Mazda 3 BM/BN (2014 – 2018) Fuse Box Diagrams & Location
The Mazda 3 BM/BN (2014–2018) fuse box protects essential electrical systems throughout the vehicle. Knowing the fuse box locations and diagrams makes it easier to identify fuse ratings, protected circuits, and replacement points when troubleshooting electrical issues or maintaining your Mazda 3.
Fuse Box Location
Passenger Compartment Fuse Box
The fuse box is located on the left side of the vehicle, near the door.
Engine Compartment Fuse Box
Fuse Box Diagrams
Passenger Compartment Fuse Box
| № | DESCRIPTION | AMP RATING | PROTECTED COMPONENT |
|---|---|---|---|
| 1 | P.SEAT D | 30 A | Power seat (Some models) |
| 2 | D.LOCK | 25 A | Power door locks |
| 3 | P.WINDOW2 | 25 A | Power windows |
| 4 | SEAT WARM | 20 A | Seat warmer (Some models) |
| 5 | R.OUTLET3 | 15 A | Accessory sockets |
| 6 | SRS2/ESCL | 15 A | Seat weight sensor (Some models) |
| 7 | SUNROOF | 10 A | Moonroof (Some models) |
| 8 | M.DEF | 7.5 A | Mirror defroster (Some models) |
| 9 | R.OUTLET1 | —
2015-2018: 15A |
— |
| 10 | MIRROR | 7.5 A | Power control mirror |
| 11 | F.OUTLET | 15 A | Accessory sockets |
| 12 | AT IND | 7.5 A | AT shift indicator (Some models) |
| 13 | — | — 2015-2018: 7.5A |
— |
| 14 | — | — 2015-2018: 10A |
— |
| 15 | — | —
2015-2018: 15A |
— |
Engine Compartment Fuse Box
| № | DESCRIPTION | AMP RATING | PROTECTED COMPONENT |
|---|---|---|---|
| 1 | FOG | 15 A | Fog lights (Some models) |
| 2 | H/L HI | 20 A | Headlight high beam (Some models) |
| 3 | H/CLEAN | 20 A | — |
| 4 | STOP | 10 A | Brake lights |
| 5 | ROOM | 15 A | Overhead light |
| 6 | ENG+B | 7.5 A | Engine control system |
| 7 | FUEL WARM | — 2015-2018: 15A |
— |
| 8 | HAZARD | 25 A | Hazard warning flashers, Turn signal lights |
| 9 | ABS/DSCS | 30 A | ABS, Dynamic stability control system |
| 10 | METER2 | —
2015-2018: 7.5A |
— |
| 11 | AUDIO2 | 7.5 A | Audio system |
| 12 | BOSE | 25 A | Bose Sound System-equipped model (Some models) |
| 13 | AUDIO1 | 15 A | Audio system |
| 14 | FUEL PUMP | 15 A | Fuel system |
| 15 | HID R DRL | 15 A | Headlight (RH) (With xenon fusion headlights), Daytime running lights (Some models) |
| 16 | AT PUMP | —
2015-2018: 15A |
— |
| 17 | HORN | 15 A | Horn |
| 18 | TAIL | 15 A | Taillights, License plate lights, Parking lights, Front side-marker lights |
| 19 | — CNG ST HEATER |
—
2015-2018: 15A
|
— 2017-2018: Heated steering wheel (Some models) |
| 20 | AT | 15 A | Transaxle control system |
| 21 | R.WIPER | 15 A | Rear window wiper (Some models) |
| 22 | A/C | 7.5 A | Air conditioner |
| 23 | ENGINE3 | 15 A | Engine control system |
| 24 | ENGINE2 | 15 A | Engine control system |
| 25 | ENGINE1 | 15 A | Engine control system |
| 26 | GLOW SIG | —
2015-2018: 5A |
— |
| 27 | EVVT | 20 A | Engine control system |
| 28 | WIPER | 20 A | Front window wiper and washer |
| 29 | DC DC REG | —
2015-2018: 30A |
— |
| 30 | — FUEL PUMP2 |
—
2015-2018: 30A |
—
2017-2018: Electric parking brake (LH) (Some models) |
| 31 | ADD FAN DE | — 2015-2018: 40A |
— |
| 32 | P.WINDOW1 | 30 A | Power windows |
| 33 | H/L LOW R | 15 A | Headlight low beam (RH) (With halogen headlights) |
| 34 | H/L LOW L HID L | 15 A | Headlight (LH) (With xenon fusion headlights), Headlight low beam (LH) (With halogen headlights)
2017-2018: Headlight (LH) (With LED headlights), Headlight low beam (LH) (With halogen headlights) |
| 35 | METER1 | 10 A | Instrument cluster |
| 36 | IG2 | 30 A | For protection of various circuits |
| 37 | —
LPG EPBR LPG |
—
2015-2018: 30A |
—
2017-2018: Electric parking brake (RH) (Some models) |
| 38 | FAN DE | — 2015-2018: 40A |
— |
| 39 | DC DC DE | —
2015-2018: 40A |
— |
| 40 | SRS1 | 7.5 A | Air bag |
| 41 | ENGINE. IG1 | 15 A | Engine control system |
| 42 | C/U IG1 | 15 A | For protection of various circuits |
| 43 | — | — | — |
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