FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS 1999 10.G Service Manual

Fuse/Relay
LocationFuse Amp
RatingDescription
9 20A Trailer tow Electric Brake controller feed,
Body builder right rear turn/stop feed, Body
builder left rear turn/stop feed, Body builder
stop lamp feed, Trailer left turn/stop fuse
feed, Trailer right turn/stop fuse feed
10 5A Instrument cluster memory
11 30A Wiper motor/module power feed
12 10A Trailer tow right turn feed
13 10A ABS Module
14 10A Warning chime module, Power brake assist
module*, Instrument cluster power,
Instrument cluster warning lamps,
Transmission control switch
15 15A Left turn signal relay contacts
16 20A Body builder battery (+12V) feed
17 5A Body builder radio feed
18 — Not Used
19 5A Headlamp relay
20 — Not Used
21 15A Right turn signal relay contacts
22 — Not Used
23 — Not Used
24 — Not Used
25 10A Right headlamp
26 10A Speed control module, Brake shift interlock
actuator
27 — Not used
28 — Not used
29 — Not used
30 — Not used
31 10A Left headlamp
32 10A Backup lamp feed
Roadside emergencies
41

Fuse/Relay
LocationFuse Amp
RatingDescription
33 — Not used
34 — Not used
35 20A Body builder high beam feed, High beam
indicator
36 — Not used
37 — Not used
38 10A Body builder accessory feed (run only)
39 — Not used
40 — Not used
41 10A Instrument illumination
42 — Not used
43 — Not used
44 — Not used
Relay 1 — Left turn signal relay
Relay 2 —— Courtesy lamps relay
Relay 3 Right turn signal relay
*Vehicles with Hydromax brake assist only
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.
Roadside emergencies
42

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingDescription
1 5A* Power Brake Assist Module***
2 20A* Horn Feed
3 20A* 4R100 Transmission, Vapor Management
Valve Solenoid, Heated Exhaust Gas Oxygen
(HEGO) Sensors, EVR Solenoid
4 5A* Powertrain Control Module Memory
5 15A* Powertrain Control Module Power, Fuel
Pump Relay Coils, Fuel Injectors, IAC
Solenoid, Mass Air Flow Sensor
6 20A* Front Park Lamp Feed, Rear Park Lamp
Feed, Trailer Tow Running Lamp Relay Coil,
I/P Dimmer Module
7 15A* Starter Relay Coil, BB Neutral Sense
19 29
18 28
17 27
16 26
15 25
14 24
13
11 12
910
78
56
34
1223
22
21
20
6
5
4
3
2
1DIODE2
DIODE1
Roadside emergencies
43

Fuse/Relay
LocationFuse Amp
RatingDescription
8 10A* Brake Pressure Switch, Stop Lamp Switch for
Power Brake Assist Module*, Speed Control
Module, Powertrain Control Module, ABS
module, Brake Shift Interlock Actuator
9 5A* Alternator
10 20A* Daytime Running (DRL) Lamps
11 30A* Ignition Coils, Radio Capacitors #1 and #2,
Powertrain Control Module Relay
12 20A* Trailer Tow Running Lamps Feed, Trailer Tow
Backup Lamps Feed, IP-Backup Lamp Feed
13 30A** Trailer Tow Electric Brake Controller Feed
14 60A** Right Turn Signal Relay Contacts, Left Turn
Signal Relay Contacts, Hazard Flasher, Stop
Lamp Switch - Trailer Brake Control Feed,
Stop Lamp Switch - Brake Lamp Feeds
15 -- Not Used
16 60A** ABS Module
17 -- Not Used
18 -- Not Used
19 -- Not Used
20 40A** Powertrain Control Module Relay
21 20A** Fuel Pump Motor
22 20A** Diagnostic Tool Connector, Cigar Lighter
23 40A** Blower Motor Relay Contacts
24 40A** Courtesy Lamp Relay Contacts, Cluster
Memory, BB Battery Feed
25 50A** Ignition Switch Feed #2 (Terminals B4 & B5)
26 60A** Ignition Switch Feed #3 (Terminals B1 & B3)
27 30A** Headlamp Switch (Headlamps On), Flash To
Pass Switch
28 — Not Used
29 60A** Power Brake Assist Motor
Roadside emergencies
44

Fuse/Relay
LocationFuse Amp
RatingDescription
Relay 1 — Daytime Running Lamps On/Off Relay
Relay 2 — Fuel Pump Relay
Relay 3 — Horn Relay
Relay 4 — Two Speed Fuel Pump Relay
Relay 5 — Blower Motor Relay
Relay 6 — Powertrain Control Module Relay
Diode 1 — Powertrain Control Module Diode
Diode 2 — Park Brake Diode
* Mini Fuses ** Maxi Fuses ***Vehicles with Hydromax brake assist
only
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Tire change procedure
Preparing to change the tire
To prevent the vehicle from moving when you change a tire, be
sure the parking brake is set, then block (in both directions) the
wheel that is diagonally opposite (other side and end of the vehicle) to
the tire being changed.
1. Park on a level surface.
2. Activate the warning flashers.
3. Place the gearshift in P (Park).
Roadside emergencies
45

4. Apply the parking brake and turn
engine OFF.
5. Block the wheel that is diagonally
opposite the tire you are changing.
The parking brake is on the
transmission. Therefore, the vehicle
will not be prevented from moving
when a rear wheel is lifted, even if
the parking brake is applied. Be
sure to block both directions of the wheel that is diagonally opposite to
the wheel that is being lifted.
If the vehicle slips off the jack, you or someone else could be
seriously injured.
6. Remove the spare tire and jack from the storage location.
7. Loosen the wheel nut by pulling up on the handle of the lug nut
wrench about one-half turn (counterclockwise). Do not remove the
wheel lug nuts until you raise the tire off the ground.
Replacing the tire
To lessen the risk of personal injury, do not put any part of your
body under the vehicle while changing a tire. Do not start the
engine when your vehicle is on the jack. The jack is only meant for
changing the tire.
Roadside emergencies
46

8. Position the jack to raise the front or rear wheel.
•Never use the front or rear
differential as a jacking point.
Rear axle jacking points:
Front axle jacking points:
Place the jack under the front axle.
9. Raise the vehicle until the wheel is completely off the ground.
10. Remove the lug nuts with the lug nut wrench.
11. Replace the flat tire with the spare tire.
12. Use the lug nut wrench to screw
the lug nut snugly against the
wheel.
13. Lower the vehicle.
14. Remove the jack and fully
tighten the lug nuts in the following pattern:
Roadside emergencies
47

Never use wheels or lug
nuts different than the
original equipment as this could
damage the wheel or mounting
system. This damage could allow
the wheels to come off while the
vehicle is being driven.
15. Replace any wheel trim.
16. Stow the jack, handle and lug wrench.
17. Unblock the wheels.
On vehicles equipped with dual rear wheels, retighten the wheel lug nuts
to the specified torque at 160 km (100 miles), and again at 800 km (500
miles) of new vehicle operation and after any wheel disturbance (tire
rotation, changing a flat tire, wheel removal, etc.).
Bolt size Wheel lug nut torque*
Nm Lb-ft
M14 x 1.5 200-225 150-165
* Torque specifications are for nut and bolt threads free of dirt and rust. Use
only Ford recommended replacement fasteners.
On all two-piece flat wheel nuts,
apply one drop of motor oil between
the flat washer and the nut. Do not
apply motor oil to the wheel nut
threads or the wheel stud threads.
When a wheel is installed, always remove any corrosion, dirt or
foreign materials present on the mounting surfaces of the wheel or
the surface of the front disc brake hub and rotor that contacts the wheel.
Installing wheels without correct metal-to-metal contact at the wheel
mounting surfaces can cause the wheel nuts to loosen and the wheel to
come off while the vehicle is in motion, resulting in loss of control.
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.
1
3 4
27 6
5 8
Roadside emergencies
48

Batteries contain sulfuric acid which burns skin, eyes, and
clothing.
Preparing your vehicle
1.Use only a 12–volt supply to start your vehicle.
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 hood of the disabled vehicle
making sure the two vehiclesdo 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. Ensure that vent caps are tight and level.
5. Turn the heater fan on in both vehicles to protect any electrical
surges. Turn all other accessories off.
Connecting the jumper cables
1. Connect the positive (+) booster cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
+–+–
Roadside emergencies
49

2. Connect the other end of the positive (+) cable to the positive (+)
terminal of the assisting battery.
3. Connect the negative (-) cable to the negative (-) terminal of the
assisting battery.
4. Make the final connection of the negative (-) cable to an exposed
metal part of the stalled vehicle’s engine, away from the battery and the
carburetor/fuel injection system.
+–+–
+–+–
+–+–
Roadside emergencies
50