Mazda 3 (2008) – fuse box diagram
Year of production: 2008
Fuse block (Engine compartment)
engine compartment
Without turbocharger
| Position | Description | Fuse rating [A] | Protected component |
| 1 | FAN | 40 | Cooling fan |
| 2 | P/ST | 80 | Power steering |
| 3 | BTN | 40 | For protection of various circuits |
| 4 | HEAD | 40 | Headlights |
| 5 | PTC | 80 | — |
| 6 | GLOW | 60 | — |
| 7 | ABS 1 | 30 | ABS*, DSC* |
| 8 | ABS 2 | 20 | ABS*, DSC* |
| 9 | ENGINE | 30 | For protection of various circuits |
| 10 | — | — | — |
| 11 | IG KEY 1 | 30 | Ignition switch |
| 12 | STARTER | 20 | Starter clutch |
| 13 | IG KEY 2 | 30 | Ignition switch |
| 14 | — | — | — |
| 15 | HEATER | 40 | Blower motor |
| 16 | — | — | — |
| 17 | DEFOG | 40 | Rear window defroster |
| 18 | AUDIO | 30 | Audio system (BOSE Sound System-equipped model) |
| 19 | ABS IG | 10 | ABS*, DSC* |
| 20 | FOG | 15 | Front fog lights* |
| 21 | HORN | 15 | Horn |
| 22 | DRL | 10 | DRL* |
| 23 | H/CLEAN | 20 | — |
| 24 | F/PUMP | 15 | Fuel pump |
| 25 | P/ST IG | 10 | Power steering |
| 26 | A/C MAG | 10 | Air conditioner* |
| 27 | TCM | 10/15 | TCM* |
| 28 | GLOW SIG | — | — |
| 29 | P.OUTLET | — | Power outlet |
| 30 | ENG +B | 10 | PCM |
| 31 | ROOM | 15 | Interior lights |
| 32 | ENG BAR 4 | 10 | O2 sensors* |
| 33 | ENG BAR 3 | 10 | O2 sensors |
| 34 | EGI INJ | 10 | Injector |
| 35 | ENG BAR 1 | 10 | For protection of various circuits |
| 36 | ENG BAR 2 | 10 | PCM, Fuel pump |
| * Some models | |||
With turbocharger
| Position | Description | Fuse rating [A] | Protected component |
| 1 | FAN | 70 | Cooling fan |
| 2 | — | — | — |
| 3 | BTN | 40 | For protection of various circuits |
| 4 | HEAD | 40 | Headlights |
| 5 | F/PUMP | 30 | Fuel pump |
| 6 | — | — | — |
| 7 | ABS 1 | 30 | ABS, DSC |
| 8 | ABS 2 | 20 | ABS, DSC |
| 9 | ENGINE | 30 | For protection of various circuits |
| 10 | INJECTOR | 30 | Fuel injector |
| 11 | IG KEY 1 | 30 | Ignition switch |
| 12 | STARTER | 20 | Starter clutch |
| 13 | IG KEY 2 | 30 | Ignition switch |
| 14 | — | — | — |
| 15 | HEATER | 40 | Blower motor |
| 16 | — | — | — |
| 17 | DEFOG | 40 | Rear window defroster |
| 18 | AUDIO | 30 | Audio system (BOSE Sound System-equipped model) |
| 19 | ABS IG | 10 | ABS |
| 20 | FOG | 15 | Front fog lights |
| 21 | HORN | 15 | Horn |
| 22 | DRL | 10 | DRL* |
| 23 | H/CLEAN | 20 | — |
| 24 | ETC | 15 | Elec. throttle valve |
| 25 | — | — | — |
| 26 | A/C MAG | 10 | Air conditioner |
| 27 | — | — | — |
| 28 | — | — | — |
| 29 | P.OUTLET | 15 | Power outlet |
| 30 | ENG +B | 10 | PCM |
| 31 | ROOM | 15 | Interior lights |
| 32 | — | — | — |
| 33 | ENG BAR 3 | 10 | O2 sensors |
| 34 | — | — | — |
| 35 | ENG BAR 1 | 15 | For protection of various circuits |
| 36 | ENG BAR 2 | 10 | PCM, Fuel pump |
| * Some models | |||
Fuse block (Passenger’s side)
passenger compartment
| Position | Description | Fuse rating [A] | Protected component |
| 37 | D/LOCK 2 | 15 | Double locking system* |
| 38 | STOP LAMP/HORN | 10 | Stop Lamp, Horn |
| 39 | HEAD HIGH L | 10 | Headlight high beams (LH) |
| 40 | HEAD HIGH R | 10 | Headlight high beams (RH) |
| 41 | — | — | — |
| 42 | — | — | — |
| 43 | CIGAR | 15 | Lighter |
| 44 | RADIO | 7,5 | Audio system |
| 45 | MIRROR | 10 | Power control mirror* |
| 46 | TAIL R | 7,5 | Taillight (RH), Parking lights (RH) License plate lights |
| 47 | OBD | 10 | For protection of various circuits |
| 48 | — | — | — |
| 49 | TR/LOCK | — | — |
| 50 | — | — | — |
| 51 | — | — | — |
| 52 | SUN ROOF | 20 | Moonroof* |
| 53 | WASHER | 20 | Front washer, Rear window wiper and washer |
| 54 | — | — | — |
| 55 | P/WIND R | — | — |
| 56 | P/WIND L | — | — |
| 57 | ALARM | 7,5 | — |
| 58 | M/DEF | 7,5 | Mirror Defroster* |
| 59 | — | — | — |
| 60 | HEAD LOW R | 15 | Headlight low beams (RH), Headlight leveling* |
| 61 | HEAD LOW L | 15 | Headlight low beams (LH) |
| 62 | — | — | — |
| 63 | — | — | — |
| 64 | — | — | — |
| 65 | SAS | 10 | Supplemental restraint system |
| 66 | METER | 10 | Instrument cluster, immobilizer system |
| 67 | IGNITION | 20 | ABS*, DSC*, Power steering |
| 68 | WIPER | 20 | Windshield wiper and washer |
| 69 | ENGINE | 20 | For protection of various circuits |
| 70 | IG SIG | 10 | Auto wiper*, Power window switch* |
| 71 | SAS 2 | 7,5 | Seat weight sensor |
| 72 | — | — | — |
| 73 | — | — | — |
| 74 | SEAT WARM | 20 | Seat warmer* |
| 75 | D/LOCK 1 | 25 | Power door lock* |
| 76 | A/C | 10 | Air conditioner *, Heater control unit |
| 77 | P/WIND L | 30 | Power window (LH)* |
| 78 | P/WIND R | 30 | Power window (RH)* |
| 79 | BACK | 10 | Reverse lights |
| 80 | SUN ROOF | 7,5 | Moonroof* |
| 81 | TAIL L | 7,5 | Taillights (LH), Parking lights (LH) |
| 82 | ILLUMI | 7,5 | Illumination |
| 83 | — | — | — |
| 84 | — | — | — |
| 85 | — | — | — |
| 86 | — | — | — |
| * Some models | |||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.