Mercury Grand Marquis Fourth Generation (2002 – 2011) – fuse box diagram

Mercury Grand Marquis Fourth Generation (2002 – 2011) – fuse box diagram

Year of production: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

Passenger compartment fuse panel

Mercury Grand Marquis 4th Generation - fuse box - passenger compartment
Mercury Grand Marquis 4th Generation – fuse box – passenger compartment

The fuse panel is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.

Fuse/relay Ampere rating [A] Description
1 15 Cluster, Lighting Control Module (Interior Lighting)
2 10 Ignition (ON) – Electronic Automatic Temperature Control (EATC) module, A/C mode switch (vehicles equipped with manual A/C only), A/C blower relay coil
3 10 EATC module
4 10 Ignition (ON) – Anti-lock Brake System (ABS) module, Rear Air Suspension Module (RASM), Variable Assist Power Steering (VAPS)
5 10 Speed control deactivation switch, Stop signal
6 10 Ignition (ON) – Cluster
7 15 LCM (Park lamps, Corner lamps)
8 10 LCM
9 10 LCM (Switch illumination)
10 5 Ignition (START) – Audio mute
11 10 Ignition (ON/ACC) – window relay coil
12 10 Ignition (START) – Starter relay coil, DTRS
13 10 Ignition (ON/ACC) – Wiper module
14 10 Ignition (ON) – BTSI (Floor-shift transmission)
15 7,5 Ignition (ON/ACC) – LCM, Door lock switch illumination, Heated seat switch illumination, Moonroof, Overhead console, Electrochromatic mirror
16 15 Ignition (ON) – Turn signals
17 10 Ignition (ON/ACC) – Audio
18 10 Ignition (ON) – A/C mode switch (vehicles equipped with manual A/C), Blend door, Heated seat modules
19 10 LCM (Left-hand low beam)
20 10 Ignition (ON/START) – Back-up lamps
21 10 LCM (Right-hand low beam)
22 10 Ignition (ON/START) – Restraint Control Module (RCM), Occupant Classification Sensor (OCS), Passenger Air bag Deactivation Indicator (PADI)
23 15 Multi-function switch (Flash-to-pass), LCM (High beams)
24 10 Ignition (ON/START) – Passive Anti-Theft System (PATS) module, Powertrain Control Module (PCM) relay coil, Fuel relay coil, Ignition coil relay coil
25 10 Autolamp/Sunload sensor, Power mirrors, Door lock switches, Mirror switch, Keypad switch, Decklid switch, Adjustable pedal switch, DDM
26 10 Ignition (ON/START) – Cluster, LCM, Overdrive cancel switch, Rear defroster relay coil
27 20 Cigar lighter, OBD II
28 7,5 Center High-Mounted Stop Lamp (CHMSL)
29 15 Audio
30 15 Stop lamps, MFS
31 15 Hazards
32 10 Mirror heaters, Rear defroster switch indicator
33 Not used
Relay 1 Full ISO relay Rear defroster

 

Power distribution box

Mercury Grand Marquis 4th Generation - fuse box - power distribution box
Mercury Grand Marquis 4th Generation – fuse box – power distribution box

The power distribution box is located in the engine compartment.

Fuse/relay Ampere rating [A] Description
1 25* Ignition switch (Key in, RUN 1, RUN 2), Hazards
2 25* Ignition switch (RUN/START, RUN/ACC, START)
3 10* Powertrain Control Module (PCM) keep alive power
4 20* Fuel relay feed
5 10* Rear Air Suspension Module (RASM), VAPS
6 15* Alternator regulator
7 30* PCM relay feed
8 20* Driver’s Door Module (DDM)
9 15* Ignition coil relay feed
10 20* Horn relay feed
11 15* A/C clutch relay feed
12 25* Audio
13 20* Instrument panel power point
14 20* Stop lamp switch
15 20* Heated seats
16 15* Foglamps
17 Not used
18 Not used
19 15* Injectors
20 15* PCM, Mass Air Flow (MAF) sensor, IAT
21 15* Powertrain loads and sensors, A/C clutch relay coil
22 Not used
23 Not used
24 Not used
101 40** Blower relay feed
102 50** Cooling fan
103 50** Instrument panel (I/P) fuse box feed #1 (I/P fuses 19, 21, 23, 25 and 27)
104 40** Instrument panel (I/P) fuse box feed #2 (I/P fuses 1, 3, 5, 7, 8 and 9)
105 30** Starter relay feed
106 40** Anti-lock Brake System (ABS) module (Pump)
107 40** Rear defroster relay feed
108 20** Moonroof
109 20** ABS module (Valves)
110 30** Wiper module
111 Not used
112 30** Air suspension compressor
113 Not used
114 Not used
115 Not used
116 Not used
117 Not used
118 Not used
201 1⁄2 ISO relay A/C clutch
202 Not used
203 1⁄2 ISO relay Ignition coil
204 1⁄2 ISO relay PCM
205 1⁄2 ISO relay Fog lamps
206 1⁄2 ISO relay Fuel
207 Not used
208 Not used
209 1⁄2 ISO 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 breaker Power seats, Lumbar
602 20A Circuit breaker Power windows relay feed (RUN/ACC)
* Mini fuse ** Cartridge fuse

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.