relay FORD F750 2000 10.G Owners Manual

HAZARD FLASHER
Use only in an emergency to warn traffic of vehicle breakdown,
approaching danger, etc. The hazard flashers can be operated when the
ignition is off.
•The hazard lights control is
located on top of the steering
column.
•Depress hazard lights control to
activate all hazard flashers
simultaneously.
•Depress control again to turn the
flashers off.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
Always replace a fuse with one that has the specified amperage
rating. Using a fuse with a higher amperage rating can cause
severe wire damage and could start a fire.
15
Roadside emergencies
115

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, DRL Relays, Blend Door
Actuator
6—Not Used
7—Not Used
8 5A Radio, GEM
9 5A Switch Illumination (Headlamp, Power
Windows, Power Door Locks), Power
Window Relay
10—Not Used
11 30A Wiper Motor, Washer Pump Relay
12 10A Stoplamp Switch (Hydraulic Vehicles Only)
Relay #1
Relay #2
Relay #3
Horn
Relay #4
Relay #5 One Touch
Down Interior
Lamps#1
#12#22
#2
#3
#4
#5
#6
#7
#8
#9
#10
#11#13
#23
#14
#15
#16
#17#24
#25
#26
#27
#18
#28
#19
#29
#20
#21#30
#31
Roadside emergencies
117

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment
Fuse Panel Description
13 20A Radio, Cluster, 7.3L Power Stroke
Powertrain Control Module (PCM), Keep
Alive Memory
14 10A Interior Lamps
15 10A GEM, Interior Lamp Relay
16 15A Highbeams
17—Not Used
18 5A Headlamp switch, GEM
19 15A Engine, Cluster, Cummins PC M, CAT PCM,
7.3L Power Stroke PCM (Idle Valid Switch
Input)
20 15A Starter Relay, GEM
21 10A Daytime Running Lamps (DRL)
22 15A Not Used (Spare)
23 10A Electronic Flasher
24 15A Vacuum Pump, Air Dryer, ABS, Fuel Heater
Relay
25 10A Blower Motor Relay
26 10A Right Low Beam Headlamp
27—Not Used
28 10A Left Low Beam Headlamp
29 10A Cluster, GEM, 7.3L Power Stroke PCM
(clutch switch input), APCM (7.3L Power
Stroke 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
Relay 5—Not Used
Roadside emergencies
118

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 carechapter.
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)
3 10A* Generator
4 15A* Washer Pump
5 15A*
Air Intake Heater Relay (CAT), Cummins PCM
6 20A* CAT PCM, Cummins PCM
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
119

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
7 15A* Stop Lamps
8 25A* C AT Fuel Heater
9—Not Used
10 15A* Shift Modulator (Allison AT trans only)
11 20A* Allison MD Trans
12—Not Used
13—Not Used
14—Not Used
15 7.5A*
Body Builder Prep (Hydraulic Vehicles Only)
16—Not Used
17—Not Used
18—Not Used
19—Not Used
20—Not Used
21 10A* GEM (Hydraulic Vehicles Only)
22—Not Used
23—Not Used
24—Not Used
101 40A** ABS (Air Only)
102 20A** Body Builder Prep Run Feed
103 50A** Ignition Switch (JB 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
109 40A** Power Windows
110—Not Used
111 30A** Body Builder Prep
Roadside emergencies
120

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
112 40A** Blower Motor
113—Not Used
114—Not Used
115 40A** Ignition Switch (JB 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
12060A** Hydraulic ABS
121
12260A** Hydromax Motor
201—Washer Pump Relay
202—Wiper Speed Relay
203—Wiper Run/Park Relay
204—Cummins VP44 Relay/7.3L Power Stroke
Neutral Start Relay
205—Right Hand Stop/Turn Relay
206—Left Hand Stop/Turn Relay
207—Shift Modulator Relay
208—Backup Lamps Relay
209—Stop Lamps Relay
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
Roadside emergencies
121

JUMP STARTING YOUR VEHICLE
The gases around the battery can explode if exposed to flames,
sparks, or lit cigarettes. An explosion could result in injury or
vehicle damage.
Do not push start your vehicle. You could damage the catalytic
converter.
Batteries contain sulfuric acid which burns skin, eyes, and
clothing.
Preparing your vehicle
Also see the label on the battery.
1. Use only a 12–volt supply to start your vehicle. If you connect your
battery to a 24–volt power supply you can damage your starter, ignition
system and other electrical components. Do not attach the jumper cables
to the glow plug relay as this could severely damage the glow plugs,
injector driver module and PCM.
2. Do not disconnect the battery of the disabled vehicle as this could
damage the vehicle’s electrical system.
3. Park the booster vehicle close to the disabled vehicle making sure
theydo nottouch. Set the parking brake on both vehicles and stay clear
of the engine cooling fan and other moving parts.
4. Check all battery terminals and remove any excessive corrosion before
you attach the battery cables.
5. Turn the heater fan on in both vehicles to protect any electrical
surges. Turn all other accessories off.
Roadside emergencies
122

Relays ........................................115
Safety belts
(see Safety restraints) .....61,62,63
Safety defects, reporting ..........204
Safety restraints ................61,62,63
belt minder ...............................67
cleaning the safety belts ...70,167
extension assembly ..................66
for adults ..............................62,63
for children ...............................71
lap belt ......................................65
warning light
and chime ........................14,15,66
Safety seats for children .......72,73
Seat belts
(see Safety restraints) ...............61
Seats ............................................58
child safety seats .................72,73
Servicing your vehicle ..............179
Speed control ..............................51
Speedometer ...............................17
Starting your vehicle ..................77
jump starting ..........................125
preparing to start your
vehicle .......................................77
Tachometer .................................18
Tires
checking the pressure ............151Towing
wrecker ....................................125
Transmission
fluid, checking and adding
(automatic) .............................137
fluid, checking and adding
(manual) .................................137
manual operation ......................97
Trip odometer .............................18
Turn signal .............................12,49
Vehicle Identification
Number (VIN) ...........................173
Vehicle loading ..........................111
Warning chimes ......................10,15
Warning lights (see Lights) .......10
Washer fluid ..............................133
reservoir ..................................133
Water, Driving through .............112
Wheels .......................................147
Windows
power .........................................55
Windshield washer
fluid and wipers
checking and cleaning ............146
operation ...................................50
replacing wiper blades ...........146
Wrecker towing .........................125
Index
207