2002 MAZDA MODEL B3000 4WD ECU

When the battery is disconnected or a new battery installed, the
transmission must learn its adaptive strategy. As a result of this, the
transmission may shift firmly. This operation is considered normal and
will fully update transmission operation to its optimum shift feel.
Understanding gearshift positionsWARNING: Hold the brake pedal down while you move the
gearshift lever from P (Park) to another position. If you do not
hold the brake pedal down, your vehicle may move unexpectedly
and injure someone.
P (Park)
To put your vehicle in gear, start the engine, depress the brake pedal,
then move gearshift lever out of P (Park).
Always come to a complete stop
before shifting into P (Park). Make
sure the gearshift lever is securely
latched in P (Park). This position
locks the transmission and prevents
the rear wheels from turning. WARNING: Always set the parking brake fully and make sure
the gearshift is latched in P (Park). Turn the ignition to the
LOCK 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.
Driving
160

The fuses are coded as follows:
Fuse/RelayLocation 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 Right stop/turn trailer tow
connector
4 — Not used
5 15A 4x4 control module
6 2A Brake pressure switch
7 7.5A Left stop/turn trailer tow
connector
8 — Not used
9 7.5A Brake pedal position switch
10 7.5A Speed control servo/amplifier
assembly, Generic Electronic
Module (GEM), Shift lock
actuator, Turn signals
11 7.5A Instrument cluster, 4x4, Main light
switch, Central Security Module
(CSM)
12 — Not used
13 20A Brake pedal position switch
14 10A or Not Used 10A: Anti-lock Brake System (ABS) Control Module (if
equipped)
15 — Not used
16 30A Windshield wiper motor, Wiper
HI/LO relay, Wiper run/park relay
17 20A Cigar lighter, Data Link Connector
(DLC)
Roadside Emergencies
186

2.3L engine (if equipped)
The high-current fuses are coded as follows:
Fuse/RelayLocation 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
1 234 521 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
5352
51 56
56 B
56 A
50 50 B
50 A
47
45 45 B
45 A
4646 B
46 A
11 12 13 14 15
16 17 18 19 20
Roadside Emergencies
189

Fuse/RelayLocation 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
Roadside Emergencies
190

•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
Be especially careful when inspecting or servicing your vehicle.
• Do not work on a hot engine.
• When the engine is running, make sure that loose clothing, jewelry or
long hair does not get caught up 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 lit cigarettes, open flames and other lit material away from
the battery and all fuel related parts.
If you disconnect the battery, the engine must “relearn” its idle
conditions before your vehicle will drive properly, as explained in the
Battery section of this chapter.
Working with the engine off
• Automatic transmission:
1. Set the parking brake and ensure the gearshift is securely latched in P (Park).
2. Turn off the engine and remove the key.
3. Block the wheels to prevent the vehicle from moving unexpectedly.
Maintenance and Specifications
232

•Manual transmission:
1. Set the parking brake.
2. Depress the clutch and place the gearshift in 1 (First).
3. Turn off the engine and remove the key.
4. Block the wheels to prevent the vehicle from moving unexpectedly.
Working with the engine on
• Automatic transmission:
1. Set the parking brake and ensure the gearshift is securely latched in P (Park).
2. Block the wheels to prevent the vehicle from moving unexpectedly.
Note: Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
• Manual transmission:
1. Set the parking brake, depress the clutch and place the gearshift in neutral.
2. Block the wheels to prevent the vehicle from moving unexpectedly.
Note: Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
WARNING: The cooling fan is automatic and may come on at
any time. Always disconnect the negative terminal of the
battery before working near the fan.
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.
Maintenance and Specifications
233

ENGINE OIL
Checking the engine oil
Refer to the service maintenance section for the appropriate intervals for
checking the engine oil.1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait a few minutes for the oil to drain into the oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P (Park) (automatic transmission) or 1 (First) (manual
transmission).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level indicator (dipstick).
• 2.3L I4 engine
Maintenance and Specifications
238

Checking and adding manual transmission fluid (if equipped)1. Clean the filler plug.
2. Remove the filler plug and inspect the fluid level.
3. Fluid level should be at bottom of the opening.
4. Add enough fluid through the filler opening so that the fluid
level is at the bottom of the
opening.
5. Install and tighten the fill plug securely.
Use only fluid that meets Mazda specifications. Refer to Lubricant
Specifications in this chapter.
Maintenance and Specifications
266