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Fuse/Relay
LocationFuse Amp
RatingFuse Description
12 20A* Daytime Running Lamps (DRL), Blend door
actuator, Climate mode, Back-up, Heated
seats, Trailer ABS, Exhaust brake
13 — Not used
14 — Not used
15 7.5A* Body builder prep/trailer socket stop (6.0L
Power Stroke engine only)
16 5A* WABCO hydraulic ABS Run feed
17 — Not used
18 10A* Fuel transfer pump (duel fuel tanks only)
19 — Not used
20 10A* Engine ECM power relay (6.0L Power Stroke
engine only)
21 10A* GEM (Hydraulic brake vehicles only)
22 10A* Engine IDM2 logic power (6.0L Power Stroke
engine only)
23 — Not used
24 — Not used
101 30A** Bendix Air ABS relay (Air brake vehicles
only)
WABCO ABS modulator relay (Hydraulic
brake vehicles only)
102 20A** Body builder prep Run feed
103 20A** Ignition switch (Junction box fuses 8, 9, 10,
11, 19, 29, 30)
104 20A** Power point
105 20A** Power door locks
106 30A** Headlamps
107 50A** Junction box battery feed (1, 2, 3, 4, 12, 13,
14, 15)
108 40A** Fuel heater (Cummins engine only)
109 40A** Power windows
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Fuse/Relay
LocationFuse Amp
RatingFuse Description
110 30A** Wiper power relay (Park, Low/High speed)
111 30A** Body builder prep
112 40A** Blower motor
113 30A** Heated seats
114 25A** WABCO ABS battery feed (Hydraulic brake
vehicles only)
115 20A** Ignition switch, Central Junction Box fuses 8,
9, 10, 11, Starter motor relay
116 30A** Body builder prep
117 20A** Body builder prep/trailer socket stop
(Caterpillar and Cummins engines only)
118 60A** Hydraulic brake trailer two fuse block
119/120 60A** Hydraulic brake trailer two fuse block
Air brake trailer two fuse block
121/122 60A** HydroMax motor
Air brake trailer two fuse block
201 — Washer pump relay
202 — Wiper speed relay
203 — Wiper run/park relay
204 — Neutral start relay (6.0L Power Stroke engine
only)
Exhaust brake relay (Caterpillar and
Cummins engines only)
205 — RH stop/turn relay
206 — LH stop/turn relay
207 — Drain valve heater relay
208 — Back-up lamps relay
209 — Stoplamps relay
301 — Fuel heater/Fuel transfer pump relay
302 — Park lamps relay
303 — Blower motor relay
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Roadside Emergencies
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Fuse/Relay
LocationFuse Amp
RatingDescription
R2 — Trailer tow stop lamp relay
R3 — Trailer tow park/marker lamp relay
R4 — Trailer tow tail lamp relay
R5 — Not used
R6 — Not used
R7 — Trailer tow left turn/stop lamp relay
(combined)
Trailer tow left turn lamp relay (separate)
R8 — Trailer tow right turn/stop lamp relay
(combined)
Trailer tow right turn lamp relay (separate)
*Maxi fuse
Inline fuses
Your vehicle has two inline fuses located in/on the battery cables by the
battery. A 10A fuse for the transmission control module and a 40A fuse
for the engine control module. Refer toAutomatic transmissionin the
Drivingchapter andBatteryin theMaintenance and Specifications
chapter for more information.
JUMP STARTING
The gases around the battery can explode if exposed to flames,
sparks, or lit cigarettes. An explosion could result in injury or
vehicle damage.
Batteries contain sulfuric acid which can burn skin, eyes and
clothing, if contacted.
Do not attempt to push-start your vehicle. Automatic
transmissions do not have push-start capability; doing so may
damage the catalytic converter.
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Before connecting a fast-charger, booster battery or installing a new
battery, make sure the ground polarities of the fast-charger, booster
battery or alternator (when installing a battery) are matched to the
ground polarity of the vehicle battery. Improper usage of the
fast-charger, hook-up of booster battery or installation of a new battery
can cause damage to the electrical system or to the alternator. Do not
attempt to polarize the alternator.
Preparing your vehicle
1.Use only a 12–volt supply to start your vehicle.Do not attach the
jumper cables to the glow plug relay as this could severely damage the
glow plugs, injector driver module and PCM.
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 (+) jumper cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
+–+–
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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.Do notuse fuel lines, engine rocker
covers or the intake manifold asgroundingpoints.
Do not connect the end of the second cable to the negative (-)
terminal of the battery to be jumped. A spark may cause an
explosion of the gases that surround the battery.
5. Ensure that the cables are clear of fan blades, belts, moving parts of
both engines, or any fuel delivery system parts.
+–+–
+–+–
+–+–
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Jump starting
1. Start the engine of the booster vehicle and run the engine at
moderately increased speed.
2. Start the engine of the disabled vehicle.
3. Once the disabled vehicle has been started, run both engines for an
additional three minutes before disconnecting the jumper cables.
Removing the jumper cables
Remove the jumper cables in the reverse order that they were
connected.
1. Remove the jumper cable from thegroundmetal surface.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
2. Remove the jumper cable on the negative (-) connection of the
booster vehicle’s battery.
+–+–
+–+–
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3. Remove the jumper cable from the positive (+) terminal of the booster
vehicle’s battery.
4. Remove the jumper cable from the positive (+) terminal of the
disabled vehicle’s battery.
After the disabled vehicle has been started and the jumper cables
removed, allow it to idle for several minutes so the engine computer can
relearnits idle conditions.
WRECKER TOWING INSTRUCTIONS
Before moving the towed vehicle, check for adequate road clearance of
vehicle components. It is recommended the towed vehicle be unloaded
prior to being towed to reduce any abnormal load to the vehicle
components resulting from the towing procedures. Before towing, be
sure to fully release the parking brake. The spring-actuated type parking
brake can be reset by recharging the air system with at least 64 psi (441
kPa) of air. If the brake system will not retain air pressure, then the
spring brakes must be released manually. Refer toParking brakein the
Drivingchapter
Note:For towing, make sure the vehicle is securely connected to the
tow vehicle and the tow vehicle parking brakes are applied before
releasing the disabled vehicle’s spring brakes.
+–+–
+–+–
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GENERAL SERVICING GUIDELINES AND PRECAUTIONS
As with any machine, care should be taken to avoid being injured when
performing maintenance, repairs or system checks. Improper or
incomplete service could result in the vehicle not working properly
which, in turn, may result in personal injury or damage to the vehicle or
equipment. It is the operator’s responsibility to see that the vehicle
receives proper care and maintenance. If you have any questions about
performing some service, have the service done by a qualified technician.
Servicing guidelines
When servicing your vehicle, always:
•turn off the ignition unless the particular procedure calls for the
engine to be running.
•set the parking brake or chock the wheels.
•use support stands, not a jack, whenever you must be under a raised
vehicle.
•do not smoke.
•wear safety glasses for eye protection.
•operate the engine in a well-ventilated area
•do not work on the brakes or the clutch unless the proper precautions
are taken to avoid inhaling friction material dust.
•do not wear loose-fitting clothing, hanging jewelry, watches or rings.
•avoid contact with hot metal parts. Allow the hot components to cool
before working with, or around them.
Quality service parts are available through your dealer. If dealer parts are
not used, the owner must make sure that the parts that are being used
are equivalent quality to dealer parts.
The use of inferior parts can adversely affect the quality and
reliability of your vehicle which, in turn, can result in property
damage, personal injury or death.
Note:To avoid damage to the vehicle’s electrical components, disconnect
the positive (+) and negative (-) battery cables prior to electric welding.
Attach the welder ground cable as close as possible to the part being
welded. If it is necessary to weld close to an electrical component, it is
recommended that the electronic component be temporarily removed.
Follow the periodic lubrication procedures and regular inspection
intervals as outlined. Have your dealer or service center inspect your
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