Page 145 of 256
Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box Description
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
3.0L and 4.0L engines (if equipped)
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Roadside Emergencies
145
Page 146 of 256
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
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 —Not used
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 20A* 4x4 module
28 —Not used
29 —Not used
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Roadside Emergencies
146
Page 147 of 256
Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box Description
30 —Not used
31 15A* Foglamps
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
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
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Roadside Emergencies
147
Page 180 of 256

CHART SYMBOLS
I: Inspect, and if necessary correct, clean or replace
A: Adjust
R: Replace
L: Lubricate
Normal driving service intervals–perform at the months or distances
shown, whichever occurs first.
Maintenance Item Maintenance Interval (Number of months or Miles (km),
whichever comes first)
Months 4 8 12 16 20 24 28 32 36 40 44 48
x 1000 miles 5 10 15 20 25 30 35 40 45 50 55 60 (x 1000 km) (8) (16) (24) (32) (40) (48) (56) (64) (72) (80) (88) (96)
ENGINE
Engine oil —every 6 months R RRRRRRRRRR R
Oil filter —every 6 months R RRRRRRRRRR R
PCV valve
AIR CLEANER
Air cleaner filter RR
IGNITION SYSTEM
Spark plugs *4
COOLING SYSTEM
Engine Coolant (green) Replace at first 45,000 miles (72,000 km) or 36 months, after that, every 30,000 miles (48,000 km)or 24 months
Engine Coolant (yellow) Replace at first 100,000 miles (160,000 km) or 60 months; after that, every 50,000 miles (80,000 km)or 36 months
Coolant condition and protection,
hoses and clamps —annually —prior
to cold weather every 12 months III I
CHASSIS AND BODY
Wheel lug nut torque *1 IIIIIIIIIII I
Inspect tires for wear and rotate (X
= recommended interval for optimal
tire life) IXIXXIXXIXX I
Clutch reservoir fluid level IIIIII
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Maintenance and Specifications
180
Page 182 of 256

*5 The California Air Resources Board has determined that the failure to
perform this maintenance item will not nullify the emission warranty nor
limit recall liability prior to completion of the vehicle’s useful life.
Schedule I continued
Maintenance Item Maintenance Interval (Number of months or Miles (km),
whichever comes first)
Months 52 56 60 64 68 72 76 80 84 88 92 96
x 1000 miles 65 70 75 80 85 90 95 100 105 110 115 120 (x 1000 km)
(104)(112) (121) (128) (136) (144) (152) (160) (168) (176) (184) (192)
ENGINE
Engine oil —every 6 months R RRRRRRRRRR R
Oil filter —every 6 months R RRRRRRRRRR R
PCV valve R
AIR CLEANER
Air cleaner filter RR
IGNITION SYSTEM
Spark plugs *4 R
COOLING SYSTEM
Engine Coolant (green) Replace at first 45,000 miles (72,000 km) or 36 months, after that, every 30,000 miles (48,000 km)or 24 months
Engine Coolant (yellow) Replace at first 100,000 miles (160,000 km) or 60 months; after that, every 50,000 miles (80,000 km)or 36 months
Coolant condition and protection,
hoses and clamps —annually —prior
to cold weather every 12 months III I
CHASSIS AND BODY
Wheel lug nut torque *1 IIIIIIIIIII I
Inspect tires for wear and rotate (X
= recommended interval for optimal
tire life) XXIXXIXXIXX I
Clutch reservoir fluid level IIIIII
Front wheel bearings (4x2) L
Disc brake system III I
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Maintenance and Specifications
182
Page 186 of 256

While operating your vehicle
•Note any changes in the sound of the exhaust or any smell or exhaust
fumes in the vehicle.
• Check for vibrations in the steering wheel. Notice any increased
steering effort or looseness in the steering wheel, or change in the
straight ahead position.
• Notice if your vehicle constantly turns slightly or “pulls”to one side
when traveling on a smooth, level road.
• When stopping, listen and check for strange sounds, pulling to one
side, increased brake pedal travel or “hard to push”brake pedal.
• If any slipping or changes in the operation of your transmission occur,
check the transmission fluid level.
• Check automatic transmission Park function.
• Check parking brake.
At least monthly
• Check function of all interior and exterior lights.
• Check tires for wear and proper air pressure.
• Check engine oil level.
• Check coolant level in the coolant reservoir.
• Check washer fluid level.
At least twice a year (for example, every spring and fall)
• Check power steering fluid level.
• Check clutch fluid level (if equipped).
• Check and clean body and door drain holes.
• Check and lubricate all hinges, latches, and outside locks.
• Check and lubricate door rubber weather strips.
• Check parking brake for proper operation.
• Check lap/shoulder belts and seat latches for wear and function.
• Check air pressure in spare tire.
• Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened with washer fluid.
• Check safety warning lamps (brake, ABS, air bag, safety belt) for
operation.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Maintenance and Specifications
186
Page 187 of 256

•Check cooling system fluid level and verify coolant specific gravity is
correct for summer or winter conditions.
• Check battery water level (non-maintenance free).
• Check battery connections and clean if necessary.
SERVICE RECOMMENDATIONS
To help you service your vehicle:
• We highlight do-it-yourself items in the engine compartment for easy
location.
• We provide a Scheduled Maintenance section which makes tracking
routine service easy.
If your vehicle requires professional service, your dealership can provide
necessary parts and service. Check your “Warranty Information”to find
out which parts and services are covered.
Use only recommended fuels, lubricants, fluids and service parts
conforming to specifications. Genuine Mazda parts are designed and built
to provide the best performance in your vehicle.
PRECAUTIONS WHEN SERVICING YOUR VEHICLE
• Do not work on a hot engine.
• Make sure that nothing gets caught in moving parts.
• Do not work on a vehicle with the engine running in an enclosed
space, unless you are sure you have enough ventilation.
• Keep all open flames and other lit material away from the battery and
all fuel related parts.
Working with the engine off
• Automatic transmission:
1. Set the parking brake and shift to P (Park).
2. Turn off the engine and remove the key.
3. Block the wheels.
• Manual transmission:
1. Set the parking brake, depress the clutch and place the gearshift in 1 (First).
2. Turn off the engine and remove the key.
3. Block the wheels.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Maintenance and Specifications
187
Page 188 of 256
Working with the engine on
•Automatic transmission:
1. Set the parking brake and shift to P (Park).
2. Block the wheels.
• Manual transmission:
1. Set the parking brake, depress the clutch and place the gearshift in N (Neutral).
2. Block the wheels.
Note: Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
OPENING THE HOOD
1. Inside the vehicle, pull the hood release handle located under
the bottom of the instrument
panel near the steering column.
2. Go to the front of the vehicle and release the auxiliary latch
that is located under the front
center of the hood.
3. Lift the hood and support it with the prop rod.
2004 Mazda B Series (mbs)
Owners Guide (post-2002-fmt)
Canadian French (fr-can)
Maintenance and Specifications
188