Mazda B-Series (2003) – fuse and relay box
Diagrams of fuse boxes and relays – Mazda B-Series
Applies to vehicles manufactured in the years:
2003.
Fuse panel in the passenger compartment
The fuse panel is located on the left side of the instrument panel opposite the driver’s side door.
| Number | Amperes [A] | Description |
| 1 | 5 | Mirror power switch |
| 2 | 10 | Daytime Running Lamps (DRL), Reversing Lamps, Transmission, Passenger Airbag Switch, Blower Motor Relay |
| 3 | 7.5 | Left trailer towing connector with stop / turn function |
| 4 | – | Not used |
| 5 | 15 | 4 × 4 control module |
| 6 | 2 | Brake pressure switch |
| 7 | 7.5 | Right coupling for towing a stop / turn trailer |
| 8 | – | Not used |
| 9 | 7.5 | Brake pedal position switch |
| 10 | 7.5 | Speed Control Servo / Amplifier Assembly, General Electronic Module (GEM), Shift Lock Actuator, Turn Signals, 4×4 |
| 11 | 7.5 | Instrument Cluster, 4×4, Master Light Switch, Central Safety Module (CSM), General Electronic Module (GEM) |
| 12 | – | Not used |
| 13 | twenty | Brake pedal position switch |
| 14 | 10 | Anti-lock braking system (ABS) control module |
| 15 | – | Not used |
| 16 | thirty | Windshield Wiper Motor, HI / LO Wiper Relay, Wiper Run / Park Relay |
| 17 | twenty | Cigar Lighter, Data Link Connector (DLC) |
| 18 | – | Not used |
| 19 | 25 | Powertrain control module (PCM) power diode, ignition, PATS (passive anti-theft system) |
| 20 | 7.5 | Generic Electronic Module (GEM), Radio |
| 21 | 15 | Warning signal |
| 22 | twenty | Extra power socket |
| 23 | – | Not used |
| 24 | 7.5 | Clutch Pedal Position (CPP) switch, Starter Interrupt Relay |
| 25 | – | Not used |
| 26 | 10 | Battery Saver Relay, Auxiliary Relay Box, Central Limiting Module (RCM), General Electrical Module (GEM), Instrument Cluster |
| 27 | – | Not used |
| 28 | 7.5 | Generic Electronic Module (GEM), Radio |
| 29 | twenty | Radio |
| 30 | – | Not used |
| 31 | – | Not used |
| 32 | – | Not used |
| 33 | 15 | Headlamps, Daytime Running Lamp (DRL) Module, Instrument Cluster |
| 34 | – | Not used |
| 35 | 15 | Horn relay (if not equipped with central safety module) |
| 36 | – | Not used |
Power distribution box
The power distribution box is located in the engine compartment.
2.3L engine (if equipped)
| Number | Amperes [A] | Description |
| 1 | 50 ** | I / P fuse panel |
| 2 | – | Not used |
| 3 | – | Not used |
| 4 | – | Not used |
| 5 | – | Not used |
| 6 | 50 ** | Anti-lock Braking System (ABS) Pump Motor |
| 7 | thirty* | Powertrain control module (PCM) |
| 8 | twenty* | Central security module, door locks, remote entry |
| 9 | – | Not used |
| 10 | – | Not used |
| 11 | 50 ** | Starter relay, ignition switch |
| 12 | twenty* | Power windows |
| 13 | – | Not used |
| 14 | – | Not used |
| 15 | – | Not used |
| 16 | 40 ** | Blower motor |
| 17 | twenty** | Auxiliary cooling fan |
| 18 | – | Not used |
| 19 | – | Not used |
| 20 | – | Not used |
| 21 | 10 * | PCM memory |
| 22 | – | Not used |
| 23 | twenty* | Fuel pump motor |
| 24 | thirty* | Headlights |
| 25 | 10 * | A / C clutch relay |
| 26 | – | Not used |
| 27 | – | Not used |
| 28 | thirty* | 4WABS module |
| 29 | – | Not used |
| 30 | 15 * | Tow trailer |
| 31 | twenty* | Fog lamp, daytime running lights (DRL) |
| 32 | – | Not used |
| 33 | 15 * | Park lamp, central security module |
| 34 | – | Not used |
| 35 | – | Not used |
| 36 | – | Not used |
| 37 | – | Not used |
| 38 | 10 * | Left low beam headlight |
| 39 | – | Not used |
| 40 | – | Not used |
| 41 | twenty* | Heated oxygen sensors |
| 42 | 10 * | Right low beam headlight |
| 43 | – | (Resistor) |
| 44 | – | Not used |
| 45A | – | Wiper high / low relay |
| 45B | – | Park / wiper relay |
| 46A | – | Fuel pump relay |
| 46B | – | Trailer tow relay |
| 47 | – | Starter relay |
| 48 | – | Auxiliary cooling fan |
| 49 | – | Not used |
| 50 | – | Not used |
| 51 | – | Not used |
| 52 | – | Not used |
| 53 | – | PCM diode |
| 54 | – | PCM relay |
| 56 | – | Blower motor relay |
| 56A | – | A / C clutch relay |
| 56B | – | Front washer pump relay |
| * Mini fuses ** Maxi fuses | ||
3.0L and 4.0L engines (if equipped)
| Number | Amperes [A] | Description |
| 1 | 50 ** | I / P fuse panel |
| 2 | – | Not used |
| 3 | – | Not used |
| 4 | – | Not used |
| 5 | – | Not used |
| 6 | 50 ** | Anti-lock Braking System (ABS) Pump Motor |
| 7 | thirty* | Powertrain control module (PCM) |
| 8 | twenty* | Electric door locks, remote entry |
| 9 | – | Not used |
| 10 | – | Not used |
| 11 | 50 ** | Starter relay, ignition switch |
| 12 | twenty* | Power windows |
| 13 | twenty* | 4 × 4 engine |
| 14 | – | Not used |
| 15 | – | Not used |
| 16 | 40 ** | Blower motor |
| 17 | – | Not used |
| 18 | – | Not used |
| 19 | – | Not used |
| 20 | – | Not used |
| 21 | 10 * | Powertrain control module (PCM) memory |
| 22 | – | Not used |
| 23 | twenty* | Fuel pump motor |
| 24 | thirty* | Headlights |
| 25 | 10 * | A / C clutch relay |
| 26 | – | Not used |
| 27 | – | Not used |
| 28 | thirty* | Anti-lock brake system (ABS) module |
| 29 | – | Not used |
| 30 | 15 * | Tow trailer |
| 31 | twenty* | Fog lamp, daytime running lights (DRL) |
| 32 | – | Not used |
| 33 | 15 * | Park lamp |
| 34 | – | Not used |
| 35 | – | Not used |
| 36 | – | Not used |
| 37 | – | Not used |
| 38 | 10 * | Left low beam headlight |
| 39 | – | Not used |
| 40 | – | Not used |
| 41 | twenty* | Heated oxygen sensors |
| 42 | 10 * | Right low beam headlight |
| 43 | – | Not used |
| 44 | – | Not used |
| 45A | – | Wiper high / low relay |
| 45B | – | Park / wiper relay |
| 46A | – | Fuel pump relay |
| 46B | – | Trailer tow relay |
| 47A | – | A / C clutch solenoid relay |
| 47B | – | Front washer pump relay |
| 48A | – | Fog lights |
| 48B | – | Fog lamp relay |
| 51 | – | Not used |
| 52 | – | Not used |
| 53 | – | Powertrain control module (PCM) LED |
| 54 | – | Powertrain control module (PCM) |
| 55 | – | Blower relay |
| 56 | – | Starter relay |
| * Mini fuses ** Maxi fuses | ||