2009 MAZDA MODEL B4000 CAB PLUS 4 TRUCK trailer

underbody structure. Use a frame-mounted weight distributing hitch for
trailers over 2,000 lb. (907 kg).
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 all running
lights, brake lights, turn signals and hazard lights are working. Contact
your authorized dealer or trailer rental agency for proper instructions
and equipment for hooking up trailer lamps.
Using a step bumper
The optional step bumper is equipped with an integral hitch and requires
only a ball with a 3/4 inch (19 mm) shank diameter. The bumper has a
2,000 lb (907 kg) trailer weight and 200 lb (91 kg) tongue weight
capability.
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Tires, Wheels and Loading
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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
ColorFunction 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.
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.
1
2
34
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Tires, Wheels and Loading
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WARNING:Always set the parking brake fully and make sure
the gearshift is latched in P (Park). Turn the ignition to the off
position and remove the key whenever you leave your vehicle.
R (Reverse)
With the gearshift lever in R (Reverse), the vehicle will move backward.
Always come to a complete stop before shifting into and out of R
(Reverse).
N (Neutral)
With the gearshift lever in N (Neutral), the vehicle can be started and is
free to roll. Hold the brake pedal down while in this position.
(Overdrive)
The normal driving position for the
best fuel economy. Transmission
operates in gears one through
five.
(Overdrive) can be
deactivated by pressing the
transmission control switch on the end of the gearshift lever.
This will illuminate the O/D OFF
lamp and activate Drive.
Drive (not shown)
Drive is activated when the transmission control switch is pressed.
• This position allows for all forward gears except overdrive.
• O/D OFF lamp is illuminated.
• Provides engine braking.
• Use when driving conditions cause excessive shifting from O/D to
other gears. Examples: city traffic where continuous shifting in and
out of overdrive occurs, hilly terrain, heavy loads, trailer towing and
when engine braking is required.
• To return to O/D (overdrive mode), press the transmission control
switch. The O/D OFF lamp will not be illuminated.
• O/D (Overdrive) is automatically returned each time the key is turned
off.
O/D
ON/OFF
O/D OFF
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Driving
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The fuses are coded as follows:
Fuse/RelayLocation Fuse Amp
Rating Passenger Compartment Fuse
Panel Description
1 5A Instrument panel dimmer switch
2 10A Trailer tow park lamps
3 10A Right low beam headlamp
4 10A Left low beam headlamp
5 5A Windshield wiper module
(RUN/ACCY)
6 10A Radio (RUN/ACCY), Door switch
illumination
7 — Not used
8 10A Restraints Control Module (RCM),
PADI (Passenger Air bag
Deactivation Indicator), Occupant
Classification Sensor (OCS)
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Roadside Emergencies
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Fuse/RelayLocation Fuse Amp
Rating Passenger Compartment Fuse
Panel Description
29 20A Cigar lighter, Diagnostic connector
(OBD II)
30 5A Power mirrors
31 20A Front park lamps, Rear park
lamps, License plate lamps,
Dimmer switch, Trailer tow park
lamps
32 5A Brake switch (logic), Brake-shift
interlock
33 5A Instrument cluster battery feed
(B+)
34 20A Power point
35 15A Power locks
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
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.
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Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
12 — Not used
13 30A** Blower motor (climate control)
14 — Not used
15 — Not used
16 — Not used
17 40A** Anti-lock Brake System (ABS)
module
18 — Not used
19 20A** Engine fan
20 — Not used
21 10A* PCM keep alive power, Canister
purge valve solenoid
22 — Not used
23 30A* Fuel pump motor, Fuel injectors
24 — Not used
25 10A* A/C clutch solenoid
26 — Not used
27 — Not used
28 — Not used
29 30A* Wipers/washer
30 — Not used
31 — Not used
32 — Not used
33 30A* Anti-lock Brake System (ABS)
module
34 — Not used
35 — Not used
36 — Not used
37 — Not used
38 7.5A* Trailer tow (right turn)
39 15A* PCM power
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Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
40 — Not used
41 10A* Automatic transmission
42 7.5A* Trailer tow (left turn)
43 20A* Engine fan relay coil, A/C relay,
Engine sensors, VMV solenoid
44 15A* Ignition coil, Capacitor
45A — Not used
45B — Not used
46A — Fuel pump relay, Fuel injectors
relay
46B — Not used
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
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Roadside Emergencies
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Fuse/RelayLocation Fuse Amp
Rating Protected Circuits
12 — Not used
13 30A** Blower motor (climate control)
14 — Not used
15 — Not used
16 — Not used
17 40A** Anti-lock Brake System (ABS)
module
18 — Not used
19 — Not used
20 — Not used
21 10A* PCM keep alive power, Canister
purge valve solenoid
22 — Not used
23 30A* Fuel pump motor, Fuel injectors
24 — Not used
25 10A* A/C clutch solenoid
26 — Not used
27 20A* 4x4 module
28 — Not used
29 30A* Wipers/washer
30 — Not used
31 15A* Foglamps
32 — Not used
33 30A* Anti-lock Brake System (ABS)
module
34 — Not used
35 — Not used
36 — Not used
37 — Not used
38 7.5A* Trailer tow (right turn)
39 15A* PCM power
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Roadside Emergencies
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