2005 Mercury Montego sensor

•diagnostic module.
•and the electrical wiring which connects the components.
The diagnostic module monitors its own internal circuits and the
supplemental air bag electrical system wiring (including the impact
sensors), the system wiring, the air bag system readiness light, the air
bag back up power and the air bag ignitors.
Front passenger sensing system
The front passenger sensing system will turn off the front passenger’s
frontal airbag under certain conditions. For side airbag equipped
vehicles, the front passenger sensing system will turn off the passenger
seat side airbag if the seat is empty (unless for some reason the safety
belt is buckled). The front passenger sensing system works with sensors
that are part of the front passenger’s seat and safety belt. The sensors
are designed to detect the presence of a properly-seated occupant and
determine if the front passenger’s frontal airbag should be enabled (may
inflate) or not.
The front passenger sensing system is designed to meet the regulatory
requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208
and is designed to turn off the front passenger’s frontal airbag if:
•the front passenger seat is unoccupied, or has small/medium objects in
the front seat,
•the system determines that an infant is present in a rear-facing infant
seat that is installed according to the manufacturer’s instructions,
•the system determines that a small child is present in a forward-facing
child restraint that is installed according to the manufacturer’s
instructions,
•the system determines that a small child is present in a booster seat,
•a front passenger takes his/her weight off of the seat for a period of
time,
Even with the front passenger sensing system, children 12 and
under should be properly restrained in the back seat.
When the front passenger seat is
occupied and the sensing system
has turned off the passenger’s
frontal airbag, thepassenger airbag
offorpass airbag offindicator will light and stay lit to remind you that
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Seating and Safety Restraints
111

All occupants of the vehicle should always wear their safety belts
even when an air bag SRS is provided.
How does the side air bag system work?
The design and development of the side air bag system included
recommended testing procedures that were developed by a group of
automotive safety experts known as the Side Air Bag Technical Working
Group. These recommended testing procedures help reduce the risk of
injuries related to the deployment of side air bags.
The side air bag system consists of
the following:
•An inflatable nylon bag (air bag)
with a gas generator concealed
behind the outboard bolster of
the driver and front passenger
seatbacks.
•A special seat cover designed to
allow airbag deployment.
•The same warning light,
electronic control and diagnostic
unit as used for the front air
bags.
•Crash sensors located on the B
and C pillars (one sensor on each
pillar on each side of the vehicle).
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. If the front passenger sensing system
detects an empty seat, the front passenger seat-mounted side air bag will
be deactivated. 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 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
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Seating and Safety Restraints
115

All occupants of the vehicle including the driver should always
wear their safety belts even when an air bag SRS and Safety
Canopy
system is provided.
To reduce risk of injury, do not obstruct or place objects in the
deployment path of the inflatable Safety Canopy
.
How does the Safety Canopysystem work?
The design and development of the
Safety Canopy
system included
recommended testing procedures
that were developed by a group of
automotive safety experts known as
the Side Air Bag Technical Working
Group. These recommended testing
procedures help reduce the risk of
injuries related to the deployment of
side airbags (including the Safety
Canopy
).
The Safety Canopy
system
consists of the following:
•An inflatable nylon curtain with a
gas generator concealed behind
the headliner and above the doors
(one on each side of vehicle).
•A headliner designed to flex open
above the side doors to allow Safety Canopy
deployment.
•The same readiness airbag light, electronic control and diagnostic unit
as used for the front airbags.
•Two crash sensors mounted on the B pillar (one on each side of the
vehicle).
•Two crash sensors located at the C pillar behind the rear doors (one
on each side of the vehicle).
•Rollover sensor in the restraints control module (RCM).
The Safety Canopy
system, in combination with seat belts, can help
reduce the risk of severe injuries in the event of a significant side impact
collision or rollover event.
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Seating and Safety Restraints
117

Children 12 years old and under should always be properly restrained in
the second row seats. The Safety Canopy
will not interfere with
children restrained using a properly installed child or booster seat
because it is designed to inflate downward from the headliner above the
doors along the side window opening.
The Safety Canopy
system is designed to activate when the vehicle
sustains lateral deceleration sufficient to cause the side crash sensor to
close an electrical circuit that initiates Safety Canopy
inflation or when
a certain likelihood of a rollover event is detected by the rollover sensor.
The Safety Canopy
is mounted to roof side-rail sheet metal, behind the
headliner, along the entire side of the vehicle. In certain lateral collisions
or rollover events, the Safety Canopy
system will be activated,
regardless of which seats are occupied. The Safety Canopy
is designed
to inflate between the side window area and occupants to further
enhance protection provided in side impact collisions and rollover events.
The fact that the Safety Canopy
did not activate 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. The Safety
Canopy
is designed to inflate in certain side impact collisions or
rollover events, not in rear impact, frontal or near-frontal collisions,
unless the collision causes sufficient lateral deceleration or rollover
likelihood.
Several Safety Canopy
system components get hot after
inflation. Do not touch them after inflation.
If the Safety Canopy

system has deployed,the
Safety Canopy
will not
function again unless replaced.
The Safety Canopy
system
(including the A, B, and C
pillar trim) must be inspected
and serviced by a qualified
technician in accordance with
the vehicle service manual.If
the Safety Canopy
is not
replaced, the unrepaired area will
increase the risk of injury in a
collision.
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Seating and Safety Restraints
118

is especially useful on slippery road surfaces. The system operates by
detecting and controlling wheel spin. The system borrows many of the
electronic elements already present in the anti-lock braking system
(ABS).
Wheel-speed sensors allow excess wheel spin to be detected by the
Traction Control
portion of the ABS computer. Excess wheel spin is
controlled through engine torque reduction. This is realized via the fully
electronic engine control system. This process is very sensitive to driving
conditions and very fast acting. The wheels “search” for optimum
traction several times a second and adjustments are made accordingly.
The Traction Control
system 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 Control
operation the engine will not “rev-up” when
you push further on the accelerator. This is normal system behavior.
If you should become stuck in deep
snow or on a very slippery road
surface, try switching the Traction
Control
system off. This may allow
excess wheel spin to “dig” the
vehicle out or enable a successful
“rocking” maneuver.
Aggressive driving in any road conditions can cause you to lose
control of your vehicle increasing the risk of severe personal
injury or property damage. The occurrence of a Traction Control

event is an indication that at least some of the tires have exceeded
their ability to grip the road; this may lead to an increased risk of loss
of vehicle control, vehicle rollover, personal injury and death. If you
experience a severe road event, SLOW DOWN.
STEERING
To prevent damage to the power steering system, never hold the steering
wheel at its furthest turning points (until it stops) for more than a few
seconds when the engine is running.
It is also important to maintain a proper power steering fluid level in the
power steering fluid reservoir:
•Do not operate the vehicle with a low power steering pump fluid level
(below the MIN mark on the reservoir).
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Driving
168

indicator light on the control will illuminate when the system is turned
off. If the indicator light illuminates when the RSS is not turned off, it
may indicate a failure in the RSS.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the
sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
ALL WHEEL DRIVE (AWD) SYSTEM (IF EQUIPPED)
Your vehicle may be equipped with a full-time All Wheel Drive (AWD)
system. With the AWD option, power will be delivered to the front
wheels and distributed to the rear wheels as needed. The AWD system is
active all the time and requires no input from the operator.
All components of the AWD system are sealed for life and require no
maintenance.
If your vehicle is equipped with AWD, a spare tire of a different size
other than the tire provided should never be used. A dissimilar spare tire
size (other than the spare tire provided) or major dissimilar tire sizes
between the front and rear axles could cause the AWD system to stop
functioning and default to front wheel drive.
Note:Your AWD vehicle is not intended for off-road use. The AWD
feature gives your vehicle some limited off-road capabilities in which
driving surfaces are relatively level, obstruction-free and otherwise
similar to normal on-road driving conditions. Operating your vehicle
under other than those conditions could subject the vehicle to excessive
stress which might result in damage which is not covered under your
warranty.
Driving off-highway with AWD vehicles
AWD vehicles are specially equipped for driving on sand, snow, mud and
rough roads and have operating characteristics that are somewhat
different from conventional vehicles, both on and off the highway.
When driving at slow speeds off-highway under high outside
temperatures, use L (Low) gear when possible. L (Low) gear operation
will maximize the engine and transmission cooling capability.
Under severe operating conditions, the A/C may cycle on and off to
protect overheating of the engine.
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Driving
175

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
F17 30A Rear defroster
F18 10A PCM relay coil, Shifter Brake-Shift
Interlock (BSI), Passive
Anti-Theft System (PATS)
module, Fuel relay coil, Brake
lamps, Center High-Mounted Stop
Lamp (CHMSL)
F19 10A Anti-lock Brake System
(ABS)/Traction control module,
All Wheel Drive (AWD) module,
RSS, Heated seat modules
F20 7.5A Cluster, Climate control
F21 7.5A Restraint Control Module (RCM)
F22 7.5A Electrochromatic mirror, Compass
module
F23 7.5A Wiper relay coil, Blower relay coil,
Cluster logic
F24 7.5A Occupant Classification Sensor
(OCS), Passenger Air bag
Deactivation (PAD)
C1 30A Circuit
breakerDelayed accessory (Front
passenger window, Rear passenger
windows [via window switch],
Window switch illumination,
Backlighting
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
Always disconnect the battery before servicing high current
fuses.
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Roadside Emergencies
187

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
33 30A* Driver seat motors, Memory
module
34 30A* Ignition switch (to SJB)
35 — Not used
36 40A* Front A/C blower motor
37 30A** Front wiper, Front washer
38 5A** Heated Positive Crankcase
Ventilation (PCV) valve
39 — Not used
40 10A** TCM, EVMV, Canister vent, ESM,
Exhaust Gas Oxygen heaters, A/C
clutch
41 15A** PCM, Injectors, Ignition coils,
Mass Air Flow (MAF) sensor
42 — Not used
43 — Not used
44 — Not used
45 — Not used
46 — Not used
47 — Not used
48
12ISO relay Fog lamps
49 — Not used
50 — Not used
51
12ISO relay A/C clutch
52 — Not used
53
12ISO relay Fuel pump driver module, Fuel
pump
54 — Not used
55 Full ISO relay PCM relay, PDB fuses 40 and 41
56 Full ISO relay Starter motor solenoid
57 Full ISO relay Front A/C blower motor
2005 Montego(mgo)
Owners Guide (post-2002-fmt)
USA_English(fus)
Roadside Emergencies
190