2004 MAZDA MODEL B4000 TRUCK engine

Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
12 — Not used
13 30A** Blower motor (climate control)
14 — Not used
15 30A** Anti-lock Brake System (ABS) (solenoids)
16 — Not used
17 40A** ABS (motor)
18 — Not used
19 20A** Engine fan
20 — Not used
21 10A* PCM
22 — Not used
23 20A* Fuel pump
24 — Not used
25 10A* A/C clutch solenoid
26 — Not used
27 — Not used
28 — Not used
29 — Not used
30 — Not used
31 — Not used
32 — Not used
33 — Not used
34 — Not used
35 — Not used
36 — Not used
37 — Not used
38 7.5A* Trailer tow (right turn)
39 — Not used
40 — Not used
41 15A* HEGOs
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
144

Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
42 7.5A* Trailer tow (left turn)
43 — Not used
44 — Not used
45A — Wiper HI/LO relay 45B — Wiper Park/Run relay
46A — Fuel pump relay 46B — Washer pump relay 47 — Engine fan relay
48 — Starter relay
49 — Not used
50 — Not used
51 — Not used
52 — Not used
53 — Not used
54 — PCM relay
55 — Blower relay
56A — A/C clutch solenoid relay 56B — Not used
* Mini Fuses ** Maxi Fuses
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
145

3.0L and 4.0L engines (if equipped)
The high-current fuses are coded as follows:
Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
1 50A** Passenger compartment fuse
panel
2 — Not used
3 50A** Passenger compartment fuse
panel
4 — Not used
5 50A** Passenger compartment fuse
panel
6 — Not used
7 40A** Starter relay fuse
8 — Not used
9 40A** Ignition switch
10 — Not used
11 30A** Powertrain Control Module (PCM)
relay fuse
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
146

Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
42 7.5A* Trailer tow (left turn)
43 — Not used
44 — Not used
45A — Wiper HI/LO relay 45B — Wiper Park/Run relay
46A — A/C clutch solenoid 46B — Washer pump relay 47 — PCM relay
48A — Fuel pump relay 48B — Fog lamp relay 51 — Not used
52 — Not used
53 — Not used
54 — Not used
55 — Blower relay
56 — Starter relay
* Mini Fuses ** Maxi Fuses
OVERHEATING
If the temperature gauge indicates overheating and you experience
power loss, you hear a loud knocking or pinging noise, the engine is
probably too hot.
If this happens: 1. Drive safely to the side of the road and park off the right-of-way.
2. Shift the automatic transmission into P (Park) or the manual transmission into the neutral position, and apply the parking brake.
3. Turn off the air conditioner.
WARNING: Steam from an overheated engine is dangerous. The
escaping steam could seriously burn you. Open the hood ONLY
after steam is no longer escaping from the engine.
4. Check whether coolant or steam is escaping from under the hood or from the engine compartment.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
148

•If steam is coming from the engine compartment:do not go near
the front of the vehicle. Stop the engine, then turn the ignition switch
to the ON position without starting the engine. The radiator cooling
fans will start to cool the engine.
• If neither coolant nor steam is escaping: open the hood and idle
the engine until it cools. If this does not lower the temperature, stop
the engine and let it cool.
5. Check the coolant level. If it is low, look for leaks in the radiator hoses and connections, heater hoses and connections, radiator and
water pump.
If you find a leak or other damage, or if coolant is still leaking, stop the
engine and call an Authorized Mazda dealer.
See Adding coolant in theMaintenance and specifications section. If
you find no problems, the engine is cool and no leaks are obvious,
carefully add coolant as required.
WARNING: When the engine and radiator are hot, scalding
coolant and steam may shoot out under pressure and cause
serious injury. Do not remove the cooling system cap when the
engine and radiator are hot.
Note: If the engine continues to overheat or frequently overheats, have
the cooling system inspected. The engine could be seriously damaged
unless repairs are made.
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.
WARNING: The use of tire sealants is not recommended and
may damage your tires.
Temporary spare tire information (if equipped)
Your vehicle may be equipped with a conventional spare tire that may be
different in size (smaller diameter and narrower width) than other tires
on your vehicle. If this is the case, your spare tire is considered
“temporary” and the spare wheel will be labeled as such. Replace this
tire with a tire of the same size, speed rating and load carrying capacity
as the other road tires as soon as possible.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
149

4. If your vehicle is equipped with P265/75 R15 AT tires, do not stow aflat or inflated full size spare tire in the spare tire carrier. The flat
full size tire should be stowed and tied down in the pickup box bed
until it can be repaired.
5. If removed, install the spare tire carrier lock on the access hole above the bumper.
Tire change procedure WARNING: When one of the front wheels is off the ground, the
transmission alone will not prevent the vehicle from moving or
slipping off the jack, even if the vehicle is in P (Park)
(automatic transmission) or R (Reverse) (manual
transmission).
WARNING: To help 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.
WARNING: If the vehicle slips off the jack, you or someone
else could be seriously injured.
1. Park on a level surface, activate hazard flashers and place
gearshift lever in P (Park)
(automatic transmission) or 1
(First) (manual transmission).
2. Set the parking brake and turn engine OFF.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
153

3. Block the diagonally oppositewheel.
4. Insert tapered end of the lug wrench behind hub caps and
twist them off.
5. Loosen each wheel lug nut one-half turn counterclockwise
but do not remove them until
the wheel is raised off the
ground.
6. Position the jack according to the following guides and turn
the jack handle clockwise until the tire is a maximum of 25 mm (1
inch) off the ground.
WARNING: 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.
• Front
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
154

WARNING: 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 WARNING: The gases around the battery can explode if
exposed to flames, sparks, or lit cigarettes. An explosion could
result in injury or vehicle damage.
WARNING: 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.
Preparing your vehicle
When the battery is disconnected or a new battery is installed, the
transmission must relearn its shift strategy. As a result, the transmission
may have firm and/or soft shifts. This operation is considered normal and
will not affect function or durability of the transmission. Over time, the
adaptive learning process will fully update transmission operation. 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 vehicles do 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.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
157