2003 FORD F650 Owners Manual

The fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 20A Horn
2 15A Turn/Hazard lamps
3 20A Cigar lighter
4 10A Diagnostic connectors
5 15A Back-up lamps, Daytime Running
Lamps (DRL) relays, Blend door
actuator, Heated seat module
(SuperCrewzer only), On/Off fan
clutch (SuperCrewzer only),
Warning chime module
(SuperCrewzer and Ambulance)
6—Not used
7—Not used
8 5A Radio, GEM
9 5A Switch Illumination (headlamp,
power windows, power door
locks), Power window relay,
Trailer hook-up lamps
(SuperCrewzer only)
10—Not used
11 30A Wiper motor, Washer pump relay
12 10A Stoplamp switch (hydraulic brake
vehicles only)
13 20A Radio, Cluster, 7.3L Power Stroke
Powertrain Control Module
(PCM), Keep Alive Memory
14 10A Interior lamps, Running board
lamps (SuperCrewzer only)
Roadside Emergencies
153

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
15 10A GEM, Interior lamp relay, Map
lamps, Glove box lamps
(SuperCrewzer only), Power
mirrors (SuperCrewzer only),
Warning chime module
(SuperCrewzer only)
16 15A Highbeams
17—Not used
18 5A Headlamp switch, GEM
19 15A Engine, Cluster, Cummins PCM,
CAT PCM, 7.3L Power Stroke
PCM (idle valid switch input),
Alternator (Ambulance only)
20 15A Starter relay, GEM
21 10A DRL
22 15A Exhaust brake (SuperCrewzer
only), Heated mirrors
(SuperCrewzer only), Rear air
suspension (SuperCrewzer and
Ambulance)
23 10A Electronic flasher
24 15A Vacuum pump, Air dryer, ABS,
Fuel heater relay
25 10A Blower motor relay
26 10A Right-hand low beam headlamp
27—Not used
28 10A Left-hand low beam headlamp
Roadside Emergencies
154

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
29 10A Cluster, GEM, 7.3L Power Stroke
PCM (clutch switch input), APCM
(7.3L Power Stroke only),
Overhead console (SuperCrewzer
only), Keyless entry module
(SuperCrewzer only), Traxx
(Fuel) module (SuperCrewzer
only)
30 30A 7.3L Power Stroke PCM diode,
7.3L Power Stroke fuel heater
31 15A Allison MD Transmission, Neutral
start relay and PCM (7.3L Power
Stroke only)
Relay 1—Interior lamps
Relay 2—Not used
Relay 3—Horn
Relay 4—One touch down power window
Relay 5—Not used
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
Batterysection of theMaintenance and specificationschapter.
Roadside Emergencies
155

The high-current fuses and relays are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 15A* Park lamps, Roof lamps
2 25A* Cummins Powertrain Control
Module (PCM)
15A* Foglamps (SuperCrewzer only)
3 10A* Generator
4 15A* Washer pump
5 15A* CAT air intake heater relay,
Cummins PCM
6 20A* CAT PCM, Cummins PCM
7 15A* Stop lamps
8 25A* CAT fuel heater
9 30A* Trailer hook-up lamps
(SuperCrewzer only)
10 15A* Shift modulator (Allison AT
transmission only) (except for
F–650 SuperCrewzer and
Caterpillar/Cummins)
503
304
303
302301
502
501
207201
202
203
204122118114110106102
121117113109105101
120116112108104
119115111107103
24
209206
208
18161412108642
1715131197531
205
23
22
21
401
20
19
Roadside Emergencies
156

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
11 20A* Allison MD transmission, Allison
2000/2400 transmission
12 10A* Keyless entry module
(SuperCrewzer only)
13 10A* Park brake adjustment module
(SuperCrewzer only)
14—Not used
15 7.5A* Body builder prep (hydraulic
brake vehicles only)
16 10A* Allison 2000/2400 transmission
(except F650 SuperCrewzer)
17 5A* Radio (SuperCrewzer only)
18—Not used
19—Not used
20—Not used
21 10A* GEM (hydraulic brake vehicles
only)
22—Not used
23—Not used
24—Not used
101 40A** Anti-lock Brake System (ABS)
(air brake vehicles only)
102 20A** Body builder prep run feed
103 50A** Ignition switch (Junction box
fuses 8, 9, 11, 19, 20, 22, 23, 24,
25, 29, 30, 31)
104 20A** Power point
105 20A** Power door locks
106 30A** Headlamps
107 50A** Junction box battery feed (fuses
1, 2, 3, 4, 12, 13, 14, 15)
108 40A** Cummins fuel heater
Roadside Emergencies
157

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
109 40A** Power windows
110 30A** Power seats (SuperCrewzer only)
111 30A** Body builder prep
112 40A** Blower motor
113 30A** Heated seats (SuperCrewzer only)
114 30A** E-brake (SuperCrewzer only)
115 40A** Ignition switch (Junction box
fuses 5, 8, 9, 11, 21)
116 30A** Body builder prep
117 20A** 7.3L Power Stroke PCM
118 30A** IDM (7.3L Power Stroke only)
119/120 60A** Hydraulic ABS, Air brake trailer
tow fuse block
121/122 60A** Hydromax motor, Air brake trailer
tow fuse block
201—Washer pump relay
202—Wiper speed relay
203—Wiper run/park relay
204—7.3L Power Stroke neutral start
relay, Stoplamp relay (CAT and
Cummins only)
205—Right-hand stop/turn relay
206—Left-hand stop/turn relay
207—Shift modulator relay (CAT and
Power Stroke only), Cummins
VP-44 Relay, A/C high-pressure
relay (SuperCrewzer only)
208—Back-up lamps relay
209—Stop lamps relay, Foglamps relay
(SuperCrewzer only)
Roadside Emergencies
158

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
301—Fuel heater relay (CAT and
Cummins only)/7.3L Power Stroke
PCM relay)
302—Park lamps relay
303—Blower motor relay
304—Air ABS relay
401—Not used
501—Not used
502—Not used
503 Diode 7.3L Power Stroke PCM diode
* Mini Fuses ** Maxi Fuses
Relays
The relay box is located on the rear crossmember.
Air Brake Trailer Tow Relays (if equipped)
Roadside Emergencies
159

The relays are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingDescription
1 30A** Trailer Tow Run Feed
2 30A** Trailer Tow Park/Marker Lamps
3 30A** Trailer Tow Stop Lamps
4 30A** Trailer Tow Turn/Stop Lamps
5—Not Used
R1—Trailer Tow Run Relay
R2—Trailer Tow Stop Lamp relay
R3—Trailer Tow Park/Marker Lamp
Relay
R4—Trailer Tow Park/Marker Lamp
Relay
R5—Not Used
R6—Not Used
R7—Trailer Tow Left Turn/Stop Lamp
Relay
R8—Trailer Tow Right Turn/Stop Lamp
Relay
** Maxi Fuse
Roadside Emergencies
160