2017 FORD F750 fuses

Protected components
Fuse amp rating
Fuse or relay number
Not used.
—
87
Not used.
—
88
Starter motor
40A*
89
Trailer battery feed (air brakes).
30A*
90
Trailer tow battery charge (hydraulic
brakes).
Cargo box lamp.
Relay
91
Not used.
—
92
Not used.
—
93
Upfitter relay #1.
25A*
94
Upfitter relay #2.
25A*
95
Anti-lock brake system pump (hydraulic
brakes).
60A*
96
Not used.
—
97
Not used.
—
98
Instrument panel 110v power inverter.
40A*
99
Trailer tow turn lamp relays.
30A*
100
Starter.
Relay
101
Trailer tow battery charge relay (U-Haul).
Relay
102
Trailer tow battery feed (air brakes).
Trailer tow right hand side turn and stop
lamps.
Relay
103
Trailer tow left hand side turn and stop
lamps.
Relay
104
Not used.
—
105
Trailer tow backup lamps relay.
Relay
106
Passenger air ride seat compressor relay.
Relay
107
*J case fuses.
**Mini fuses.
165
F-650/750 (TBC) , enUSA, First Printing Fuses

Passenger Compartment Fuse
Panel
The fuse panel is in the passenger footwell.
Remove the panel cover to access the
fuses.
Pull the fuse panel cover toward you to
remove it. When the clips of the panel
disengage, let the panel fall easily.
Use the provided fuse puller tool to remove
a fuse. It is on the fuse panel cover. Protected components
Fuse amp rating
Fuse or relay number
Left front window motor.
30A
1
Upfitter relay #4.
15A
2
Right front window motor.
30A
3
Interior lamps.
10A
4
Not used.
—
5
Not used.
—
6
Power mirror switch.
7.5A
7
166
F-650/750 (TBC) , enUSA, First Printing FusesE163102

Protected components
Fuse amp rating
Fuse or relay number
Not used.
—
8
Upfitter relay #3.
10A
9
Not used.
—
10
Ford telematics battery feed.
10A
11
Interior lighting.
15A
12
Right turn and brake lamps.
15A
13
Left turn and brake lamps.
15A
14
Center high-mounted stop lamp.
15A
15
Backup lamps.
Right headlamp low beam.
10A
16
Left headlamp low beam.
10A
17
Powertrain control module wakeup.
10A
18
Brake shift interlock.
Not used.
—
19
Power door locks.
20A
20
Brake on/off switch.
10A
21
Horn.
20A
22
Instrument cluster.
15A
23
Diagnostic connector.
15A
24
Power fold mirror relay.
Steering wheel control module.
Remote keyless entry.
Not used.
—
25
Steering wheel control module.
5A
26
Not used.
—
27
Ignition switch.
15A
28
Radio.
20A
29
SYNC.
Parking lamps.
15A
30
Trailer tow parking lamps relay coil.
167
F-650/750 (TBC) , enUSA, First Printing Fuses

Protected components
Fuse amp rating
Fuse or relay number
Customer access trailer brake on/off
switch.
5A
31
Delayed accessory power.
15A
32
Driver and passenger door lock switch
illumination.
110v power inverter module.
Telescoping mirror switch.
Not used.
—
33
Ancillary translator module run/start.
10A
34
Tow/Haul run/start.
5A
35
Fuel tank select switch.
10A
36
Auxiliary heater.
10A
37
Delayed accessory power.
10A
38
AM/FM base radio.
Left and right headlamp high beam.
15A
39
Rear parking lamps.
10A
40
Clearance lamps.
Not used.
—
41
Ford telematics run/start.
5A
42
Power Distribution Box run/accessory
fuses.
10A
43
Wiper relay coil.
Customer access upfitter switch power.
10A
44
Ancillary translator module run/accessory
sense.
Not used.
—
45
Climate control module.
10A
46
Fender direction indicator lamps.
15A
47
Power windows switch (crew cab).
30A Circuit breaker
48
Delayed accessory power.
Relay
49
168
F-650/750 (TBC) , enUSA, First Printing Fuses

CHANGING A FUSE
Fuses
WARNING
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. 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.
FuseTypes Fuse Type
Callout
Micro 2
A
Micro 3
B
Maxi
C
Mini
D
169
F-650/750 (TBC) , enUSA, First Printing FusesE217331 E207206

Fuse Type
Callout
M Case
E
J Case
F
J Case Low Profile
G
170
F-650/750 (TBC) , enUSA, First Printing Fuses

Engine compartment (with engine off)
Inspect for glazing, fraying or cracking. There should be no
more than 5-7 cracks per rib, per 1 in (2.5 cm)
Belts (fan, alternator,
water pump and air
conditioning
compressor)
Inspect for signs of fluid puddles or dripping fluid on the
ground under the engine, or the underside of the engine.
Fluid leaks
Inspect for debris that may have collected on the HVAC air
inlet grille or inside the exterior module as this may reduce
system performance.
HVAC air inlet Engine starting (with parking brake applied)
Before entering the cab, verify that the vehicle is equipped
with spare electrical fuses (if used), three red reflective
triangles, a properly charged and rated fire extinguisher and
wheel chocks.
Safety and emergency
equipment
Walk around the vehicle and verify all steps and grab handles,
inside and out (as well as behind), are tight and clean. Use
extreme caution and a three-point stance at all times.
Inspect door latches for proper closing, latching and locking.
Set the parking brake. Make sure the gearshift lever is in
neutral (N) or park (P) (if equipped with a park position).
Starting the engine
Diesel engine:
Turn the key to the on position. Turn the key
to start when the wait to start indicator light in the instrument
cluster turns off.
Gasoline engine:
Turn the key to start, and then release it
as soon as the engine starts.
Verify pressure builds to normal operating range.
Engine oil pressure
A tone indicating low air pressure should sound immediately
after the engine starts but before the compressor has built-
up pressure. The tone should stop when the air pressure
reaches
70 psi (483 kPa). Let the air pressure build to
governed cutout pressure, which should occur between
115– 130 psi (793–896 kPa)
.
Low air pressure warning
tone (if equipped with an
air compressor)
Press the accelerator and verify that it operates smoothly,
without any binding or irregular feel. Release the pedal and
verify the engine returns to idle speed immediately.
Accelerator
172
F-650/750 (TBC) , enUSA, First Printing Vehicle Inspection Guide

UNDER HOOD OVERVIEW - 6.8L
Windshield washer fluid reservoir. See Washer Fluid Check (page 201).
A
Engine coolant reservoir. See
Engine Coolant Check (page 189).
B
Automatic transmission fluid dipstick. See
Automatic Transmission Fluid
Check (page 198).
C
Brake fluid reservoir. See
Brake Fluid Check (page 200).
D
Engine compartment fusebox. See
Fuses (page 161).
E
Power steering fluid reservoir. See
Power Steering Fluid Check (page 201).
F
Engine oil dipstick. See
Engine Oil Dipstick (page 185).
G
Engine oil filler cap. See
Engine Oil Check (page 185).
H
Air cleaner assembly. See
Changing the Engine Air Filter (page 209).
I
183
F-650/750 (TBC) , enUSA, First Printing MaintenanceABC
FGHI
DE
E209130