Mazda B2300 (2003 year). Manual — part 9
4x4 w/automatic transmission
Engine
Rear axle
ratio
Maximum
GCWR - kg
(lbs.)
Maximum
trailer
weight - kg
(lbs.)
Maximum
frontal area
of trailer -
m
2
(ft
2
)
Regular Cab
3.0L
All
3,402 (7,500)
1,742 (3,840)
4.64 (50)
Cab Plus/Cab Plus 4
3.0L
All
3,402 (7,500)
1,651 (3,640)
4.64 (50)
4.0L
All
4,309 (9,500)
2,504 (5,520)
4.64 (50)
For high altitude operation, reduce GCW by 2% per 300 meters (1, 000
ft.) of elevation.
For definition of terms used in this table, see Vehicle loading earlier
in this chapter.
To determine maximum trailer weight designed for your vehicle, see
Calculating the load earlier in this chapter.
Maximum trailer weight is shown. The combined weight of the
completed towing vehicle (including hitch, passengers and cargo) and
the loaded trailer must not exceed the Gross Combined Weight Rating
(GCWR).
WARNING: Do not exceed the GVWR or the GAWR specified on
the certification label.
The certifcation label is found on the driver’s door latch pillar.
WARNING: Towing trailers beyond the maximum recommended
gross trailer weight exceeds the limit of the vehicle and could
result in engine damage, transmission damage, structural
damage, loss of vehicle control, vehicle rollover and personal
injury.
Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Driving
134
Hitches
For towing trailers up to 907 kg (2,000 lb), use a weight carrying hitch
and ball which uniformly distributes the trailer tongue loads through the
underbody structure. Use a frame-mounted weight distributing hitch for
trailers over 907 kg (2,000 lb).
Do not install a single or multi-clamp type bumper hitch, or a hitch
which attaches to the axle. Underbody mounted hitches are acceptable if
they are installed properly. Follow the towing instructions of a reputable
rental agency.
Whenever a trailer hitch and hardware are removed, make sure all
mounting holes in the underbody are properly sealed to prevent noxious
gases or water from entering.
Safety chains
Always connect the trailer’s safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer’s safety chains, cross the
chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency
gives to you.
Do not attach safety chains to the bumper.
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer’s
specifications. The trailer brakes must meet local and Federal
regulations.
WARNING: Do not connect a trailer’s hydraulic brake system
directly to your vehicle’s brake system. Your vehicle may not
have enough braking power and your chances of having a
collision greatly increase.
The braking system of the tow vehicle is rated for operation at the
GVWR not GCWR.
Trailer lamps
Trailer lamps are required on most towed vehicles. Make sure your
trailer lamps conform to local and Federal regulations. See your dealer or
trailer rental agency for proper instructions and equipment for hooking
up trailer lamps.
Driving
135
Using a step bumper
The optional step bumper is equipped with an integral hitch and requires
only a ball with a 19 mm (3/4 inch) shank diameter. The bumper has a
907 kg (2,000 lb.) trailer weight and 91 kg (200 lb.) tongue weight
capability.
The rated capacities (as shown in this guide) for trailer towing with the
factory bumper are only valid when the trailer hitch ball is installed
directly into the ball hole in the bumper. Addition of bracketry to either
lower the ball hitch position or extend the ball hitch rearward will
significantly increase the loads on the bumper and its attachments. This
can result in the failure of the bumper or the bumper attachments. Use
of any type of hitch extensions should be considered abuse.
Trailer tow connector
The trailer tow connector is located
under the rear bumper, on the
driver’s side of the vehicle.
Refer to the following chart for information regarding the
factory-equipped trailer tow connector:
Trailer tow connector
Color
Function
Comment
1. Dark Green
Trailer right-hand
turn signal
Circuit activated when brake
pedal is depressed or when
ignition is on and right-hand
turn signal is applied.
2. Yellow
Trailer left-hand turn
signal
Circuit activated when brake
pedal is depressed or when
ignition is on and left-hand
turn signal is applied.
1
2
3
4
Driving
136
Trailer tow connector
Color
Function
Comment
3. Tan/White
Tail lamp
Relay controlled circuit
activated when the park
lamps/headlamps are on.
4. White
Ground
Matching vehicle circuit
returns to battery’s negative
ground.
Driving while you tow
When towing a trailer:
• Turn off the speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
• Consult your local motor vehicle speed regulations for towing a trailer.
• To eliminate excessive shifting, use a lower gear. This will also assist
in transmission cooling. (For additional information, refer to the
Driving with a 5–speed automatic transmission section in this
chapter.
• Anticipate stops and brake gradually.
• Do not exceed the GCWR rating or transmission damage may occur.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to your service maintenance section for
more information.
Trailer towing tips
• Practice turning, stopping and backing up before starting on a trip to
get the feel of the vehicle trailer combination. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
• Allow more distance for stopping with a trailer attached.
• The trailer tongue weight should be 10–15% of the loaded trailer
weight.
• After you have traveled 80 km (50 miles), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
• To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park)
(automatic transmission) or N (Neutral) (manual transmissions).
Driving
137
• Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer’s wheels.
Launching or retrieving a boat
Disconnect the wiring to the trailer before backing the trailer
into the water. Reconnect the wiring to the trailer after the
trailer is removed from the water.
When backing down a ramp during boat launching or retrieval:
• do not allow the static water level to rise above the bottom edge of
the rear bumper.
• do not allow waves to break higher than 15 cm (6 inches) above the
bottom edge of the rear bumper.
Exceeding these limits may allow water to enter vehicle components:
• causing internal damage to the components.
• affecting driveability, emissions and reliability.
Replace the rear axle lubricant any time the axle has been submerged in
water. Rear axle lubricant quantities are not to be checked or changed
unless a leak is suspected or repair required.
RECREATIONAL TOWING
Follow these guidelines if you have a need for recreational towing. An
example of recreational towing would be towing your vehicle behind a
motorhome. These guidelines are designed to ensure that your
transmission is not damaged.
4x2 equipped with a manual transmission:
Before you have your vehicle towed:
• Release the parking brake.
• Move the gearshift to the neutral position.
• Turn the key in the ignition to the OFF/UNLOCKED position.
• The maximum recommended speed is 88 km/h (55 mph).
• The maximum recommended distance is unlimited.
• The vehicle must be towed in the forward position to ensure no
damage is done to the internal transfer case components.
In addition, it is recommended that you follow the instructions
provided by the aftermarket manufacturer of the towing
apparatus if one has been installed.
Driving
138
4x2 equipped with automatic transmission and 4x4 vehicles:
4x2 vehicles with automatic transmissions or 4x4 vehicles with an
electronic-shift transfer case and automatic transmission, follow these
guidelines for recreational towing:
• Release the parking brake.
• Turn the key in the ignition to the OFF/UNLOCKED position.
• Place the transmission in N (Neutral).
• Do not exceed a distance of 80 km (50 miles).
• Do not exceed 56 km/h (35 mph) vehicle speed.
• The vehicle must be towed in the forward position to ensure no
damage is done to the internal transfer case components.
If a distance of 80 km (50 miles) or a speed of 56 km/h (35 mph) must
be exceeded, you must disconnect the front (4x4 only) and rear
driveshafts. Mazda recommends the driveshafts be removed/installed only
by a qualified technician. See your local dealer for driveshaft
removal/installation.
Improper removal/installation of the driveshaft can cause
transmission fluid or transfer case fluid loss, damage to the
driveshaft and internal transmission and transfer case
components.
CAMPER BODIES
Your pickup is not recommended for slide–in camper bodies.
Driving
139
HAZARD FLASHER
The hazard flasher is located on the
steering column, just behind the
steering wheel. The hazard flashers
will operate when the ignition is in
any position.
Push in the flasher control and all
front and rear direction signals will
flash. Press the flasher control again
to turn them off. Use it when your
vehicle is disabled and is creating a
safety hazard for other motorists.
Note: With extended use, the flasher may run down your battery.
FUEL PUMP SHUT-OFF SWITCH
FUEL
RESET
This device stops the electric fuel pump from sending fuel to the engine
when your vehicle has had a substantial jolt.
After an accident, if the engine cranks but does not start, this switch
may have been activated.
Roadside Emergencies
140
This switch is located in the front
passenger’s footwell, by the kick
panel access cover.
To reset the switch:
1. Turn the ignition OFF.
2. Check the fuel system for leaks.
3. If no leaks are apparent, reset
the switch by pushing in on the
reset button.
4. Turn the ignition ON.
5. Wait a few seconds and return
the key to OFF.
6. Make another check of leaks.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
Note: Always replace a fuse with one that has the specified amperage
rating. Using a fuse with a higher amperage rating can cause severe wire
damage and could start a fire.
15
Roadside Emergencies
141
Standard fuse amperage rating and color
COLOR
Fuse
rating
Mini
fuses
Standard
fuses
Maxi
fuses
Cartridge
maxi
fuses
Fuse link
cartridge
2A
Grey
Grey
—
—
—
3A
Violet
Violet
—
—
—
4A
Pink
Pink
—
—
—
5A
Tan
Tan
—
—
—
7.5A
Brown
Brown
—
—
—
10A
Red
Red
—
—
—
15A
Blue
Blue
—
—
—
20A
Yellow
Yellow
Yellow
Blue
Blue
25A
Natural
Natural
—
—
—
30A
Green
Green
Green
Pink
Pink
40A
—
—
Orange
Green
Green
50A
—
—
Red
Red
Red
60A
—
—
Blue
—
Yellow
70A
—
—
Tan
—
Brown
80A
—
—
Natural
—
Black
Passenger compartment fuse panel
The fuse panel is located on the
left-hand side of the instrument
panel facing the driver’s side door.
Pull the panel cover outward to
access the fuses.
Roadside Emergencies
142
To remove a fuse use the fuse puller tool provided.
The fuses are coded as follows:
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse Panel
Description
1
5A
Power mirror switch
2
10A
Daytime Running Lights (DRL), Back-up
lamps, Transmission, Passenger air bag
deactivation switch, Blower motor relay
3
7.5A
Left stop/turn trailer tow connector
4
—
Not used
5
15A
4x4 control module
6
2A
Brake pressure switch
7
7.5A
Right stop/turn trailer tow connector
8
—
Not used
9
7.5A
Brake pedal position switch
Roadside Emergencies
143
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse Panel
Description
10
7.5A
Speed control servo/amplifier assembly,
Generic Electronic Module (GEM), Shift
lock actuator, Turn signals, 4x4
11
7.5A
Instrument cluster, 4x4, Main light switch,
Central Security Module (CSM), Generic
Electronic Module (GEM)
12
—
Not used
13
20A
Brake pedal position switch
14
10A
Anti-lock Brake System (ABS) control
module
15
—
Not used
16
30A
Windshield wiper motor, Wiper HI/LO
relay, Wiper run/park relay
17
20A
Cigar lighter, Data Link Connector (DLC)
18
—
Not used
19
25A
Powertrain Control Module (PCM) power
diode, Ignition, PATS (Passive Anti-Theft
System)
20
7.5A
Generic Electronic Module (GEM), Radio
21
15A
Hazard flasher
22
20A
Auxiliary power socket
23
—
Not used
24
7.5A
Clutch Pedal Position (CPP) switch,
Starter interrupt relay
25
—
Not used
26
10A
Battery saver relay, Auxiliary relay box,
Restraint Central Module (RCM), Generic
Electronic Module (GEM), Instrument
cluster
27
—
Not used
28
7.5A
Generic Electronic Module (GEM), Radio
29
20A
Radio
Roadside Emergencies
144
Fuse/Relay
Location
Fuse Amp
Rating
Passenger Compartment Fuse Panel
Description
30
—
Not used
31
—
Not used
32
—
Not used
33
15A
Headlamps, Daytime Running Lamps
(DRL) module, Instrument cluster
34
—
Not used
35
15A
Horn relay (if not equipped with a Central
Security Module)
36
—
Not used
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.
WARNING: Always disconnect the battery before servicing high
current fuses.
WARNING: To reduce risk of electrical shock, 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
Battery section of the Maintenance and specifications chapter.
Roadside Emergencies
145
2.3L engine (if equipped)
The high-current fuses are coded as follows:
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
1
50A**
I/P fuse panel
2
—
Not used
3
—
Not used
4
—
Not used
5
—
Not used
6
50A**
Anti-lock Brake System (ABS) pump
motor
7
30A*
Powertrain Control Module (PCM)
8
20A*
Central security module, Power door locks,
Remote entry
9
—
Not used
10
—
Not used
11
50A**
Starter relay, Ignition switch
12
20A*
Power windows
1
2
3
4
5
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
6
7
8
9
10
55
49
48
54
53
52
51
56
56 B
56 A
50
50 B
50 A
47
45
45 B
45 A
46
46 B
46 A
11
12
13
14
15
16
17
18
19
20
Roadside Emergencies
146
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
13
—
Not used
14
—
Not used
15
—
Not used
16
40A**
Blower motor
17
20A**
Auxiliary cooling fan
18
—
Not used
19
—
Not used
20
—
Not used
21
10A*
PCM memory
22
—
Not used
23
20A*
Fuel pump motor
24
30A*
Headlamps
25
10A*
A/C clutch relay
26
—
Not used
27
—
Not used
28
30A*
ABS module
29
—
Not used
30
15A*
Trailer Tow
31
20A*
Foglamp, Daytime Running Lamps (DRL)
32
—
Not used
33
15A*
Park lamp, Central security module
34
—
Not used
35
—
Not used
36
—
Not used
37
—
Not used
38
10A*
Left headlamp low beam
39
—
Not used
40
—
Not used
41
20A*
Heated oxygen sensors
42
10A*
Right headlamp low beam
43
—
(Resistor)
Roadside Emergencies
147
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
44
—
Not used
45A
—
Wiper HI/LO relay
45B
—
Wiper park/run relay
46A
—
Fuel pump relay
46B
—
Trailer tow relay
47
—
Starter relay
48
—
Auxiliary cooling fan relay
49
—
Not used
50
—
Not used
51
—
Not used
52
—
Not used
53
—
PCM Diode
54
—
PCM Relay
55
—
Blower motor relay
56A
—
A/C clutch relay
56B
—
Front washer pump relay
* Mini Fuses ** Maxi Fuses
Roadside Emergencies
148
3.0L and 4.0L engines (if equipped)
The high-current fuses are coded as follows:
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
1
50A**
I/P fuse panel
2
—
Not used
3
—
Not used
4
—
Not used
5
—
Not used
6
50A**
Anti-lock Brake System (ABS) Pump
Motor
7
30A*
Powertrain Control Module (PCM)
8
20A*
Power door locks, Remote entry
9
—
Not used
10
—
Not used
11
50A**
Starter relay, Ignition switch
12
20A*
Power windows
13
20A*
4x4 motor
Roadside Emergencies
149
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