2019 FORD E-350 relay

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 your
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, for example fuses or relays,
related to towing. See
Fuses
(page 131).
Your vehicle's load capacity
designation is by weight, not by
volume, so you cannot necessarily
use all available space when
loading your 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.
• Select a draw bar with the
correct rise or drop. When both
the loaded vehicle and trailer
are connected, the trailer frame
should be level, or slightly
angled down toward your
vehicle, when viewed from the
side.
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
correct trailer loading and setting
your vehicle up for towing is
located in another chapter of this
Owner's Manual. See
Load Limit
(page 99). You can also find the
information in the RV & Trailer
Towing Guide. See an authorized
dealer.
104
E-Series (TE4) Canada/United States of America, 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. Note:
If your vehicle is equipped with dual
batteries, disconnecting the primary
under-hood battery does not remove power
from all circuits.
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 the battery has been disconnected and
reconnected, you need to reset some
features. See Changing the 12V Battery
(page
153). Protected Component
Fuse Rating
Fuse or Relay
Number
Powertrain control module relay.
—
1
Starter solenoid relay.
—
2
Wiper relay.
—
3
Trailer tow battery charge relay.
—
4
Fuel pump relay.
—
5
131
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing FusesE194305

Protected Component
Fuse Rating
Fuse or Relay
Number
Trailer tow park lamp relay.
—
6
Auxiliary switch #4 relay.
—
7
Auxiliary switch #3 relay.
—
8
Modified vehicle and stripped chassis run/
start relay.
—
9
Cooling fan relay (6.2L engine).
—
10
Cooling fan (6.2L engine).
50A 1
11
Modified vehicle and stripped chassis run/
start.
40A 2
12
Starter solenoid relay.
30A 2
13
Run start relay.
40A 2
14
Modified vehicle and stripped chassis
battery.
40A 2
15
Auxiliary air conditioning blower.
50A 2
16
Trailer tow battery charge.
50A 2
17
Trailer tow park feed.
Electric trailer brake.
30A 2
18
Trailer brake controller.
Auxiliary switch #1.
30A 2
19
Auxiliary switch #2.
30A 2
20
Fuel pump (6.2L).
20A 2
21
Not used.
—
22
Air conditioning clutch relay.
—
23
Horn relay (stripped chassis).
—
24
Run start relay.
—
25
Not used.
—
26
132
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
27
Back-up lamp.
20A 3
28
Air conditioning clutch.
10A 3
29
Brake on/off switch.
10A 3
30
Cluster battery (stripped chassis).
10A 3
31
Blower motor.
50A 2
32
Anti-lock brake system pump.
40A 2
33
Stripped chassis horn.
20A 2
34
Powertrain control module relay.
40A 2
35
Ignition switch (stripped chassis).
20A 2
36
Trailer tow left-hand side stop lamp and
direction indicator lamp relay.
—
37
Trailer tow right-hand side stop lamp and
direction indicator lamp relay.
—
38
Back-up lamp relay.
—
39
Blower motor relay.
—
40
Not used.
—
41
Diagnostic connector, fleet telematics
modem, and FordPass Connect (stripped
chassis).
15A
3
42
Fuel pump (6.8L).
20A 3
43
Auxiliary switch #3.
10A 3
44
Auxiliary switch #4.
15A 3
45
Powertrain control module keep alive
memory power.
10A 3
46
133
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Canister vent control valve.
Powertrain control module relay coil.
Anti-lock brake system relay coil.
40A 2
47
Trailer tow stop lamp and direction indic-
ator lamps.
20A 2
48
Wiper motor.
30A 2
49
Not used.
—
50
Cutaway.
20A 2
51
Modified vehicle and stripped chassis run/
start relay coil.
10A 3
52
Anti-lock brake system run/start feed.
10A 3
53
Fuel pump relay coil.
10A 3
54
Not used.
—
55
Not used.
—
56
Trailer tow park lamp.
20A 3
57
Trailer tow back-up lamp.
15A 3
58
Not used.
—
59
Not used.
—
60
Not used.
—
61
Auxiliary switch #2 relay.
—
62
Trailer tow battery charge.
30A 2
63
Not used.
—
64
Power point 2 (glove box).
20A 2
65
Power point 3 (cutaway B+).
20A 2
66
134
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Power point 1 (instrument panel).
20A 2
67
Modified vehicle.
50A 2
68
Not used.
—
69
Stripped chassis.
30A 2
70
Not used.
—
71
Cigarette lighter/power point.
20A 2
72
Not used.
—
73
Power seat.
30A 2
74
Vehicle power 1.
20A 3
75
Powertrain control module power.
Vehicle power 2.
20A 3
76
Powertrain control module emissions
related components.
Vehicle power 3.
10A 3
77
Powertrain control module general
components.
Vehicle power 4.
15A 3
78
Engine ignition coil relay coil.
Vehicle power 5.
10A 3
79
Transmission.
Cluster run/start (stripped chassis).
10A 3
80
Not used.
—
81
Not used.
—
82
Fuel pump diode.
—
83
135
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
84
Auxiliary switch #1 relay.
—
85
1 Cartridge fuse
2 A1S fuse
3 Mini fuse
Passenger Compartment Fuse
Panel WARNING: Always disconnect the
battery before servicing high current
fuses.
Note: If your vehicle is equipped with dual
batteries, disconnecting the primary
under-hood battery does not remove power
from all circuits.
The fuse panel is located to the left of the
brake pedal and mounted onto the lower
left cowl panel. Remove the fuse panel
cover to access the fuses.
To remove a fuse, use the fuse puller tool
provided on the inside of the fuse panel
cover. Protected Component
Fuse Rating
Fuse or Relay
Number
Inverter B+.
30A
1
Not used (spare).
15A
2
Not used (spare).
15A
3
Not used (spare).
30A
4
136
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing FusesE269934

Protected Component
Fuse Rating
Fuse or Relay
Number
Passenger compartment fuse panel.
10A
5
Brake-shift interlock.
Direction indicators lamps.
20A
6
Hazard lamps.
Stop lamps.
Left-side headlamp low beam.
10A
7
Right-side headlamp low beam.
10A
8
Courtesy lamps.
15A
9
Switch illumination.
15A
10
Not used (spare).
10A
11
Not used (spare).
7.5A
12
Mirrors.
5A
13
SYNC
10A
14
Global positioning system module.
Not used (spare).
10A
15
Not used (spare).
15A
16
Door locks.
20A
17
Not used (spare).
20A
18
Not used (spare).
25A
19
Diagnostic connector, fleet telematics
modem, and FordPass Connect (except
stripped chassis).
15A
20
Not used (spare).
15A
21
Parking lamps.
15A
22
License plate lamps.
Headlamp high beams.
15A
23
Horn (except stripped chassis).
20A
24
Demand lighting.
10A
25
Cluster (except stripped chassis).
10A
26
137
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses