Mazda CX-9 (2021) – fuse and relay box
Diagrams of fuse boxes and relays – Mazda CX-9
Applies to vehicles manufactured in the years:
2021.
Fuse block (Engine compartment)
| Number | Ampres [A] | Description |
| 1 | 20 A | Windshield wiper de-icer (Some Models) |
| 2 | 30 A | For protection of various circuits |
| 3 | 30 A | Engine control system |
| 4 | ― | ― |
| 5 | 30 A | ― |
| 6 | 30 A | Power seat (Some Models) |
| 7 | ― | ― |
| 8 | 20 A | Engine control system |
| 9 | 40 A | Rear window defogger |
| 10 | 20 A | Heated steering wheel (Some Models) |
| 11 | 40 A | Air conditioner |
| 12 | 20 A | Electric Parking Brake (EPB) (LH) |
| 13 | 40 A | Audio system |
| 14 | 20 A | Electric Parking Brake (EPB) (RH) |
| 15 | 40 A | Engine control system |
| 16 | 50 A | ABS, Dynamic stability control system |
| 17 | 50 A | For protection of various circuits |
| 18 | 20 A | Front window wiper and washer |
| 19 | 40 A | Air conditioner |
| 20 | ― | ― |
| 21 | 7.5 A | Engine control system |
| 22 | 15 A | For protection of various circuits |
| 23 | 15 A | Headlight low beam (LH) |
| 24 | 15 A | ― |
| 25 | 15 A | Engine control system |
| 26 | 15 A | Engine control system |
| 27 | 15 A | Engine control system |
| 28 | 15 A | Transaxle control system, Ignition switch |
| 29 | 20 A | ― |
| 30 | 7.5 A | Air conditioner |
| 31 | 15 A | ― |
| 32 | 10 A | Brake lights |
| 33 | 15 A | Rear window wiper, Theft-deterrent system (Some Models) |
| 34 | 20 A | Headlight high beam |
| 35 | 15 A | Headlight low beam (RH) |
| 36 | 15 A | Fog lights (Some Models) |
| 37 | 7.5 A | Engine control system |
| 38 | 7.5 A | Audio system (Some Models) |
| 39 | 10 A | For protection of various circuits |
| 40 | 15 A | ― |
| 41 | 10 A | Instrument cluster |
| 42 | 7.5 A | Air bag |
| 43 | 10 A | Audio system (Some Models) |
| 44 | 25 A | Audio system |
| 45 | 30 A | ABS, Dynamic stability control system |
| 46 | 15 A | Gateway system |
| 47 | 15 A | Audio system |
| 48 | 15 A | Parking lights |
| 49 | 25 A | Fuel system |
| 50 | 25 A | Hazard warning flashers, Turn signal lights, Taillights |
| 51 | 15 A | Daytime running lights |
| 52 | 15 A | Accessory sockets (Some Models) |
| 53 | 15 A | Horn |
| 54 | 25 A | For protection of various circuits |
Fuse block in passenger compartment (Left side)
| Number | Amperes [A] | Description |
| 1 | 30 A | Power seat (Some Models) |
| 2 | 30 A | Power windows |
| 3 | 15 A | Accessory sockets |
| 4 | 25 A | Power windows |
| 5 | 20 A | Power liftgate (Some Models) |
| 6 | 25 A | Power door locks |
| 7 | 20 A | Seat warmer (Some Models) |
| 8 | 15 A | Trailer hitch (Some Models) |
| 9 | 10 A | Moonroof (Some Models) |
| 10 | 15 A | Audio system |
| 11 | 7.5 A | Engine control system |
| 12 | 7.5 A | Power control mirror |
| 13 | 7.5 A | AT shift indicator |
| 14 | 15 A | Accessory sockets |
| 15 | 15 A | Accessory sockets (Some Models) |
| 16 | 15 A | USB power outlet (Some Models) |
| 17 | 7.5 A | Mirror defogger (Some Models) |
| 18 | 20 A | Seat warmer (Some Models) |
| 19 | 15 A | Audio system |
| 20 | 30 A | Power seat (Some Models) |
| 21 | 30 A | Power seat (Some Models) |
