sensor LINCOLN TOWN CAR 1999 Owners Manual

Do not block the sensor on the backside of the mirror since this may
impair proper mirror performance.
Press the control to turn the mirror
on or off.
The mirror will automatically return
to the normal state whenever the
vehicle is placed in R (Reverse)
(when the mirror is on) to ensure a
bright clear view when backing up.
TRUNK REMOTE CONTROL
The remote trunk release control is
located on the driver's door trim
panel and can be operated at any
time.
Use the key to lock and unlock the
release control.
FUEL DOOR RELEASE
Your vehicle is equipped with a
locking fuel door. To open the door,
press the control located on the
door.
COMP MIRROR
TRUNK
Controls and features
65

How does the air bag supplemental restraint system work?
The air bag SRS is designed to
activate when the vehicle sustains
sufficient longitudinal 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. Front air bags are designed to inflate in frontal and
near-frontal collisions, not rollover, side-impact, or rear-impacts.
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, it may also
cause minor burns, 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.
Seating and safety restraints
93

Several air bag system components get hot after inflation. Do not
touch them after inflation.
If the air bag is inflated,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.
²a readiness light and tone.
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 to theAir bag readiness
section in theInstrumentationchapter. 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 light are repaired.
AIR
BAG
Seating and safety restraints
94

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.
The air bag SRS is designed to activate when the vehicle sustains
sufficient 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.
Seating and safety restraints
96

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.
The Traction Controlysystem will allow your vehicle to make better use
of available traction on slippery surfaces. The system is a driver aid
which makes your vehicle easier to handle primarily on snow and ice
covered roads.
During Traction Controlyoperation you may hear an electric motor type
of sound coming from the engine compartment and the engine will not
ªrev-upº when you push further on the accelerator. This is normal
system behavior.
If you should become stuck in snow or ice or on a very slippery road
surface, try switching the Traction Controlysystem off. This may allow
excess wheel spin to ªdigº the vehicle out and enable a successful
ªrockingº maneuver.
If the Traction Controlysystem is cycled excessively, the brake portion
of the system will shut down to prevent the rear brakes from
overheating. A limited Traction Controlyfunction using only engine
torque reduction will still control wheels from over-spinning. When the
rear brakes have cooled down, the system will again function normally.
Anti-lock braking is not affected by this condition and will function
normally during the cool down period.
Traction control switch
The traction control switch is located on the left side of the glove
compartment. The traction control system defaults to ON when the
ignition key is turned from OFF to RUN.
Driving
112

The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingDescription
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), Park/Tail
Lamps
6 15A EATC, Heated Seats
7 15A Lighting Control Module (LCM), Day/Night
Sensor/Amplifier
8 10A Shift Lock, Speed Control, Air Suspension,
Steering Wheel Rotation Sensor
9 20A Lighting Control Module (LCM),
Multi-Function Switch , Hi Beam
Headlamps
10 20A Brake Pedal Position (BPP) Switch, Brake
Pressure Switch, Stop Lamps
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
126

Fuse/Relay
LocationFuse Amp
RatingDescription
11 10A Electronic Crash Sensor (Airbag)
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)
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
19 10A EATC, Clock, Instrument Cluster, PCM
20 7.5A Lighting Control Module (LCM), ABS, Shift
Lock
21 20A Multi-Function Switch, Hazard Lamps
22 20A Multi-Function Switch, High Mounted Stop
Lamps
23 20A Datalink Connector, I/P Cigar Lighter
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
Roadside emergencies
127

Fuse/Relay
LocationFuse Amp
RatingDescription
12 30A** Air Suspension
13 15A* Charging System
14 20A* Fuel Pump
15 Ð NOT USED
16 30A* Heated Seats
17 10A* Air Suspension
18 15A* Horn
19 30A* Subwoofer, I/P Fuse Panel, Fuse 33
20 15A* Fuel Injectors
21 15A* Heated Oxygen Sensors, Transmission
Solenoids, EVAP Canaster Vent Solenoid,
EGR Vacuum Regulator, EVAP Vapor
Management Valve
22 Ð Not Used
23 Ð Not Used
24 20A* Auxiliary Power Outlet
25 30A** Power Lumbar, Passenger Power Seat
26 30A CB Cooling Fan-Low Speed
27 Ð Not Used
Relay 1 Ð Fuel Pump Relay
Relay 2 Ð A/C Clutch Relay
Relay 3 Ð PCM Power Relay
Relay 4 Ð Air Suspension Relay
Relay 5 Ð Rear Defrost Relay
* Mini Fuses ** Maxi Fuses
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Roadside emergencies
130