relay FORD F650/750 2019 Owners Manual

TOWING A TRAILER
WARNING: Do not exceed
the GVWR or the GAWR
specified on the certification
label. WARNING:
Towing trailers
beyond the maximum
recommended gross trailer
weight exceeds the limit of the
vehicle and could result in engine
damage, transmission damage,
structural damage, loss of
vehicle control, vehicle rollover
and personal injury.
Your vehicle may have electrical
items, such as fuses or relays,
related to towing. See
Fuses
(page 167).
Your vehicle's load capacity
designation is by weight, not by
volume, so you cannot necessarily
use all available space when
loading a vehicle.
Towing a trailer places an extra
load on your vehicle's engine,
transmission, axle, brakes, tires
and suspension. Inspect these
components periodically during,
and after, any towing operation. Load Placement
To help minimize how trailer
movement affects your vehicle
when driving:
•
Load the heaviest items closest
to the trailer floor.
• Load the heaviest items
centered between the left and
right side trailer tires.
• Load the heaviest items above
the trailer axles or just slightly
forward toward the trailer
tongue. Do not allow the final
trailer tongue weight to go
above or below 10-15% of the
loaded trailer weight.
When driving with a trailer or
payload, a slight takeoff vibration
or shudder may be present due to
the increased payload weight.
Additional information regarding
proper trailer loading and setting
your vehicle up for towing is
located in another chapter of this
manual. See
Load Limit (page
141).
You can also find information in
the
RV & Trailer Towing Guide
available at your authorized
dealer, or online. RV & Trailer Towing Guide Online
http://www.fleet.ford.com/towing-guides/
Website
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F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Towing

FUSE SPECIFICATION CHART
Power Distribution Box
WARNING: Always disconnect the
battery before servicing high current
fuses. WARNING: To reduce risk of
electrical shock, always replace the
cover to the power distribution box
before reconnecting the battery or
refilling fluid reservoirs. The power distribution box is in the engine
compartment. It has high-current fuses
that protect your vehicle's main electrical
systems from overloads.
If you disconnect and reconnect the
battery, you will need to reset some
features. See Changing the 12V Battery
(page
208). Protected Component
Fuse Rating
Fuse or Relay
Number
Blower motor.
Relay
1
Trailer tow and body builder stop lamps.
Relay
2
Urea heaters (diesel engine).
Relay
3
Driver air ride seat compressor.
Relay
4
Heated mirrors.
Relay
5
Not used.
—
6
Not used.
—
7
Passenger air ride seat compressor.
20A 1
8
167
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing FusesE163101

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
9
Not used.
—
10
Not used.
—
11
Not used.
—
12
Terminating resistor (120 ohm).
Resistor
13
Not used.
—
14
Not used.
—
15
Not used.
—
16
Not used.
—
17
Not used.
—
18
Brake on/off isolation relay.
10A 2
19
Not used.
—
20
Not used.
—
21
Trailer tow electric brake controller.
30A 1
22
Blower motor.
40A 1
23
Not used.
—
24
Wipers.
30A 1
25
Trailer tow park lamps.
30A 1
26
Urea heaters (diesel engine).
25A 1
27
Trailer tow park lamps.
Relay
29
A/C clutch.
Relay
30
Wipers.
Relay
31
Not used.
—
32
Vehicle power 1.
20A 2
33
168
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Vehicle power 2.
20A 2
34
Vehicle power 3.
10A 2
35
Vehicle power 4.
20A 2
36
Vehicle power 5 (diesel engine).
10A 2
37
Powertrain control module.
Relay
38
Not used.
—
39
Heated mirrors.
15A 2
40
Not used.
—
41
Trailer tow and body builder stop lamps.
20A 2
42
Not used.
—
43
Ancillary translator module.
20A 2
44
Run/start relay coil.
10A 2
45
Transmission control module keep-alive
power (diesel engine).
10A 2
46
A/C clutch.
10A 2
47
Run/start.
Relay
48
Air dryer.
20A 2
49
Blower motor relay coil.
10A 2
50
Not used.
—
51
Powertrain control module run/start
(diesel engine).
10A 2
52
Transmission control module run/start
(diesel engine).
Not used.
—
53
Anti-lock brake system run/start.
10A 2
54
169
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Seat compressor relay coil.
10A 2
55
Chassis solenoids relay coil.
Heated mirror relay coil.
Passenger compartment fuse panel run/
start feed.
20A 2
56
Fuel pump.
Relay
57
Wiper relay.
5A 2
58
Chassis solenoid relay.
5A 2
59
Air ride seat compressor relay.
Not used.
—
60
Not used.
—
61
Not used.
—
62
Chassis solenoids.
10A 2
63
Not used.
—
64
Cargo box lamp.
10A 2
65
Fuel pump.
30A 2
66
Not used.
—
67
Fuel pump relay coil.
10A 2
68
Not used.
—
69
Trailer tow or body builder backup lamps.
10A 2
70
Not used.
—
71
Powertrain control module relay coil.
10A 2
72
Keep-alive power.
Hydromax monitor.
5A 2
73
Chassis solenoids.
Relay
74
Not used.
—
75
170
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
76
Brake switch isolation (hydraulic brakes).
Relay
77
Not used.
—
78
Not used.
—
79
Not used.
—
80
Not used.
—
81
Auxiliary power point #2.
20A 1
82
Auxiliary power point #1.
20A 1
83
Driver air ride seat compressor.
20A 1
84
Hydromax pump.
60A 1
85
Anti-lock brake system modulator valves.
30A 1
86
Not used.
—
87
Not used.
—
88
Starter motor
40A 1
89
Trailer battery feed (air brakes).
30A 1
90
Trailer tow battery charge (hydraulic
brakes).
Cargo box lamp.
Relay
91
Not used.
—
92
Not used.
—
93
Upfitter relay #1.
25A 1
94
Upfitter relay #2.
25A 1
95
Anti-lock brake system pump (hydraulic
brakes).
60A 1
96
Not used.
—
97
171
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
98
Instrument panel 110 volt power inverter.
40A 1
99
Trailer tow turn lamp relays.
30A 1
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
106
Passenger air ride seat compressor.
Relay
107
1 J-case fuse.
2 Mini fuse.
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.
172
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse 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 (spare).
20A
5
Not used (spare).
5A
6
Power mirror switch.
7.5A
7
Not used (spare).
10A
8
Upfitter relay #3.
10A
9
Not used (spare).
10A
10
Ford telematics battery feed.
10A
11
173
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing FusesE163102

Protected Component
Fuse Rating
Fuse or Relay Number
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 (spare).
20A
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.
Fleet Telematics Modem and Ford Pass
Connect.
Not used (spare).
15A
25
Steering wheel control module.
5A
26
Not used (spare).
20A
27
Ignition switch.
15A
28
Radio.
20A
29
SYNC.
Parking lamps.
15A
30
Trailer tow parking lamps relay coil.
Customer access trailer brake on/off
switch.
5A
31
Delayed accessory power.
15A
32
174
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay Number
Driver and passenger door lock switch
illumination.
110 volt power inverter module.
Telescoping mirror switch.
Not used (spare).
10A
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 (spare).
7.5A
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 (spare).
5A
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
175
F650750 (TBC) , enUSA, Edition date: 201804, Second-Printing Fuses