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Protected ComponentFuse RatingFuse or RelayNumber
Not used.—20
Right-hand direction indicator feed.15A121
Trailer tow direction indicators.20A122
Cluster run/accessory.10A123
Not used.—24
Body builder right-hand low beam head-lamp feed.10A125
Not used.—26
Not used.—27
Not used.—28
Not used.—29
Not used.—30
Body builder left-hand low beam head-lamp feed.10A131
Not used.—32
Body builder reverse lamp power.10A133
Body builder reverse gear.10A134Trailer tow reverse lamps.
Body builder high beam feed.20A135High beam indicator.
Transmission control switch.10A136
Not used.—37
Body builder off/run.10A138
Not used.—39
Not used.—40
Instrument cluster lighting/switch illumin-ation.10A141
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Protected ComponentFuse RatingFuse or RelayNumber
Not used.—42
Not used.—43
Not used.—44
Trailer tow right-hand direction indicator.—Relay 1
Trailer tow left-hand direction indicator.—Relay 2
Right-hand direction indicator.—Relay 3
Left-hand direction indicator.—Relay 4
Not used.—Relay 5
Daytime running lamps.—Relay 6Parking brake.
Daytime running lamps on/off.—Relay 7
Not used.—Diode 1
Not used.—Diode 2
Not used.—F1
Not used.—F2
Not used.—F3
Not used.—F4
Not used.—F5
Not used.—F6
Not used.—F7
Not used.—F8
Not used.—F9
Not used.—F10
Not used.—F11
Not used.—F12
1 Micro 2 fuse.
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F59 and UPS Passenger Compartment Fuse Panel
Protected ComponentFuse RatingFuse or RelayNumber
Not used.—F1
Right/left rear direction indicator.20AF2Right/left direction indicator relay coil.Instrument cluster right/direction indicator.
Left turn signal.15AF3Hazard lamps.
Blower motor relay coil.15AF4
Right front/rear direction indicator.15AF5Right front/rear hazard lamp.
Anti-lock brake system module(HydroMax).10AF6
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Protected ComponentFuse RatingFuse or RelayNumber
Right low beam headlamp.10AF7
Daytime running lamps relays.5AF8
Left low beam headlamp.10AF9
Transmission control switch.10AF10
Cluster battery (+12V) #1.10AF11
Not used.—F12
Cluster battery (+12V) #2.10AF13
Switch illumination.10AF14Instrument cluster lighting.
Body builder battery (+12V) feed.20AF15
Not used.—F16
Trailer tow direction indicators.20AF17Trailer tow stop lamps.Trailer tow hazard lamps.
Body builder off/run.10AF18
Trailer brake control module brake on/offsignal.10AF19
Body builder brake lamps.Left/right brake lamps.
Body builder run/accessory feed.10AF20
Anti-lock brake system module.10AF21Hydroboost.Instrument cluster.
Wiper/washer module.30AF22Wiper feed.
Reverse lamps.10AF23
Body builder radio feed.5AF24
Trailer tow reverse lamps.10AF25
Cluster run/accessory.10AF26
High beam indicator.20AF27
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Protected ComponentFuse RatingFuse or RelayNumber
Headlamps hi-beam.
Daytime running lamps.Micro relayR1Parking brake.
Daytime running lamps on/off.Micro relayR2
Right-hand direction indicator.Micro relayR3
Trailer tow right-hand direction indicator.Micro relayR4
Left-hand direction indicator.Micro relayR5
Trailer tow left-hand direction indicator.Micro relayR6
Not used.—R7
Not used.—R8
Not used.—R9
Not used.—D1
Not used.—D2
Not used.—D3
CHANGING A FUSE
Fuses
WARNING: Always replace a fusewith one that has the specifiedamperage rating. Using a fuse with ahigher amperage rating can cause severewire damage and could start a fire.
If electrical components in the vehicle arenot working, a fuse may have blown. Blownfuses are identified by a broken wire withinthe fuse. Check the appropriate fusesbefore replacing any electricalcomponents.
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Fuse Types
Fuse TypeCallout
Micro 2A
Micro 3B
MaxiC
MiniD
M CaseE
J CaseF
J Case Low ProfileG
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GENERAL INFORMATION
Have your vehicle serviced regularly to helpmaintain its roadworthiness and resalevalue. There is a large network ofauthorized dealers that are there to helpyou with their professional servicingexpertise. We believe that their speciallytrained technicians are best qualified toservice your vehicle properly and expertly.They are supported by a wide range ofhighly specialized tools developedspecifically for servicing your vehicle.
If your vehicle requires professional service,an authorized dealer can provide thenecessary parts and service. Check yourwarranty information to find out whichparts and services are covered.
Use only recommended fuels, lubricants,fluids and service parts conforming tospecifications. Motorcraft® parts aredesigned and built to provide the bestperformance in your vehicle.
Precautions
•Do not work on a hot engine.
•Make sure that nothing gets caught inmoving parts.
•Do not work on a vehicle with theengine running in an enclosed space,unless you are sure you have enoughventilation.
•Keep all open flames and other burningmaterial (such as cigarettes) awayfrom the battery and all fuel relatedparts.
Working with the Engine Off
1.Set the parking brake and shift thetransmission to park (P).
2.Switch off the engine.
3.Block the wheels.
Working with the Engine On
WARNING: To reduce the risk ofvehicle damage and personal burninjuries, do not start your engine with theair cleaner removed and do not removeit while the engine is running.
1.Set the parking brake and shift thetransmission to park (P).
2.Block the wheels.
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UNDER HOOD OVERVIEW - COMMERCIAL CHASSIS
Engine coolant reservoir. See Engine Coolant Check (page 96).A
Engine oil filler cap. See Engine Oil Check (page 95).B
Automatic transmission fluid dipstick. See Automatic Transmission FluidCheck (page 101).C
Engine compartment fuse box. See Fuses (page 71).D
Engine oil dipstick. See Engine Oil Dipstick (page 95).E
Air filter assembly. See Changing the Engine Air Filter (page 107).F
Power steering fluid reservoir. See Power Steering Fluid Check (page 104).G
Brake fluid reservoir. See Brake Fluid Check (page 102).H
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