Mazda B-Series 2008 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located under the right-hand side of the instrument panel behind the kick panel.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 5A | Instrument panel dimmer switch |
| 2 | 10A | Trailer tow park lamps |
| 3 | 10A | Right low beam headlamp |
| 4 | 10A | Left low beam headlamp |
| 5 | 5A | Windshield wiper module (RUN/ACCY) |
| 6 | 10A | Radio (RUN/ACCY), Door switch illumination |
| 7 | 5A | Not used (spare) |
| 8 | 10A | Restraints Control Module (RCM), PADI (Passenger Air bag Deactivation Indicator), Occupant Classification Sensor (OCS) |
| 9 | 5A | Cluster air bag indicator |
| 10 | 10A | Cluster (RUN/START), 4x4 module (RUN/START) |
| 11 | 10A | Smart Junction Box (SJB) (Logic power) |
| 12 | 15A | Audiophile subwoofer amplifier, Satellite radio |
| 13 | 15A | Horn, Interior lamps |
| 14 | 15A | High beam headlamp, High beam indicator (cluster) |
| 15 | - | Not used |
| 16 | 30A cartridge fuse |
Power windows |
| 17 | 15A | Turn signals/Hazards |
| 18 | - | Not Used |
| 19 | 20A | Center High-Mounted Stop Lamp (CHMSL)/Stop lamps |
| 20 | 10A | Anti-lock Brake System (ABS) module, Speed control module, Back-up lamps, Overdrive cancel switch, Electronic flasher (turn/hazard) |
| 21 | 5A | Starter relay coil |
| 22 | 5A | Radio (START) |
| 23 | 30A | Headlamps (low and high beam) |
| 24 | 20A | Radio battery feed (B+) |
| 25 | - | Accessory relay (power windows) |
| 26 | 2A | Redundant cruise switch |
| 27 | 10A | Climate control blower relay/blend doors |
| 28 | 15A | 4x4 module battery feed (B+) |
| 29 | 20A | Cigar lighter, Diagnostic connector (OBD II) |
| 30 | 5A | Power mirrors |
| 31 | 20A | Front park lamps, Rear park lamps, License plate lamps, Dimmer switch, Trailer tow park lamps |
| 32 | 5A | Brake switch (logic), Brake-shift interlock |
| 33 | 5A | Instrument cluster battery feed (B+) |
| 34 | 20A | Power point |
| 35 | 15A | Power locks |
Engine compartment fuse box (2.3L engine):
| Fuse/Relay N° | Rating | Functions |
| 1 | 50A | Passenger compartment fuse panel |
| 2 | - | Not Used |
| 3 | 50A | Passenger compartment fuse panel |
| 4 | - | Not Used |
| 5 | 50A | Passenger compartment fuse panel |
| 6 | - | Not used |
| 7 | 40A | Starter solenoid |
| 8 | - | Not used |
| 9 | 40A | Ignition switch |
| 10 | - | Not Used |
| 11 | 30A | Powertrain Control Module (PCM) relay |
| 12 | - | Not used |
| 13 | 30A | Blower motor (climate control) |
| 14 | - | Not Used |
| 15 | - | Not used |
| 16 | - | Not used |
| 17 | 40A | Anti-lock Brake System (ABS) module |
| 18 | - | Not Used |
| 19 | 20A | Engine fan |
| 20 | - | Not Used |
| 21 | 10A | PCM keep alive power, Canister purge valve solenoid |
| 22 | - | Not Used |
| 23 | 30A | Fuel pump motor, Fuel injectors |
| 24 | - | Not used |
| 25 | 10A | A/C clutch solenoid |
| 26 | - | Not Used |
| 27 | - | Not Used |
| 28 | - | Not used |
| 29 | 30A | Wipers/washer |
| 30 | - | Not used |
| 31 | - | Not used |
| 32 | - | Not Used |
| 33 | 30A | Anti-lock Brake System (ABS) module |
| 34 | - | Not Used |
| 35 | - | Not Used |
| 36 | - | Not Used |
| 37 | - | Not Used |
| 38 | 7.5A | Trailer tow (right turn) |
| 39 | 15A | PCM power |
| 40 | - | Not Used |
| 41 | 10A | Automatic transmission |
| 42 | 7.5A | Trailer tow (left turn) |
| 43 | 20A | Engine fan relay coil, A/C relay, Engine sensors, VMV solenoid |
| 44 | 15A | Ignition coil, Capacitor |
| 45A | - | Not used |
| 45B | - | Not used |
| 46A | - | Fuel pump relay, Fuel injectors relay |
| 46B | - | Not used |
| 47 | - | Engine fan relay |
| 48 | - | Starter relay |
| 49 | - | Not Used |
| 50 | - | Not Used |
| 51 | - | Not Used |
| 52 | - | Not Used |
| 53 | - | Not used |
| 54 | - | PCM Relay |
| 55 | - | Blower Relay |
| 56A | - | A/C clutch solenoid relay |
| 56B | - | Not used |
Engine compartment fuse box (3.0L and 4.0L engines):
| Fuse/Relay N° | Rating | Functions |
| 1 | 40A | Passenger compartment fuse panel |
| 2 | - | Not Used |
| 3 | 40A | Passenger compartment fuse panel |
| 4 | - | Not Used |
| 5 | 50A | Passenger compartment fuse panel |
| 6 | - | Not used |
| 7 | 30A | Starter solenoid |
| 8 | - | Not used |
| 9 | 40A | Ignition switch |
| 10 | - | Not Used |
| 11 | 30A | Powertrain Control Module (PCM) relay fuse |
| 12 | - | Not used |
| 13 | 30A | Blower motor (climate control) |
| 14 | - | Not Used |
| 15 | - | Not used |
| 16 | - | Not used |
| 17 | 40A | Anti-lock Brake System (ABS) module |
| 18 | - | Not Used |
| 19 | - | Not Used |
| 20 | - | Not Used |
| 21 | 10A | PCM keep alive power, Canister purge valve solenoid |
| 22 | - | Not Used |
| 23 | 30A | Fuel pump motor, Fuel injectors |
| 24 | - | Not used |
| 25 | 10A | A/C clutch solenoid |
| 26 | - | Not Used |
| 27 | 20A | 4x4 module |
| 28 | - | Not used |
| 29 | 30A | Wipers/washer |
| 30 | - | Not used |
| 31 | 15A | Foglamps |
| 32 | - | Not Used |
| 33 | 30A | Anti-lock Brake System (ABS) module |
| 34 | - | Not Used |
| 35 | - | Not Used |
| 36 | - | Not Used |
| 37 | - | Not Used |
| 38 | 7.5A | Trailer tow (right turn) |
| 39 | 15A | PCM power |
| 40 | - | Not Used |
| 41 | 10A | Automatic transmission |
| 42 | 7.5A | Trailer tow (left turn) |
| 43 | 20A | A/C relay coil, Engine sensors, VMV solenoid, EGR solenoid, Heated PCV |
| 44 | 15A | Ignition coil, Capacitor |
| 45A | - | Not used |
| 45B | - | Not used |
| 46A | - | A/C clutch solenoid |
| 46B | - | Not used |
| 47 | - | PCM relay |
| 48A | - | Fuel pump relay, Fuel injectors relay |
| 48B | - | Fog Lamp Relay |
| 51 | - | Not Used |
| 52 | - | Not Used |
| 53 | - | Not used |
| 54 | - | Not used |
| 55 | - | Blower Relay |
| 56 | - | Starter Relay |
