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Fuse box diagram (fuse layout), location, and assignment of fuses Mazda 3 (BK) (2003, 2004, 2005, 2006, 2007, 2008).
Checking and Replacing Fuses
Your vehicle’s electrical system is protected from overloading by fuses. If any lights, accessories, or controls in the vehicle don’t work, inspect the appropriate circuit protector. If a fuse has blown, the inside element will be melted.
In case if you have no spare fuses, borrow one of the same rating from a circuit not essential to vehicle operation, such as the MIRROR or CIGAR circuit.
If the same fuse blows again, avoid using that system and consult an Authorized Mazda Dealer as soon as possible.
Notice
- Always switch off the ignition system and the affected electrical circuit before replacing a fuse.
- Always disconnect the battery before servicing high current fuses.
- Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse, even as a temporary fix. This can cause extensive damage or even fire.
Passenger Compartment Fuse Box
If the electrical system does not work, first inspect the fuses on the front passenger’s side below the glove box.
- Turn off the ignition switch and other switches.
- Remove the cover.
- Turn the knobs counterclockwise and lower the fuse block.
- Locate the position of the suspected fuse by using the chart inside the fuse block cover.
- Pull the fuse straight out with the fuse puller provided on the inside of the engine compartment fuse block cover.
- Inspect the fuse and replace it if it’s blown.
- Insert a new fuse of the same amperage rating, and make sure it fits tightly.
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| № | Fuse | 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 beam (LH) |
| 40 | HEAD HIGH R | 10 | Headlight high beam (RII) |
| 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 light (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 | Windshield wiper and washer |
| 54 | — | — | — |
| 55 | P/WIND R | — | — |
| 56 | P/WIND L | — | — |
| 57 | ALARM | — | — |
| 58 | M/DEF | 7.5 | Mirror Defroster* |
| 59 | — | — | — |
| 60 | HEAD LOW R | 15 | Headlight low beam (RH), Headlight leveling |
| 61 | HEAD LOW L | 15 | Headlight low beam (LI I) |
| 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 | TAILL | 7.5 | Taillight (LH), Parking light (LH) |
| 82 | ILLUMI | 7.5 | Illumination |
| 83 | — | — | — |
| 84 | — | — | — |
| 85 | — | — | — |
| 86 | — | — | — |
| * Some models | |||
Engine Compartment Fuse Box
If the headlights or other electrical components do not work and the fuses in the cabin are normal, inspect the fuse block under the hood. If a fuse is blown, it must be replaced.
Follow these steps:
- Turn off the ignition switch and all other switches.
- Remove the fuse block cover.
- If any fuse but the MAIN fuse is blown, replace it with a new one of the same amperage rating.
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| № | Fuse | A | Protected component |
|---|---|---|---|
| 1 | FAN | 40 70** | Cooling fan |
| 2 | P/ST | 80 | Power steering |
| 3 | BTN | 40 | For protection of various circuits |
| 4 | HEAD | 40 | Headlights |
| 5 | PTC | — | — |
| 5** | F/PUMP | 30 | Fuel pump |
| 6 | GLOW | — | — |
| 7 | ABS 1 | 30 | ABS*, DSC* |
| 8 | ABS 2 | 20 | ABS*, DSC* |
| 9 | ENGINE | 30 | For protection of various circuits |
| 10 | — | — | — |
| 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 | GLOW 1 | — | — |
| 15 | HEATER | 40 | Blower motor |
| 16 | GLOW 2 | — | — |
| 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 | — | — |
| 24 | F/PUMP | 15 | Fuel pump |
| 24** | ETC | 10 | Elec, throttle valve |
| 25 | P/ST IG | 10 | Power steering |
| 26 | A/CMAG | 10 | Air conditioner* |
| 27 | ALT/TCM | 10/15 | TCM* |
| 28 | GLOW S1G | — | — |
| 29 | P.OUTLET | 15 | Power outlet |
| 30 | ENG +B | 10 | PCM |
| 31 | ROOM | 15 | Interior lights |
| 32 | ENG BAR 4 | 10 | 02 sensors * |
| 33 | ENG BAR 3 | 10 | 02 sensors |
| 34 | EGIINJ | 10 | Injector |
| 35 | ENG BAR 1 | 10 15** | For protection of various circuits |
| 36 | ENG BAR 2 | 10 | PCM, Fuel pump |
| * Some models; ** With turbocharger | |||
Main Fuse
Do not replace the main fuse by yourself. Have an Authorized Mazda Dealer perform the replacement: Replacing the fuse by yourself is dangerous because the MAIN fuse is a high current fuse. Incorrect replacement could cause an electrical shock or a short circuit resulting in a fire.
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