2013 Mazda 3 BL Fuse Box Diagram

The 2013 Mazda 3 (BL) has 3 fuse boxes. Choose the one you’re looking at.

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Left-side fuse block

For 2013, the last model year of the BL, Mazda finally corrected the heading over this plate: the October 2012 handbook, form 8CV6-EA-12H Edition 2, calls it "Fuse block (Left side)" where all three earlier books said passenger's side. The hardware is unmoved - the block is in the end panel of the dashboard on the left of the car, behind a cover that pops off once the front door is open, with the fuse puller stored over in the engine bay block.

The plate itself has not changed since 2010. Cartridge positions 1, 2 and 3 sit one above the other at the left edge; blades 4 to 21 fill six columns of three, each column read from the top down before moving right; and the two-row bank along the bottom holds 22, 24, 26, 28, 30, 32, 33 and 34 above 23, 25, 27, 29 and 31, the shorter lower row leaving the familiar step in the bottom-right corner of the housing. The 2013 table is identical to the 2012 one, so a reader with either of the two facelift books will find 33 BOSE 2 rated at 25 A and positions 1 and 7 printed bare.

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No.	Amp	Description
1		BOSE: Bose sound system position. Rated 30 A up to the 2011 book; from the facelift edition the Bose feed moves to position 33 and this socket is printed without a rating.
2	30 AJCASE	P SEAT: power driver seat motors, where the seat is power-adjusted.
3	30 AJCASE	P.WIND: main power window feed.
4	25 AMINI	D.LOCK: power door lock motors. Spelled "D LOCK" and called a door lock motor in the pre-facelift books.
5		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
6		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
7		ESCL: electronic steering lock position, printed without a rating from the 2011 book onwards.
8	15 AMINI	SAS: air bag sensor and control module.
9		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
10	15 AMINI	HAZARD: hazard warning flashers and the turn signal lights, which the facelift book adds to this row.
11	15 AMINI	METER: instrument cluster. Listed as "For protection of various circuits" before the facelift.
12	15 AMINI	OUTLET: accessory power socket.
13	15 AMINI	R.WIPER: rear window wiper and washer, on the five-door body.
14	15 AMINI	CIGAR: accessory socket in the console. The pre-facelift books call this row the lighter.
15		ROOM2: second interior lighting position, named from the facelift book but left without a rating.
16	10 AMINI	HEATER: air conditioner blower motor.
17	10 AMINI	MIRROR: power door mirror motors.
18	10 AMINI	ST SIG: starter signal to the engine control system.
19		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
20	7.5 AMINI	AUDIO: audio head unit.
21	7.5 AMINI	M.DEF: heated door mirrors, where fitted.
22	7.5 AMINI	AFS: Adaptive Front-lighting System, on cars with swivelling headlights.
23		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
24	20 AMINI	ENG: engine control system feed taken from the cabin side.
25		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
26		METER2: second instrument cluster position, named from the facelift book but left without a rating.
27		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
28		AUDIO2: second audio position, named from the facelift book but left without a rating.
29		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
30	25 AMINI	P.WIND: second power window feed.
31		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
32	25 AMINI	F.WIPER: front window wiper and washer.
33	25 AMINI	BOSE 2: Bose sound system feed, which the facelift book moves here from position 1.
34		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.

Engine compartment fuse block (MZR engines)

The 2013 Mazda 3 keeps the engine compartment block against the left inner wing, forward of the battery and under a clip-on lid whose underside carries both the plate and the fuse puller. The October 2012 handbook (form 8CV6-EA-12H Edition 2) is the last BL edition, and like the 2012 book it prints two values for six positions because the same housing serves the SKYACTIV-G 2.0 and the MZR engines. What follows is the MZR reading - MZR 2.0, MZR 2.5 and the 2.3 DISI Turbo.

The layout has not changed in four model years. Top left is a blank nameplate; next to it the small blades 32, 33, 34, 35 sit over 36, 37, 38, 39. Three rows run across the middle, each starting with wide cartridges and ending in small blades, and each stepped fractionally to the right of its neighbour above: 1-2-3 with 4-8, 9-10-11 with 12-16, 19-20-21 with 22-25. Relay housings dominate the right-hand third, sharing it with cartridges 17, 18 and 26, blade 27, the trio 29-30-31 and the 80 A bolt-in steering link at 28. Only one row separates this table from the 2012 one, and it is on the SKYACTIV plate rather than this one.

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No.	Amp	Description
1	40 AJCASE	FAN 2: second cooling fan motor on MZR cars, where fitted. The SKYACTIV-G plate calls this socket DCDC and leaves it unrated.
2	40 AJCASE	ENG MAIN: main engine control system feed.
3	50 AJCASE	BTN 1: first battery feed to the cabin junction block.
4	7.5 AMINI	A/C MAG: air conditioner compressor magnetic clutch.
5	20 AMINI	H/L HI: headlight high beam.
6	15 AMINI	FOG: front fog lights, where fitted.
7		H/L WASH: headlight washer position, left unrated on cars for this market.
8	15 AMINI	SUNROOF: moonroof motor, where fitted.
9		F.DEF RH: right-hand heated windscreen element on MZR cars, left unrated. The SKYACTIV-G plate uses this socket for the 40 A HEATER feed.
10		F.DEF LH: left-hand heated windscreen element on MZR cars, left unrated. The SKYACTIV-G plate uses this socket for the 20 A EVVT feed.
11	40 AJCASE	FAN 1: cooling fan motor, where fitted.
12	15 AMINI	ROOM: overhead lights. Called interior lights before the facelift.
13	15 AMINI	TCM: transaxle control system, on automatic cars.
14	20 AMINI	DSC: Dynamic Stability Control, where fitted.
15	7.5 AMINI	BTN 2: second battery feed to the cabin junction block.
16		AT PUMP: automatic transaxle pump position, left unrated in this book.
17	40 AJCASE	HEATER: air conditioner blower on MZR cars. The SKYACTIV-G plate calls this socket PTC and leaves it unrated.
18	30 AJCASE	INJ: engine control system injector feed, where fitted.
19	30 AJCASE	R.DEF: rear window defroster.
20	40 AJCASE	IGKEY 2: second ignition switch feed.
21	40 AJCASE	IGKEY 1: first ignition switch feed.
22	15 AMINI	HORN: horn.
23	15 AMINI	STOP: brake lights.
24	10 AMINI	ENG+B: permanent battery feed to the engine control system.
25	25 AMINI	FUEL PUMP: fuel pump.
26	40 AJCASE	ABS: anti-lock braking system.
27	20 AMINI	SEAT WARM: heated front seats, where fitted.
28	80 AJCASE	EHPAS: power assist steering pump. A bolt-in 80 A link, not a pull-out fuse.
29		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
30	7.5 AMINI	ABS IG: anti-lock braking system ignition feed.
31	7.5 AMINI	SWS: air bag system.
32	15 AMINI	H/L LO RH: right-hand headlight low beam.
33	15 AMINI	H/L LO LH: left-hand headlight low beam.
34	7.5 AMINI	ILLUM: instrument panel illumination. Called dashboard illumination before the facelift.
35	15 AMINI	TAIL: taillights, parking lights and the licence plate lights.
36	15 AMINI	ENG INJ: engine control system injector feed.
37	15 AMINI	ENG BAR: engine control system. Listed as PCM before the facelift.
38	20 AMINI	ENG BAR 2: second powertrain feed on MZR cars. The SKYACTIV-G plate rates this socket 15 A for its own injector feed.
39	15 AMINI	ETV: electric throttle valve on MZR cars. The SKYACTIV-G plate calls this socket EHPAS IG and leaves it unrated.

Engine compartment fuse block (SKYACTIV-G 2.0)

This is the last BL model year's engine compartment block as a SKYACTIV-G 2.0 car is wired. The housing is where it always was, standing against the left-hand inner wing in front of the battery with its plate moulded into the clip-on lid, but the October 2012 handbook (form 8CV6-EA-12H Edition 2) again splits six rows between the SKYACTIV-G engine and the MZR family, so the 2.0 SKYACTIV gets its own reading of the plate.

Socket for socket the drawing matches the MZR one - nameplate top left, blades 32-35 over 36-39, three stepped rows pairing cartridges 1-2-3, 9-10-11 and 19-20-21 with blades 4-8, 12-16 and 22-25, and a relay-heavy right-hand side holding cartridges 17, 18, 26, blade 27, the short row 29-30-31 and the bolt-in 80 A steering link 28. The six footnoted rows read DCDC (no rating) at 1, HEATER 40 A at 9, EVVT 20 A at 10, PTC (no rating) at 17, ENG INJ2 15 A at 38 and EHPAS IG (no rating) at 39. Position 38 is the one row in which this book differs from the 2012 one: it was printed ENG INJ a year earlier and is ENG INJ2 here.

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No.	Amp	Description
1		DCDC: DC-DC converter position on SKYACTIV-G cars, printed without a rating. On MZR cars the same socket is the 40 A FAN 2 feed.
2	40 AJCASE	ENG MAIN: main engine control system feed.
3	50 AJCASE	BTN 1: first battery feed to the cabin junction block.
4	7.5 AMINI	A/C MAG: air conditioner compressor magnetic clutch.
5	20 AMINI	H/L HI: headlight high beam.
6	15 AMINI	FOG: front fog lights, where fitted.
7		H/L WASH: headlight washer position, left unrated on cars for this market.
8	15 AMINI	SUNROOF: moonroof motor, where fitted.
9	40 AJCASE	HEATER: air conditioner blower on SKYACTIV-G cars. On MZR cars this socket is the unrated F.DEF RH heated-windscreen position.
10	20 AJCASE	EVVT: electric variable valve timing feed on SKYACTIV-G cars. On MZR cars this socket is the unrated F.DEF LH position.
11	40 AJCASE	FAN 1: cooling fan motor, where fitted.
12	15 AMINI	ROOM: overhead lights. Called interior lights before the facelift.
13	15 AMINI	TCM: transaxle control system, on automatic cars.
14	20 AMINI	DSC: Dynamic Stability Control, where fitted.
15	7.5 AMINI	BTN 2: second battery feed to the cabin junction block.
16		AT PUMP: automatic transaxle pump position, left unrated in this book.
17		PTC: positive temperature coefficient heater position on SKYACTIV-G cars, printed without a rating. On MZR cars this socket carries the 40 A HEATER feed.
18	30 AJCASE	INJ: engine control system injector feed, where fitted.
19	30 AJCASE	R.DEF: rear window defroster.
20	40 AJCASE	IGKEY 2: second ignition switch feed.
21	40 AJCASE	IGKEY 1: first ignition switch feed.
22	15 AMINI	HORN: horn.
23	15 AMINI	STOP: brake lights.
24	10 AMINI	ENG+B: permanent battery feed to the engine control system.
25	25 AMINI	FUEL PUMP: fuel pump.
26	40 AJCASE	ABS: anti-lock braking system.
27	20 AMINI	SEAT WARM: heated front seats, where fitted.
28	80 AJCASE	EHPAS: power assist steering pump. A bolt-in 80 A link, not a pull-out fuse.
29		Position drawn on the plate but left empty: the handbook prints no name and no rating for it.
30	7.5 AMINI	ABS IG: anti-lock braking system ignition feed.
31	7.5 AMINI	SWS: air bag system.
32	15 AMINI	H/L LO RH: right-hand headlight low beam.
33	15 AMINI	H/L LO LH: left-hand headlight low beam.
34	7.5 AMINI	ILLUM: instrument panel illumination. Called dashboard illumination before the facelift.
35	15 AMINI	TAIL: taillights, parking lights and the licence plate lights.
36	15 AMINI	ENG INJ: engine control system injector feed.
37	15 AMINI	ENG BAR: engine control system. Listed as PCM before the facelift.
38	15 AMINI	ENG INJ2: second injector feed on SKYACTIV-G cars. The 2012 book prints this row as ENG INJ; on MZR cars the socket is the 20 A ENG BAR 2 feed.
39		EHPAS IG: power steering ignition feed on SKYACTIV-G cars, printed without a rating. On MZR cars this socket is the 15 A ETV position.