Fuses and relays Mazda 3 (BL; 2009 - 2013)

3 is a compact car produced by Mazda Motor Corporation in Japan. In the manufacturer's home country, it is called Axela. Mazda 3 was introduced in 2003 as the successor series to the Familia (323 or - export names). In this article we will understand in detail fuse box diagrams Mazda 3 (second generation; codename BL) 2009, 2010, 2011, 2012, 2013 years of manufacture.

Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.

In the engine compartment

There are 3 fuse boxes and relays located here.

Main fuse box

The main mounting block in the engine compartment is located on the left side between the battery and the left fender (shown by the arrow).
1. Press the catch on the plastic protective cover of the mounting side and remove it.

General view.

No. Description Amps
F1 Engine cooling fan motor 40
F2 Engine control unit - ENG MAIN 40
F3 Protection of various electrical circuits - BTN 1 50
F4 Air conditioner 7.5
F5 High beam bulbs in the headlight clusters 20
F6 Fog lamp bulbs 15
F7 Headlight washer 20
F8 Ventilation hatch 15
F9 Right windshield heater element 40
F10 Left windshield heater element 40
F11 Engine cooling fan motor 40
F12 Interior lamps 15
F13 Traction control unit 15
F14 DSC anti skid control unit 20
F15 Protection of various electrical circuits - BTN 2 7.5
F17 Heating and ventilation fan electric motor 40
F19 Rear window heater element 30
F20 Ignition switch - IG KEY 2 40
F21 Ignition switch - IG KEY 1 40
F22 Horn 15
F23 Brake lamps 15
F24 Engine control unit - ENG+B 10
F25 Fuel pump fuse 25
F26 ABS control unit (ABS system) 40
F27 Front seat heating element 20
F28 Electrohydraulic power steering control unit 80
F30 ABS IG control unit 10
F32 Dipped beam bulb in the right headlight unit 15
F33 Dipped beam bulb in the left headlight unit 15
F34 Instrument cluster illumination lamps 7.5
F35 Parking light bulbs in taillights 15
F36 Engine management system - ENG ING 15
F37 Engine control unit - ENG BAR 1 15
F38 Engine control unit - ENG BAR 2 20
F39 ETV throttle valve actuator 15
Purpose of relay modules in the block
R1 Fuel injectors (L3 / TC)
R2 dipped headlights
  • Automatic transmission main relay (LF, L5
  • Fuel pump speed control relay (L3  TK)
R4 Headlight relay - high beam
R5 Fuel pump relay
R6 Daytime Running Lights
R7 Starter
R8 Blower relay
R9 Horn relay
R10 TNS / marker lamps
R11 Rear window heater
R12 Air conditioner
R13 Main relay

Power board on battery

A separate board of "power" elements is installed on the "plus" terminal of the battery.
1. Unclip the two latches of the plastic protective cover of the battery cover and remove it.
2. Use a ring wrench or a "10" head to loosen the nut tightening bolt of the wire terminal on the "minus" terminal of the battery, take the wire aside.
3. With a head "on 8" unscrew two nuts fastening the wire lugs to the fuse.

Location of the "power" fuses on the battery
No. Description Amps
F1 Alternator 100
F2 No -
Diagram of the relay and fuse box on the battery
No. Decoding Amps
F1 Engine cooling fan motor 30
F2 30
1 oversize relay  
2 small relay  

Additional elements

Two additional blocks are located in the engine compartment on the left side (shown by arrows)
Since the covers on the additional relay blocks are the same and the inscriptions on the relay and fuse assignments are duplicated, the specific purpose of a particular element can only be known experimentally.

In the passenger compartment

The mounting block is located to the left of the steering column at the end of the instrument panel. Remove the trim to gain access.

Access example.

No. Decoding Amps
F1 Radio recorder 30
F2 Engine cooling system 30
F3 Power window gear motors 50
F4 central lock 7.5
F5 Not used -
F6 -
F7 Electric steering wheel lock 15
F8 Airbag system 15
F9 Not used -
F10 Alarm 15
F11 Protection of various electrical circuits - METER 15
F12 Electrical outlets 15
F13 Rear door window wiper 15
F14 Mazda 3 bl cigarette lighter fuse 20
F15 Not used -
F16 Heating and ventilation fan electric motor 10
F17 External rear view mirror gearmotors 10
F18 Starter signal 10
F19 Not used -
F20 Audio system 7.5
F21 Heated exterior mirror elements 7.5
F22 Side lighting system for turning 7.5
F23 Not used -
F24 Engine control unit 10
F25 Not used -
F26 -
F27 -
F28 -
F29 -
F30 Power window gearmotors 25
F31 Not used -
F32 Windshield wiper and washer 25
F33 Not used -
F34 -
Related fuse diagrams
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