2004 Mercury Grand Marquis pcm fuse

The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 15A Audio, CD changer
2 5A Audio
3 7.5A Mirrors
4 10A Air bags
5—Not used
6 15A Instrument cluster warning lamps
module, Overdrive control switch,
Lighting Control Module (LCM),
A/C clutch, Analog cluster
7 10A Driver’s Door Module (DDM),
Premium radio
8 25A Powertrain Control Module (PCM)
power relay, Coil-on plugs, Radio
noise capacitor, Passive Anti-Theft
System (PATS)
9 5A Transmission range sensor
27 25
26 2423 21
2219
20
18 16
17 1514 12
131030
32
31
28
29
11
97
8653
41
2
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
148

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
10 10A Rear window defrost, Heated
mirrors
11 5A Traction control indicator relay
(ABS w/traction control only)
12 15A Multi-function switch for
turn/hazard lamps
13 5A Radio
14 10A Anti-lock Brake System (ABS),
Instrument Cluster
15 15A Speed control module, LCM,
EATC blower motor relay, Door
lock switch illumination, Heated
seat switch, Moonroof
16 15A Reversing lamps, Shift lock, DRL
module, VAP Steering, Electronic
day/night mirror, Overhead
console, Air suspension, Climate
control, Heated seat module,
Speed chime module (GCC only),
DDM, Back-up lamps
17 7.5A Wiper motor
18—Not used
19 15A Brake lamps, Brake signal for
PCM, ABS and speed control
module, DDM
20—Not used
21 15A LCM for park lamps and interior
illumination, Autolamp/Sunload
sensor
22 20A Speed control servo,
Multi-function switch for hazard
lamps, Brake on/off switch, Feed
for IP fuse 19
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
149

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
16—Not used
17—Not used
18—Not used
19 15A* Powertrain Control Module
(PCM), Fuel injectors
20 15A* PCM, HEGOs
21—Not used
22—Not used
23—Not used
24—Not used
101 30A** Ignition switch, Starter motor
solenoid via starter relay, IP fuses
7, 9, 12 and 14
102 50A** Cooling fan (engine)
103 40A** Blower motor
104 40A** Heated backlight relay
105 30A** PCM power relay, Diagnostic
connector, PDB fuses 19 and 20,
A/C clutch relay, Fuel pump
module relay
106 40A** Anti-lock Brake System (ABS)
107—Not used
108—Not used
109–Not used
110–Not used
111–Not used
112 50A** Ignition switch feed to IP fuses 4,
6, 8, 11, 13, 15, 17, 20, 22 and 28
113 50A** Feeds IP fuses 3, 5, 21, 23, 25, 27
114 30A** VAP Steering, Air suspension
compressor, Instrument cluster
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
152

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
115 50A** Ignition switch feed to IP fuses 16
and 18
116 30A** Wipers
117–Not used
118 20A** ABS
201 1/2 ISO Horn relay
202 1/2 ISO PCM relay
203 1/2 ISO Fuel pump relay
204 1/2 ISO A/C clutch relay
205 1/2 ISO Traction control switch relay
206—Not used
207—Not used
208 1/2 ISO Moonroof relay
209—Not used
301 Full ISO Blower motor relay
302 Full ISO Starter solenoid relay
303 Full ISO Air suspension relay
304 Full ISO Heated backlight relay
401—Not used
501 Diode PCM
502 Diode A/C clutch
503—Not used
601—Not used
602 20A** Adjustable pedals, Power seat,
Locks, Decklid, Lumbar
* Mini fuse ** Circuit breaker/Maxi fuse
Relays
Relays are located in the power distribution box and should be replaced
by qualified technicians.
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.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
153