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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mazda CX-9 (2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015).
Checking and Replacing Fuses
Your vehicle’s electrical system is protected by fuses. If any lights, accessories, or controls don’t work, inspect the appropriate circuit protector. If a fuse has blown, the inside element will be melted.
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.
- Always replace a fuse with one of the same rating. Otherwise you may damage the electric system.
Passenger 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:
- Make sure the ignition is switched off, and other switches are off.
- Remove the fuse block cover or the relay box cover.
- If any fuse but the MAIN fuse is blown, replace it with a new one of the same amperage rating.
- Reinstall the cover and make sure that it is securely installed.
Fuse Box Diagram
| № | A | Protected Component |
|---|---|---|
| 1 | 15 | Accessory socket (front) |
| 2 | 7.5 | Power control mirror |
| 3 | 15 | 2013-2015: Wiper/washer, headlights system |
| 4 | 10 | Instrument cluster |
| 5 | 7.5 | ABS, Air bag |
| 6 | 7.5 | Engine control system |
| 7 | 7.5 | Ignition system |
| 8 | - | - |
| 9 | 7.5 | Air conditioner |
| 10 | 15 | Rear window wiper & washer |
| 11 | - | - |
| 12 | 20 | Power lift gate |
| 13 | 15 | Moonroof |
| 14 | 10 | Audio system |
| 15 | 10 | Mirror defroster |
| 16 | 25 | 2011-2015: Power windows (Passenger-side) |
| 17 | 10 | Taillights, Parking lights, License plate lights, Side-marker lights |
| 18 | 10 | Dashboard illumination |
| 19 | 7.5 | Injectors |
| 20 | - | - |
| 21 | - | - |
| 22 | - | - |
| 23 | 30 | Windshield wiper and washer |
| 24 | 30 | Power windows |
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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.
Fuse Box Diagram
| № | A | Protected Component |
|---|---|---|
| 1 | 150 | Main |
| 2 | - | - |
| 3 | 20 | Transaxle control system |
| 4 | 15 | Xenon: Headlight (RH) |
| 15 | 2013-2015: Headlight low beam relay (without auto light system), headlight high beam relay (with auto light system) | |
| 5 | 40 | Heater |
| 6 | 30 | Power seat (RH) |
| 7 | 50 | Heater |
| 8 | 40 | Ignition switch, Starter relay |
| 9 | 30 | Single Fan Control Unit: Cooling fan |
| 40 | Dual Fan Control Unit: Cooling fan | |
| 10 | 40 | Power seat (LH) |
| 11 | 30 | Rear window defroster |
| 12 | 40 | 2007-2010: TNS relay (headlights system, fuse (passenger compartment): "17", "18") Fuse (passenger compartment): "24" |
| 50 | 2011-2015: TNS relay (headlights system, fuse (passenger compartment): "17", "18") Fuse (passenger compartment): "16", "24" | |
| 13 | 30 | Fuel pump |
| 14 | 30 | Ignition switch |
| 15 | 15 | Fog lights |
| 16 | 30 | ABS solenoid |
| 17 | 25 | Power door locks |
| 18 | 15 | Overhead light |
| 19 | 15 | Accessory socket (Center) |
| 20 | 15 | Accessory socket (Rear) |
| 21 | 15 | DC/AC Inverter, Moon roof |
| 22 | 15 | Seat Warmer |
| 23 | 10 | Air conditioner |
| 24 | 25 | Audio system (Bose Sound System) |
| 25 | 30 | Single Fan Control Unit: Cooling fan |
| 40 | Dual Fan Control Unit: Cooling fan | |
| 26 | 50 | ABS |
| 27 | 25 | Ignition system |
| 28 | 15 | Halogen: Headlight left (Low beam) |
| 15 | Xenon: Headlight (LH) | |
| 29 | 15 | Halogen: Headlight right (Low beam) |
| 30 | 20 | Halogen: Headlight (High beam) |
| 31 | 10 | Engine control system |
| 32 | 20 | Engine control system, Air flow sensor, EGR control valve |
| 33 | 7.5 | Engine control system |
| 34 | 15 | Hazard warning flashers |
| 35 | 10 | Engine control system |
| 36 | 15 | Horn |
| 37 | 7.5 | Brake lights |
| R1 | Main №1 | |
| R2 | Fuel pump | |
| R3 | Front blower | |
| R4 | TNS | |
| R5 | Horn | |
| R6 | - | |
| R7 | Main №2 | |
| R8 | Rear window defroster | |
| R9 | Keyless beeper | |
| R10 | A/C | |
| R11 | Rear blower | |
| R12 | 2007-2009: Seat warmer RH | |
| R13 | Headlight high beam | |
| R14 | Headlight low beam | |
| R15 | Starter | |
Additional fuse box
Single Fan Control Unit
| № | A | Protected Component / Relay |
|---|---|---|
| 1 | 7.5 | Injectors |
| 2 | - | - |
| 3 | - | - |
| R1 | Fan | |
| R2 | 2007-2009: Seat warmer LH | |
| R3 | - | |
| R4 | Front fog light | |
Dual Fan Control Unit
| № | Relay |
|---|---|
| 1 | Cooling fan №1 |
| 2 | 2007-2009: Seat warmer LH |
| 3 | Cooling fan №2 |
| 4 | Front fog light |
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