2002 LINCOLN TOWN CAR sensor

The air bags inflate and deflate
rapidly upon activation. After air bag
deployment, it is normal to notice a
smoke-like, powdery residue or
smell the burnt propellant. This may
consist of cornstarch, talcum
powder (to lubricate the bag) or
sodium compounds (e.g., baking
soda) that result from the
combustion process that inflates the
air bag. Small amounts of sodium
hydroxide may be present which
may irritate the skin and eyes, but
none of the residue is toxic.
While the system is designed to help
reduce serious injuries, contact with
a deploying air bag may also cause abrasions, swelling or temporary
hearing loss. Because air bags must inflate rapidly and with considerable
force, there is the risk of death or serious injuries such as fractures,
facial and eye injuries or internal injuries, particularly to occupants who
are not properly restrained or are otherwise out of position at the time
of air bag deployment. Thus, it is extremely important that occupants be
properly restrained as far away from the air bag module as possible while
maintaining vehicle control.
Several air bag system components get hot after inflation. Do not
touch them after inflation.
If the air bag has deployed,the air bag will not function
again and must be replaced immediately.If the air bag is not
replaced, the unrepaired area will increase the risk of injury in a
collision.
The SRS consists of:
²driver and passenger air bag modules (which include the inflators and
air bags).
²side air bags (if equipped). Refer toSide air bag systemlater in this
chapter.
²one or more impact and safing sensors.
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124

²a readiness light and tone.
²diagnostic module.
²and the electrical wiring which connects the components.
The diagnostic module monitors its own internal circuits and the
supplemental air bag electrical system warning (including the impact
sensors), the system wiring, the air bag system readiness light, the air
bag back up power and the air bag ignitors.
Determining if the system is operational
The SRS uses a readiness light in the instrument cluster or a tone to
indicate the condition of the system. Refer toAir bag readinesssection
in theInstrument clusterchapter. Routine maintenance of the air bag is
not required.
A difficulty with the system is indicated by one or more of the following:
²The readiness light will either
flash or stay lit.
²The readiness light will not
illuminate immediately after
ignition is turned on.
²A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and/or light are repaired.
If any of these things happen, even intermittently, have the SRS serviced
at your dealership or by a qualified technician immediately. Unless
serviced, the system may not function properly in the event of a
collision.
Side air bag system (if equipped)
Do not place objects or mount equipment on or near the air bag
cover on the side of the seatbacks of the front seats or in front
seat areas that may come into contact with a deploying air bag. Failure
to follow these instructions may increase the risk of personal injury in
the event of a collision.
Do not use accessory seat covers. The use of accessory seat
covers may prevent the deployment of the side air bags and
increase the risk of injury in an accident.
AIR
BAG
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125

Do not lean your head on the door. The side air bag could injure
you as it deploys from the side of the seatback.
Do not attempt to service, repair, or modify the air bag
supplemental restraint system, its fuses or the seat cover on a
seat containing an air bag. See your Ford or Lincoln Mercury dealer.
All occupants of the vehicle including the driver should always
wear their safety belts even when an air bag SRS is provided.
How does the side air bag system work?
The side air bag system consists of
the following:
²An inflatable nylon bag (air bag)
with a gas generator concealed
behind the outboard bolster of
the driver and front passenger
seatbacks.
²A special seat cover designed to
allow airbag deployment.
²The same warning light,
electronic control and diagnostic
unit as used for the front air
bags.
²Two crash sensors located under
the outboard side of the front
seats, attached to the floor.
Side air bags, in combination with seat belts, can help reduce the risk of
severe injuries in the event of a significant side impact collision.
The side air bags are fitted on the outboard side of the seatbacks of the
front seats. In certain lateral collisions, the air bag on the side affected
by the collision will be inflated, even if the respective seat is not
occupied. The air bag was designed to inflate between the door panel
and occupant to further enhance the protection provided occupants in
side impact collisions.
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126

The air bag SRS is designed to activate when the vehicle sustains lateral
deceleration sufficient to cause the sensors to close an electrical circuit
that initiates air bag inflation.
The fact that the air bags did not inflate in a collision does not mean that
something is wrong with the system. Rather, it means the forces were
not of the type sufficient to cause activation. Side air bags are designed
to inflate in side-impact collisions, not roll-over, rear-impact, frontal or
near-frontal collisions, unless the collision causes sufficient lateral
deceleration.
Several air bag system
components get hot after
inflation. Do not touch them after
inflation.
If the side air bag has
deployed,the air bag will
not function again. The side
air bag system (including the
seat) must be inspected and
serviced by a qualified
technician in accordance with
the vehicle service manual.If
the air bag is not replaced, the
unrepaired area will increase the
risk of injury in a collision.
Determining if the system is operational
The SRS uses a readiness light in the instrument cluster or a tone to
indicate the condition of the system. Refer to theAir bag readiness
section in theInstrument clusterchapter. Routine maintenance of the
side air bag is not required.
A difficulty with the system is indicated by one or more of the following:
²The readiness light (same light as for front air bag system) will either
flash or stay lit.
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127

Your vehicle has an automatic parking brake release. To release the
parking brake:
1. Turn the ignition to the ON position.
2. Press the brake pedal.
3. Move the gearshift from the P (Park) position to one of the forward
gears (the parking brake will not release automatically when you shift
into reverse). The brake pedal must remain pressed while the gearshift is
moved.
If the parking brake fails to release
after completing this procedure, use
the manual parking brake release
lever.
Pull the lever to manually release
the parking brake.
TRACTION CONTROLY
For Traction Controlywarning lights refer toWarning Lightsin the
Instrumentationchapter.
Your vehicle may be equipped with the optional Traction Controly
system. This system helps you maintain the stability and steerability of
your vehicle. It is especially useful on slippery and/or hilly road surfaces.
The system operates by detecting and controlling wheel spin. The system
borrows many of the electronic and mechanical elements already present
in the anti-lock braking system (ABS).
Wheel-speed sensors allow excess rear wheel spin to be detected by the
Traction Controlyportion of the ABS computer. Any excessive wheel
spin is controlled by automatically applying and releasing the rear brakes
in conjunction with engine torque reductions. Engine torque reduction is
realized via the fully electronic spark and fuel injection systems. This
process is very sensitive to driving conditions and very fast acting. The
rear wheels ªsearchº for optimum traction several times a second and
adjustments are made accordingly.
HOOD
Driving
143

The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 10A Lighting Control Module (LCM),
Left-Hand Low Beam Headlamp
2 30A EATC Blower Motor
3 10A Lighting Control Module (LCM),
Right-Hand Low Beam Headlamp
4 7.5A Instrument Cluster
5 7.5A Lighting Control Module (LCM),
Instrument Panel Light
6 15A EATC, Heated Seats
7 15A Lighting Control Module (LCM),
Day/Night Sensor/Amplifier,
Park/Tail Lamps
8 10A Shift Lock, Speed Control, Air
Suspension, Steering Wheel
Rotation Sensor
27 25
26 2423 21
2219
20
18 16
17 1514 12
1310
33
31
2932
30
28 11
97
8653
41
2RELAY
1
Roadside Emergencies
160

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
9 20A Lighting Control Module (LCM),
Multi-Function Switch, Hi Beam
Headlamps
10 10A Restraint Control Module (RCM),
Air Bags
11 Ð Not Used
12 15A Instrument Cluster, Anti-Theft,
Ignition Switch, Ignition Coils
13 10A Anti-Lock Brake Module, Traction
Control Switch
14 7.5A Transmission Control Switch,
Lighting Control Module (LCM),
VCS
15 20A Multi-Function Switch, Turn
Signals
16 30A Wiper Control Module (WCM),
Windshield Wiper Motor
17 10A Digital Transmission Range (DTR)
Sensor, Back-Up Lamps, EC
Mirrors
18 7.5A Lighting Control Module (LCM),
Front Radio Control Unit, Cellular
Telephone Transceiver, Electronic
Day/Night Mirror, Compass
Module/Rear Audio/Climate
Control Module, VCS
19 10A EATC, Clock, Instrument Cluster,
PCM
20 7.5A Lighting Control Module (LCM),
ABS, Shift Lock
21 20A Multi-Function Switch, Hazard
Lamps
Roadside Emergencies
161

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
22 20A Multi-Function Switch, High
Mounted Stop Lamps, Stop Lamps
23 20A Datalink Connector, I/P Cigar
Lighter, Reardoor Cigar Lighters
(Long Wheel Base Only)
24 5A Front Radio Control Unit
25 15A Lighting Control Module (LCM),
Courtesy/Demand Lamps
26 5A Digital Transmission Range (DTR)
Sensor, Starter Relay Coil
27 20A Fuel Filler Door Release Switch
28 10A Heated Mirrors
29 20A LF Door Module, Door Locks,
Decklid Release
30 7.5A LF Seat Module, Trunk Lid
Release Switch, Door Lock
Switches, LF Seat Control Switch,
LF Door Module, Power Mirror
Switch
31 7.5A Main Light Switch, Lighting
Control Module (LCM)
32 25A Brake Pedal Position Switch
(BPP), Brake Pressure Switch,
Fuses 20 and 22
33 15A Front Radio Control Unit, Digital
Compact Disk Changer, Cellular
Telephone Transceiver, VCS
Relay 1 Ð Accessory Delay Relay
(Signature/Cartier) or Power
Window Relay (Executive)
Roadside Emergencies
162