Ford F-53 Motorhome Chassis - 2003 Fuse Box Diagram

Ford F-53 Motorhome Chassis - 2003 Fuse Box Diagram

Push the service brake pedal with
your foot and pull the parking brake
release handle to release the
parking brake.
AUTOMATIC TRANSMISSION OPERATION
Brake-shift interlock
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 the 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:
1. Apply the parking brake, turn ignition key to LOCK, then remove the
key.
2. Insert the key and turn it to OFF.
Apply the brake pedal and shift
to N (Neutral)
.
In the ignition OFF 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 to
Fuses and relays
in the
Roadside
emergencies
chapter.
Driving
27
FUSES AND RELAYS
Standard fuse amperage rating and color
COLOR
Fuse
rating
Mini
fuses
Standard
fuses
Maxi
fuses
Cartridge
maxi
fuses
Fuse link
cartridge
2A
Grey
Grey
3A
Violet
Violet
4A
Pink
Pink
5A
Tan
Tan
7.5A
Brown
Brown
10A
Red
Red
15A
Blue
Blue
20A
Yellow
Yellow
Yellow
Blue
Blue
25A
Natural
Natural
30A
Green
Green
Green
Pink
Pink
40A
Orange
Green
Green
50A
Red
Red
Red
60A
Blue
Yellow
70A
Tan
Brown
80A
Natural
Black
Passenger compartment fuse panel
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.
To remove a fuse use the fuse puller tool provided on the fuse panel
cover.
Roadside emergencies
38
The fuses are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse
Panel Description
1
20A
Turn signal relay coil, Turn
indicators, Body builder rear
turn/stop feeds
2
Not used
3
Not used
4
15A
Courtesy lamp relay, Interior lamp
feed
5
10A
Body builder accessory feed
(accessory and run)
6
10A
Trailer tow left stop/turn feed
7
15A
Blower motor relay coil
8
Not used
1
2
3
4
5
7
6
8
9
10
11
42
43
44
13
12
14
15
16
17
19
18
20
21
22
23
25
24
26
27
28
29
31
30
32
33
34
35
37
36
38
39
40
41
RELAY 1
RELAY 2
RELAY 3
Roadside emergencies
39
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse
Panel Description
9
20A
Stoplamps: Trailer tow Electric
Brake controller feed, Body
builder rear turn/stop feeds, Body
builder stop lamp feed, Trailer
turn/stop fuse feeds
10
5A
Instrument cluster memory,
Power brake assist lamp*
11
30A
Wiper/Washer module, Wiper feed
12
10A
Trailer tow stop/turn feed
13
10A
ABS module
14
10A
Warning chime module, Power
brake assist module*, Instrument
cluster power, Instrument cluster
warning lamps, Transmission
control switch
15
15A
Left turn signal feed
16
20A
Body builder battery (+12V) feed
17
5A
Body builder radio feed
18
Not used
19
5A
DRL relays
20
Not used
21
15A
Right turn signal feed
22
Not used
23
Not used
24
Not used
25
10A
Right-hand low beam headlamp
feed
26
10A
Speed control module, Brake shift
interlock actuator
27
Not used
28
Not used
29
Not used
Roadside emergencies
40
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse
Panel Description
30
Not used
31
10A
Left-hand low beam headlamp
feed
32
10A
Backup lamp feed
33
Not used
34
Not used
35
20A
Body builder high beam feed,
High beam indicator
36
Not used
37
Not used
38
10A
Body builder accessory feed (run
only)
39
Not used
40
Not used
41
10A
Instrument illumination
42
Not used
43
Not used
44
Not used
Relay 1
Left turn signal relay
Relay 2
——
Courtesy lamps relay
Relay 3
Right turn signal relay
*Vehicles with Hydromax brake assist only
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
41
The high-current fuses are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box
Description
1
5A*
Power brake assist module***
2
10A*
A/C system
3
20A*
Transmission, Vapor Management
Valve (VMV) solenoid, Heated
exhaust gas oxygen (HEGO)
sensors
4
5A*
Powertrain Control Module (PCM)
memory
5
15A*
PCM power, Fuel pump relay coil,
Fuel injectors, Mass Air Flow
(MAF) sensor with IAT, A/C
system relay coil
19
29
18
28
17
27
16
26
15
25
14
24
13
11
12
9
10
7
8
5
6
3
4
1
2
23
22
21
20
6
5
4
3
2
1
DIODE2
DIODE1
Roadside emergencies
42
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box
Description
6
20A*
Parklamp feeds, Instrument panel
fuse #41, Warning chime module,
Trailer tow running lamp relay
coil, I/P dimmer module
7
15A*
Starter relay coil, BB neutral
sense
8
10A*
Stoplamp switch (logic): Brake
pressure switch, Power brake
assist module***, Speed control
module, PCM, Anti-lock Brake
System (ABS) module, Brake shift
interlock actuator
9
5A*
Alternator
10
20A*
Daytime Running Lamps (DRL)
11
30A*
Ignition coils, Radio capacitors #1
and #2, PCM relay
12
20A*
Trailer tow running lamps feed,
Trailer tow back-up lamps feed, IP
- backup lamp feed
13
30A**
Trailer tow electric brake
controller feed
14
60A**
IP battery feed (fuse #9, 15, 21)
15
--
Not used
16
60A**
ABS module
17
--
Not used
18
20A**
Horn feed
19
--
Not used
20
40A**
PCM relay
21
20A**
Fuel pump motor
22
20A**
Diagnostic tool connector, Cigar
lighter feed
23
40A**
Blower motor feed
Roadside emergencies
43
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box
Description
24
40A**
IP battery feed (fuses #4, 10, 16)
25
50A**
Ignition switch feed (IP fuses #1,
5, 7, 11, 13, 14, 17, 19, PDB fuses
#7, 9, 11)
26
60A**
Ignition switch feed (IP fuses #5,
11, 17, 26, 32, 38)
27
30A**
Multifunction switch (headlamps)
28
Not used
29
60A**
Power brake assist motor***
Relay 1
DRL on/off relay
Relay 2
Fuel pump relay
Relay 3
Horn relay
Relay 4
A/C system relay
Relay 5
Blower motor relay
Relay 6
PCM relay
Diode 1
PCM diode
Diode 2
Park brake diode
* Mini Fuses ** Maxi Fuses ***
Vehicles with Hydromax brake assist only
Relay module
The relay box is located by the power distribution box in front of the
radiator in the engine compartment.
The relays are coded as follows:
Relay location
Description
1
Back up Lamp
2
Running Lamp
3
Not Used
4
Headlamp DRL
1
2
4
3
Roadside emergencies
44