relay Mercury Grand Marquis 2005 Owner's Manuals

Seating and Safety Restraints 91
Seating 91
Safety restraints 96
Airbags 110
Child restraints 121
Tires, Wheels and Loading 132
Tire Information 132
Changing tires 137
Lug Nut Torque 143
Vehicle loading 153
Trailer towing 159
Recreational towing 162
Driving 163
Starting 163
Brakes 167
Traction control 170
Air suspension 172
Transmission operation 173
Roadside Emergencies 180
Getting roadside assistance 180
Hazard flasher switch 181
Fuel pump shut-off switch 181
Fuses and relays 182
Jump starting 190
Wrecker towing 195
Customer Assistance 196
Reporting safety defects (U.S. only) 204
Cleaning 205
Table of Contents
2
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)

This system keeps the rear of your vehicle at a constant level by
automatically adding air or releasing air from the springs.
If you exceed the load limit, the rear air suspension may not operate.
The air suspension shut-off switch is
located on the left side of the trunk.
If this switch is in the OFF position,
the rear air suspension will not
operate.
On vehicles equipped with
Air Suspension, turn OFF
the Air Suspension switch prior to
jacking, hoisting or towing your
vehicle.
Normal vehicle operation does not
require any action by the driver.
AUTOMATIC TRANSMISSION OPERATION
Brake-shift interlock – column-shift transmission
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the ON position unless brake pedal is depressed.
If you cannot move the gearshift lever out of P (Park) with ignition in
the ON position and the brake pedal depressed, it is possible that a fuse
has blown or the vehicle’s brakelamps are not operating properly. Refer
toFuses and relaysin theRoadside Emergencieschapter.
If the fuse is not blown, perform the following procedure:
1. Apply the parking brake, turn the ignition to 2 (ACC).
AIR SUSPENSION
SWITCH
INTERRUPTEUR DE
LA SUSPENSION
PNEUMATIQUE
WARNING
AVERTISSEMENTOFF-ARRET
To prevent sudden
vehicle movement,
turn off air suspen-
sion switch prior to
jacking, hoisting or
towing vehicle.
Pour prévenir tout mouvement soudain du véhi-
cule, placer à l'arrêt l'interrupteur de la suspension
pneumatique avant de lever le véhicule (cric ou
pont élévateur) ou de le remorquer.
OFF
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
173

2. Insert the key and turn it to ACC.Apply the brake pedal and shift
to N (Neutral).
When the key is in the ignition and in the ACC position, the
automatic transmission shift lever can be moved from the P
(Park) position without the brake pedal depressed. To avoid unwanted
vehicle movement, always set the parking brake.
3. Start the vehicle.
If it is necessary to use the above procedure to move the gearshift lever,
it is possible that a fuse has blown or the vehicle’s brakelamps are not
operating properly. Refer toFuses and relaysin theRoadside
Emergencieschapter.
Do not drive your vehicle until you verify that the brakelamps
are working.
Always set the parking brake fully and make sure the gearshift is
latched in P (Park). Turn the ignition to the LOCK position and
remove the key whenever you leave your vehicle.
If the parking brake is fully released, but the brake warning lamp
remains illuminated, the brakes may not be working properly.
See your dealer or a qualified service technician.
Understanding the gearshift positions of the 4–speed automatic
transmission
P (Park)
This position locks the transmission and prevents the rear wheels from
turning.
To put your vehicle in gear:
•Start the engine
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driving
175

The fuel pump shut-off switch is
located on the left side of the trunk
behind the left rear tail light and the
trunk liner.
Use the following procedure to reset the fuel pump shut-off switch.
1. Turn the ignition to the OFF position.
2. Check the fuel system for leaks.
3. If no fuel leak is apparent, reset the fuel pump shut-off switch by
pushing in on the reset button.
4. Turn the ignition to the ON position. Pause for a few seconds and
return the key to the OFF position.
5. Make a further check for leaks in the fuel system.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
15
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
182

The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 15A Cluster, Lighting Control Module
(Interior Lighting)
2 10A Ignition (ON) - Electronic
Automatic Temperature Control
(EATC) module, A/C mode switch
(vehicles equipped with EATC)
3 10A EATC module
4 10A Ignition (ON) - Anti-lock Brake
System (ABS) module, Positive
Crankcase Ventilation (PCV)
5 10A Speed control deactivation switch,
Stop signal, Brake-Transmission
Shift Interlock (BTSI)
(column-shift transmission)
6 10A Ignition (ON) - Cluster
7 10A LCM (Park lamps, Switch
illumination)
27 25
26 2423 21
2219
20
18 16
17 1514 12
1310
33
31
2932
30
28 11
97
8653
41
2Relay
1
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
184

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
8 10A Ignition (ON) - Rear Air
Suspension Module (RASM),
Variable Assist Power Steering
(VAPS)
9 20A LCM (Headlamps, Cornering
lamps)
10 5A Ignition (ON/START) - Driver’s
Door Module (DDM)
11 10A Ignition (START) - ON/ACC relay
coil
12 10A Ignition (ON/START) - Starter
relay coil
13 10A Ignition (START) - Wiper module
14 10A Ignition (ON) - BTSI (Floor-shift
transmission)
15 7.5A Ignition (START) - LCM, Door
lock switch illumination, Heated
seat switch illumination,
Moonroof, Overhead console,
Electrochromatic mirror
16 15A Ignition (ON) - Turn signals
17 10A Ignition (START) - Audio
18 10A Ignition (ON) - A/C mode switch
(vehicles equipped with manual
A/C), Blend door, DDM, Heated
seat modules, Daytime Running
Lamps (DRL) module
19 10A Left-hand low beam, DRL
20 10A Ignition (ON/ACC) - Back-up
lamps
21 10A Right-hand low beam, DRL
22 10A Ignition (ON/ACC) - Restraint
Control Module (RCM), Occupant
Classification Sensor (OCS),
Passenger Air bag Deactivation
Indicator (PADI)
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
185

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
23 15A Multi-function switch
(Flash-to-pass)
24 10A Ignition (ON/ACC) - Passive
Anti-Theft System (PATS)
module, Powertrain Control
Module (PCM) relay coil, Fuel
relay coil, Ignition coil relay coil
25 10A Autolamp/Sunload sensor, Power
mirrors, Door lock switches
(DDM), Adjustable pedal switch
26 10A Ignition (ON/ACC) - Analog
cluster, Warning lamp module,
LCM, Overdrive cancel switch,
Rear defroster relay coil
27 20A Cigar lighter, OBD II, Power point
28 10A Center High-Mounted Stop Lamp
(CHMSL)
29 15A Audio
30 15A Stop lamps, MFS
31 15A Hazards
32 10A Mirror heaters, Rear defroster
switch indicator
33 — Not used
Relay 1 Full ISO relay Rear defroster
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.
To reduce risk of electrical shock, always replace the cover to
the Power Distribution Box before reconnecting the battery or
refilling fluid reservoirs.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
186

If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 20A* Ignition switch (Key in, RUN 1,
RUN 2)
2 25A* Ignition switch (RUN/START,
RUN/ACC, START)
3 10A* Powertrain Control Module (PCM)
keep alive power
4 20A* Fuel relay feed
5 10A* Rear Air Suspension Module
(RASM), VASM
6 15A* Alternator regulator
7 30A* PCM relay feed
8 20A* Driver’s Door Module (DDM),
Door locks
9 15A* Ignition coil relay feed
503
502
501
24
23
20
19 22
21302303304
301 207201 202203 204
209
206
208
205602118
114
110
106
102
117
113
109
105
101
116
112
108
104
115
111
107
103
18
16
14
1210
8
6
4
2
17
15
13
119
7
5
3
1 601
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
187

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
10 20A* Horn relay feed
11 15A* A/C clutch relay feed
12 25A* Audio
13 20A* Instrument panel power point
14 20A* Stop lamp switch
15 20A* Heated seats
16 20A* Daytime Running Lamps (DRL)
module
17 — Not used
18 — Not used
19 15A* Injectors
20 15A* PCM, Mass Air Flow (MAF)
sensor
21 15A* Powertrain loads and sensors
22 — Not used
23 — Not used
24 5A* Radio mute
101 40A** Blower relay feed
102 50A** Cooling fan
103 50A** Instrument panel (I/P) fuse box
feed #1 (I/P fuses 23, 25, 27 and
31)
104 40A** Instrument panel (I/P) fuse box
feed #2 (I/P fuses 1, 3, 5, 7 and 9)
105 30A** Starter relay feed
106 40A** Anti-lock Brake System (ABS)
module (Pump)
107 40A** Rear defroster relay feed
108 20A** Moonroof
109 20A** ABS module (Valves)
110 30A** Wiper module
111 — Not used
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
188

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
112 30A** Air suspension compressor
113 — Not used
114 — Not used
115 — Not used
116 — Not used
117 — Not used
118 — Not used
201
12ISO relay A/C clutch
202 — Not used
203
12ISO relay Ignition coil
204
12ISO relay PCM
205 — Not used
206
12ISO relay Fuel
207 — Not used
208 — Not used
209
12ISO relay Horn
301 Full ISO relay Starter
302 Full ISO relay Air compressor
303 Full ISO relay Blower
304 Full ISO relay Power windows relay (RUN/ACC)
501 Diode A/C clutch
502 Diode PCM
503 Diode Horn, Door latch
601 20A Circuit
breakerPower seats, Lumbar, Decklid
602 20A Circuit
breakerPower windows relay feed
(RUN/ACC)
* Mini fuse ** Cartridge fuse
Relays
Relays are located in the power distribution box and should be replaced
by qualified technicians.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
189