passenger seat.
Refer to: Front Seat (501-10A Front Seats, Removal and Installation).
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Release the front seat backrest panel straps.
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Detach the electrical connector and wiring harness retainers and position them aside.
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Detach the backrest cover straps.
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Disconnect the front seat cushion heater mat electrical connector.
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Disconnect the OCS sensor electrical connector.
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Remove the screw and position the OCS sensor and bracket aside.
Torque:
44 lb.in (5 Nm)
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Release the front seat cushion cover J-clips from the leg extensions.
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Remove the front seat backrest panel with power head restraint.
Refer to: Front Seat Backrest Panel (501-10A Front Seats, Removal and Installation).
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NOTE:
After disconnecting the hose and lock assemblies,
verify the black O-ring and white spacer remains with each hose.
NOTE:
When connecting the hose and lock assemblies, an audible click must be heard for correct installation.
Detach the multi-contour seat cushion hose retainers,
release the locking tab, disconnect the hose coupling from the SCMH and route the hose assembly out from the backrest.
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At the attachment points, slide the front seat cushion and OCS assembly rearward and upward, detaching the carrier from the cushion module.
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NOTE:
Only the carrier portion of the seat cushion and OCS (occupant classification system) assembly is shown.
Push the rear of the front seat cushion and OCS assembly up, disengaging the carrier from the locator pins.
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Pull the seat cushion and OCS assembly out from between the seat track and backrest.
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NOTE:
For correct installation, note the location of the
cushion heater mat wiring harness pigtail as it passes through the seat.
Remove the front seat cushion foam and cover as an assembly.
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Pull the front seat cushion cover, foam and heater mat pigtail out from between the seat track and backrest.
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NOTE:
For proper installation, note the location of the
OCS (occupant classification system) hose and multi-contour seat hose
assembly as they pass through the seat.
NOTE:
Follow the unique instructions or graphic for this step in the installation.
Remove the front seat cushion and OCS assembly.
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Lift the front seat cushion and OCS assembly off the seat track.
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NOTICE:
During installation, do not kink the OCS
(occupant classification system) hose or the SRS (supplemental restraint
system) will not operate correctly.
Route out the OCS hose with sensor.
-
NOTICE:
During installation, do not kink the
multi-contour seat hose assembly or the multi-contour seat will not
operate correctly.
If equipped with multi-contour seat.
Route out the multi-contour seat hose assembly.
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NOTE:
This step is only necessary if installing a new OCS (occupant classification system).
NOTE:
Follow the unique instructions or graphic for this step in the installation.
Bend the tab away from the OCS sensor and slide the sensor off the bracket.
Installation
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NOTICE:
Inspect the OCS (occupant classification system)
bladder, seat cushion pan and support assembly for any foreign objects
before installing the OCS (occupant classification system) to the seat
cushion pan. Remove any foreign objects. Failure to follow these
instructions may result in incorrect operation of the OCS (occupant
classification system) and may cause system failure.
NOTICE:
Do not trap the pressure sensor hose incorrectly
over the seat's suspension or spring. Route the hose so that it lays in a
natural bend, and is not twisted due to being forced into an unnatural
position. Failure to follow these instructions may result in component
damage and/or system failure.
To install, reverse the removal procedure.
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If required.
Install a new cushion heater mat.
Refer to: Seat Heater Mat Installation (501-10A Front Seats, General Procedures).
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Bend the OCS sensor bracket tab back.
Use the General Equipment: Flat Headed Screw Driver
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Install the front passenger seat. Do not prove out the SRS at this time.
Refer to: Front Seat (501-10A Front Seats, Removal and Installation).
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WARNING:
Occupant Classification System (OCS) parts are
calibrated as an assembly and must only be replaced in the configuration
they are sold. Never separate parts of an assembly. Failure to follow
this instruction may result in incorrect operation of the OCS and
increases the risk of serious personal injury or death in a crash.
WARNING:
Make sure the front passenger seat repair is
complete, the seat and all attached components (head restraint, seat
side shield, etc.) are correctly assembled, and the seat is correctly
installed to the vehicle before using System Reset to rezero the seat
weight. Failure to follow these instructions may result in incorrect
operation of the occupant classification system (OCS) and increases the
risk of serious personal injury or death in a crash.
NOTICE:
To prevent system failure, take the following
precautions before carrying out the OCS (occupant classification system)
reset.
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Make sure the voltage to the OCSM is greater than 8 volts and less than 18 volts.
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Make sure the OCS is not below 6º C (42.8º F) or above 36º C (96.7º F) when initiating the OCS
reset process. If the vehicle has been exposed to extreme cold or hot
temperatures, the vehicle must be exposed and kept at a temperature
between 6º C (42.8º F) to 36º C (96.7º F) for a minimum of 30 minutes.
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Make sure nothing is present on the passenger seat before and during the OCS reset process.
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Prior to carrying out the OCS reset, make sure a minimum of 8 seconds has elapsed after cycling the ignition switch on.
Using a diagnostic scan tool, carry out the OCS reset. Cycle the ignition switch after the OCS reset.
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If the first system reset attempt was successful, proceed to prove out the SRS.
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If the first system reset attempt was not successful, carry out a thorough visual inspection of the OCS
connector and wiring for damage, pressure sensor hose for kinks and or
damage, and seat-related wiring harness and body wiring harness
terminals and connectors for damage. Repair any concerns found and
proceed to the next step.
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Carry out a second OCS reset. Cycle the ignition switch after the OCS reset. If the second attempt is unsuccessful, install a new OCS service kit.
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Prove out the SRS.
Verify all airbags are installed and connected and the ignition is OFF.
Wait 10 seconds then turn the ignition ON and monitor the airbag
warning indicator. The airbag warning indicator illuminates continuously
for approximately 6 seconds and turns off. Continue to monitor the
airbag warning indicator for approximately 30 seconds, as this is the
time required for the RCM to complete testing of the SRS.
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If a SRS
fault is present, the airbag warning indicator either fails to light,
remains lit continuously or flashes. The flashing may not occur until
approximately 30 seconds after the ignition has been turned from OFF to
ON. If this occurs, diagnose and repair any SRS faults before proceeding with other repairs.
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If, after the ignition has been turned on for 30
seconds, the airbag warning indicator remains unlit with no chime or SRS message displayed in the message center, no SRS fault is present.
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If the airbag warning indicator is inoperative and a SRS
fault exists, a chime sounds in a pattern of 5 sets of 5 beeps or a
message displays in the message center. If this occurs, diagnose and
repair the airbag warning indicator and any SRS faults before proceeding with other repairs.
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Using a diagnostic scan tool, clear all Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.
Removal
WARNING:
The following procedure prescribes critical repair steps
required for correct restraint system operation during a crash. Follow
all notes and steps carefully...
Special Tool(s) /
General Equipment
Flat Headed Screw Driver
Removal
WARNING:
The following procedure prescribes critical repair steps
required for correct restraint system operation during a crash...
Other information:
System Operation
Parking Aid - Audible
System Diagram - Without 360 Degree View Camera
Item
Description
1
PAM
2
LHR outer sensor
3
LHF outer sensor
4
LHF inner sensor
5
RHF inner sensor
6
RHR outer sensor
7
RHF outer sensor
8
RHR inner sensor
9
LHR inner sensor
10
Parking aid disable switch
11
PCM
12
ABS module
13
GWM
14
TRM
15
BCM
16
ACM
17
IPC
18
APIM
19
DSP
20
Rear door speakers
21
Front door speakers
22
with 14 or 28 speaker system
System Diagram - With 360 Degree View Camera
Item
Description
1
PCM
2
IPMB
3
LHR outer sensor
4
ABS module
5
GWM
6
TRM
7
BCM
8
ACM
9
IPC
10
APIM
11
DSP
12
Rear door speakers
13
Front door speakers
14
LHF outer sensor
15
LHF inner sensor
16
RHF inner sensor
17
RHR outer sensor
18
RHF outer sensor
19
RHR inner sensor
20
LHR inner sensor
21
Right front active sensor
22
Left front active sensor
23
Right rear active sensor
24
Left rear active sensor
25
Parking aid disable switch
26
PAM
27
with 14 or 28 speaker system
Network Message Chart
PAM Network Input Messages
Broadcast Message
Originating Module
Message Purpose
Gear position
PCM
Enables or disables the front or rear parking aid depending on the gear lever position...
Special Tool(s) /
General Equipment
Resistance Spotwelding Equipment
Spherical Cutter
Hot Air Gun
Air Body Saw
8 mm Drill Bit
MIG/MAG Welding Equipment
Spot Weld Drill Bit
Locking Pliers
Materials
Name
Specification
Seam SealerTA-2-B, 3M™ 08308, LORD Fusor® 803DTM
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Flexible Foam Repair3M™ 08463, LORD Fusor® 121
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Removal
WARNING:
Electric vehicles damaged by a crash may have compromised
high voltage safety systems and present a potential high voltage
electrical shock hazard...