Lincoln Aviator: Supplemental Restraint System / Description and Operation - Airbag and Seatbelt Pretensioner Supplemental Restraint System (SRS) - Overview
Overview
The RCM continually receives and monitors inputs from the OCSM and various other hard-wired switches and sensors. If the RCM
detects a sudden vehicle deceleration and/or lateral deceleration based
on the information received from the various sensors and determines
that deployment is necessary, it applies voltage and current to deploy
the appropriate SRS components.
The SRS
utilizes Connector Position Assurance (CPA) tabs on deployable
component connectors. The tabs disengage the shorting bars of the
deployable component from its electrical pins and keeps the harness
connector securely attached to the deployable component.
If
the connector is attached to the deployable component yet the tab is
not fully seated, the pins of the connector still make contact with the
deployable component pins. However, because the tab is not fully seated
and the shorting bars are still applied to the deployable component
pins, the RCM detects a
fault (circuit resistance below threshold) during self-diagnostics when
the vehicle is powered on (airbag warning indicator is illuminated).
System Operation
System Diagram - Supplemental Restraint System (SRS)
Item
Description
1
RCM
2
Ignition Switch
3
GWM
4
Driver Seatbelt Buckle Switch
5
Passenger Seatbelt Buckle Switch
6
RHFront Impact Severity Sensor
7
Driver Door Side Impact Sensor
8
Driver C-Pillar Side Impact Sensor
9
Passenger Belt Tension Sensor (BTS)
10
Passenger Seat Position Sensor
11
Driver Seat Position Sensor
12
APIM
13
Passenger Door Side Impact Sensor
14
BCM
15
Driver Second Row Seatbelt Buckle Switch
16
Passenger Second Row Seatbelt Buckle Switch
17
LH Front Impact Severity Sensor
18
OCSM
19
Center Second Row Seatbelt Buckle Switch
20
Passenger C-Pillar Side Impact Sensor
21
Driver Third Row Seatbelt Buckle Switch
22
Passenger Third Row Seatbelt Buckle Switch
23
IPC
Item
Description
1
Passenger Seatbelt Anchor Pretensioner
2
Driver Seatbelt Anchor Pretensioner
3
Driver Seatbelt Retractor Pretensioner
4
Passenger Side Curtain Airbag
5
Driver Side Curtain Airbag
6
Passenger Side Airbag
7
Driver Side Airbag
8
Passenger Airbag (Stages 1 and 2)
9
Driver Airbag (Stages 1 and 2)
10
RCM
11
BCM
12
Passenger Seatbelt Adaptive Load Limiter
13
Passenger Seatbelt Retractor Pretensioner
14
Passenger Load Limiting Retractor
15
Passenger Airbag Vent (if equipped)
16
Passenger Knee Airbag
17
Driver Knee Airbag
18
Driver Second Row Seatbelt Retractor
19
Passenger Second Row Seatbelt Retractor
Network Message Chart - Supplemental Restraint System (SRS)
Module Network Input Messages - RCM
Broadcast Message
Originating Module
Message Purpose
eCall confirmation
APIM
Used for SYNC® 911 Assist™ operation...
Other information:
Removal
NOTE:
Removal steps in this procedure may contain installation details.
Fully lower the glove compartment.
Disconnect the check strap.
Push the stop tabs inward.
Disconnect the passenger footwell air discharge temperature sensor...
Special Tool(s) /
General Equipment
Two Leg Puller
Removal
Remove the rear spoiler.
Refer to: Rear Spoiler (501-08 Exterior Trim and Ornamentation, Removal and Installation).
Remove the rear window wiper pivot arm nut...