Mazda 3 bm – fuse and relay

Mazda 3 bm (3rd generation) was produced in 2014, 2015, 2016, 2017, 2018, 2019 and delivered worldwide. In this publication you will find a designation of fuses and relays Mazda 3 bm with box diagrams, photo examples of execution and their location. Separately, we note the cigarette lighter fuse.

Mazda 3 bm

The designation may differ from that shown. Check your diagrams on the back of the protective cover or other technical documentation.

Wrong generation?

Description Mazda 3 bk (1st generation)
Description Mazda 3 bl (2nd generation)

Engine compartment fuse box

It is located at the bottom of the left pillar, on the driver’s side, behind the protective cover. To access the block, it must be moved in the direction of the arrow.

where is the passenger compartment fuse box

For example


Fuse block diagram in the cabin of the Mazda 3 BM


130A P.SEAT D – Seat adjustment
225А D.LOCK – Central locking
325А P.WINDOW2 – Power windows
420А SEAT WARM – Heated seats
515A R.OUTLET3 – Additional power sockets
615A SRS2 / ESCL – Seat load sensor
710A SUNROOF – Luke
87.5A M.DEF – Heated rear-view mirrors
915А R.OUTLET1 – Additional power sockets
107,5А MIRROR – Adjustment of mirrors
1115А F.OUTLET – Cigarette lighter
127,5A AT IND – Automatic transmission gear shift indicator

Fuse number 11 at 15A is responsible for the cigarette lighter.

Engine compartment fuse box

Located on the left side of the engine compartment, next to the battery.

Photo example of a block under the hood of a Mazda 3

To access, remove the cover

Access to the unit under the hood


Scheme on the back of the cover


Block diagram under the hood


115А FOG – Fog lights
220А H / L HI – High beam headlamps
320А H / CLEAN – Headlight washer
410A STOP – Brake lights
515A ROOM – Additional light (overlays)
67,5А ENG + B – Engine management system
7FUEL WARM – fuel heating
825A HAZARD – Hazard warning system, direction indicators
930A ABS / DSCS – ABS, Dynamic Stability Control System
107,5A METER2 – Instrument cluster
117.5A AUDIO2 – Audio system second option
1225A BOSE – Bose® Audio System (if equipped)
1315A AUDIO1 – Audio system first option
1415A FUEL PUMP – Fuel system, fuel pump
1515A HID R DRL – Right headlight (RH) * 1, Daytime running lights
1615A AT PUMP – transmission control system
1715А HORN – Signal, horn
1815А TAIL – Rear lights, license plate lights, parking lights, front side marker lights
2015А AT- TRANSAXLE control systems
2115А R.WIPER – Rear wiper
227.5A A / C – Air Conditioning
2315A ENGINE3 – Engine management system
2415A ENGINE2 – Engine management system
2515A ENGINE1 – Engine management system
265A GLOW SIG – Engine Management
2720А EVVT – Engine management system
2820А WIPER – Washer and cleaner for front glass
2930A DCDC REG -To protect various circuits
3140А ADD FAN DE – Cooling fan
3230А P.WINDOW1 – Power windows
3315A H / L LOW R – Low beam headlamp, right (RH) * 2
3415A H / L LOW L HID L – Headlamp left (LH) * 1, Headlamp low beam left (LH) * 2
3510A METER1 – Instrument panel
3630A IG2 – For protection of various circuits
3840А ADD FAN DE – Cooling fan
3940A DCDC DE – To protect additional circuits
407.5A SRS1 – Air bag
4115A ENGINE. IG1 – Engine management system
4215A C / U IG1 – For protection of various circuits

Check the relay assignment with the diagram.


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