Ford F-150 Heritage (2004 year). Manual — part 36

Fuse/Relay

Location

Fuse Amp

Rating

Passenger Compartment Fuse

Panel Description

8

5A

Radio, GEM

9

—

Not used

10

—

Not used

11

30A

Front washer pump relay, Wiper
run/park relay, Wiper HI/LO relay,
Windshield wiper motor

12

—

Not used

13

20A

Stop lamp switch (Lamps),
Turn/Hazard flasher

14

15A

Battery saver relay, Interior lamp
relay

15

5A

Stop lamp switch (speed control,
brake shift interlock), GEM

16

20A

Headlamps (hi beams), Cluster
(hi beam indicator)

17

—

Not used

18

5A

Instrument illumination (dimmer
switch power)

19

—

Not used

20

5A

Audio, GEM, PCM, Transmission
range sensor

21

15A

DTR sensor, Clutch switch,
Starter relay, I/P fuse 20

22

10A

Air bag module, Passenger air bag
deactivation module

23

10A

Trailer tow battery Charge relay,
Turn/Hazard flasher, 4x4
solenoids, 4x4 relays, Overhead
console, 4–Wheel Anti-lock Brake
System (4WABS) module

24

10A

Function selector switch assembly

25

—

Not used

Roadside Emergencies

146

Fuse/Relay

Location

Fuse Amp

Rating

Passenger Compartment Fuse

Panel Description

26

10A

Right-hand low beam headlamp

27

5A

Foglamp relay and foglamp
indicator, Main light switch
(upstream)

28

10A

Left-hand low beam headlamp

29

5A

Autolamp module, Transmission
overdrive control switch, Central
security module, Beltminder

30

30A

Passive Anti-theft transceiver,
Cluster, Ignition coils, PCM relay,
Coil on plugs, Radio noise
capacitor, ECC diode

31

—

Not used

Relay 1

—

Interior lamp relay

Relay 2

—

Battery saver relay

Relay 3

—

Not used

Relay 4

—

One-touch down window relay

Relay 5

—

Accessory delay relay

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.

Always replace the cover to the power distribution box before
reconnecting the battery or refilling fluid reservoirs

If the battery has been disconnected and reconnected, refer to the
Battery section of the Maintenance and Specifications chapter.

Roadside Emergencies

147

The high-current fuses are coded as follows.

Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

1

20A *

Power point

2

30A*

Powertrain Control Module (PCM)

3

30A*

Main light switch, Headlamp relay,
Multifunction switch

4

—

Not used

5

20A*

Trailer tow back-up/park lamps

6

15A*

Main light switch, Park lamp relay

7

20A*

Horn

8

15A*

Power door locks, Central
Security Module (CSM), Lock
relays

9

15A*

Daytime Running Lamps (DRL),
Fog lamps

10

20A*

Fuel pump

11

20A*

Alternator field

12

—

Not used

Roadside Emergencies

148

Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

13

15A*

A/C clutch

14

—

Not used

15

—

Not used

16

15A*

Bi-fuel injector module, fuel
selector switch and alternative
fuel injectors (Bi-fuel vehicles
only)

17

2A*

Speed control

18

15A*

PCM, Fuel injectors, Fuel pump
relay, Mass air flow sensor

19

10A*

Trailer/Camper adapter (right
stop/turn lamp)

20

10A*

Trailer/Camper adapter (left
stop/turn lamp)

21

—

Not used

22

—

Not used

23

15A*

HEGO sensor, Automatic
transmission

24

—

Not used

101

30A**

Trailer tow battery charge

102

50/20A**

Four-wheel Anti-lock Brake
System (4WABS)
module/Rear-wheel Anti-lock
Brake System (RABS) module,
Ignition switch

103

50A**

Central junction box

104

30A**

4x4 shift motor & clutch

105

40A**

Climate control front blower

106

20A**

Intercooler pump (supercharged
engine only)

107

—

Not used

108

30A**

Trailer tow electric brake

Roadside Emergencies

149