The Mazda CX-7 is the production version of the MX-Crossport concept. Production began in spring 2006 at the assembly plant in Hiroshima, Japan. In 2009, the vehicle received a facelift. This guide provides detailed fuse and relay box diagrams for the Mazda CX-7 (ER chassis) for model years 2006, 2007, 2008, 2009, 2010, 2011, and 2012.
Below are the locations and photographs of the power distribution centers. Fuses for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
Engine Compartment
The engine compartment houses a main fuse box near the battery and an auxiliary relay box.
Main Fuse Box
Lift the plastic cover to gain access to the unit.
Photo provided for reference.
| Diagram (Version 1) | |
|---|---|
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|
| No. / Rating | Description |
| Fuses | |
| 1 (10 A) | Turn signals and hazard lights |
| 2 (25 A) | Engine management system |
| 3 (20 A) | Horns |
| 4 (10 A) | Brake lights |
| 5 (20 A) | Power windows |
| 6 (15 A) | Mass Air Flow (MAF) sensor, Exhaust Gas Recirculation (EGR) valve |
| 7 (10 A) | Engine management system |
| 8 (7.5 A) | Engine Control Module (ECM) |
| 9 (15 A) | Headlight washers |
| 10 (15 A) | High-beam headlights |
| 11 (20 A) | Accelerator pedal position sensor / Electronic throttle control |
| 12 (10 A) | Air conditioning (A/C) system |
| 13 (15 A) | Parking lights (TNS), license plate illumination |
| 14 (15 A) | Low-beam headlight (left) |
| 15 (15 A) | Low-beam headlight (right) |
| 16 (30 A) | Rear window defroster |
| 17 (20 A) | Front fog lights |
| 18 (30 A) | Fuel pump fuse |
| 19 (30 A) | Power windows |
| 20 (20 A) | Central locking system |
| 21 (30 A) | Engine management system |
| 22 (30 A) | Audio system |
| 23 (20 A) | Power sunroof |
| 24 (30 A) | Fuel injectors |
| 25 (40 A) | Power seat adjustment |
| Relays | |
| R1 | Fuel injection system (Injector relay) |
| R2 | Fuel pump relay |
| R3 | Primary (left) radiator cooling fan |
| R4 | Blower fan motor |
| R5 | Secondary (right) radiator cooling fan |
| R6 | Starter relay |
| R7 | Fuel pump circuit relay |
| R8 | Main relay |
| R9 | Starter relay #2 |
| R10 | Backup (reverse) lights |
| R11 | Headlights |
| R12 | Electronic throttle control |
| R13 | Parking lights, license plate lights (TNS relay) |
| R14 | Rear window defroster |
High-current power fuses are located inside the distribution box under a separate cover.
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| Diagram (Version 2) | ||
|---|---|---|
|
||
| No. | Description | Rating (A) |
| 1 | Ignition system | 40 |
| 2 | Blower fan motor | 40 |
| 3 | Main power circuit protection | 60 |
| 4 | Radiator fan motor | 40 |
| 5 | Ignition system | 40 |
| 6 | Radiator fan motor | 40 |
| 7 | Power seats | 40 |
| 8 | Fuel injection system | 30 |
| 9 | Power sunroof | 20 |
| 10 | Bose audio system | 30 |
| 11 | ENGINE – Engine management system | 30 |
| 12 | D.LOCK – Power door locks | 20 |
| 13 | P.WIND – Power windows | 30 |
| 14 | Fuel pump fuse | 30 |
| 14 | IG KEY2 – Ignition system | 40 |
| 15 | ABS1 – Anti-lock Brake System (ABS) | 40 |
| 16 | ABS2 – Anti-lock Brake System (ABS) | 20 |
| 17 | DSC – Dynamic Stability Control system | 7.5 |
| 18 | FOG – Front fog lights | 20 |
| 19 | DEF – Rear window defroster | 30 |
| 20 | TNS – Parking lights, license plate lights, illuminated entry system | 15 |
| 21 | A/C – Air conditioning system | 10 |
| 22 | ETC – Electronic throttle control | 20 |
| 23 | H/LH1 – Headlight leveling system | 15 |
| 24 | DRL – Daytime running lights | 15 |
| 25 | H/L LO LH – Low-beam headlight (right) | 15 |
| 26 | H/L LO LH – Low-beam headlight (left) | 15 |
| 27 | ENG BAR 2 – Powertrain Control Module (PCM) | 7.5 |
| 28 | ECM – Engine Control Module | 10 |
| 29 | ENG BAR 1 – Mass Air Flow (MAF) sensor, EGR valve | 15 |
| 30 | RWIND2 – Power windows | 20 |
| 31 | STOP – Brake lights | 10 |
| 32 | HORN – Horn | 20 |
| 33 | ENGB+ – Powertrain Control Module (PCM) | 25 |
| 34 | HAZARD – Hazard warning lights, turn signals | 10 |
| R4 | Rear window defroster relay | |
| R5 | Exterior lighting control relay | |
| R6 | Drive-by-wire (electronic throttle) relay | |
| R7 | Headlight relay | |
| R8 | Reverse light relay | |
| R9 | Fuel pump relay | |
| R10 | Starter relay #2 | |
| R11 | Cooling fan relay #2 | |
| R12 | Blower fan motor relay | |
| R13 | Fuel pump speed control relay | |
| R14 | Fuel injector relay | |
| R15 | Starter relay #1 | |
| R16 | Main relay | |
| R17 | Cooling fan relay #1 | |
Auxiliary Relay Box
Relay box component layout: 1 – Rear fog light relay; 2 – Front fog light relay; 3 – Air conditioning (A/C) relay; 4 – Horn relay
Passenger Compartment
Located on the driver's side, behind the lower kick panel cover.
To access and replace fuses in the passenger compartment fuse box, proceed as follows:
1. Pull the fuse box cover toward you...
2. ...and release the retaining clips to remove the cover.
General view of the Mazda CX-7 passenger compartment fuse box.
| Diagram (Version 1) | ||
|---|---|---|
|
||
| No. | Description | Rating (A) |
| 1 | Power windows | 30 |
| 2 | Auxiliary power socket (cabin), Mazda CX-7 cigarette lighter fuse | 15 |
| 3 | Power exterior mirrors | 7.5 |
| 4 | Auxiliary power socket | 15 |
| 5 | Not used | — |
| 6 | Windshield wiper and washer | 30 |
| 7 | Heated exterior mirrors | 7.5 |
| 8 | Mass Air Flow (MAF) sensor, EGR valve | 7.5 |
| 9 | Power windows | 15 |
| 10 | Supplemental Restraint System (SRS) / Airbags | 7.5 |
| 11 | Engine management system | 15 |
| 12 | Instrument cluster | 15 |
| 13 | Instrument panel illumination | 10 |
| 14 | Audio system, interior dome lights | 15 |
| 15 | Heated seats | 20 |
| 15 | Rear fog lights | |
| 16 | Air conditioning system | 10 |
| 16 | Anti-theft security system | |
| 17 | Heated seats | 20 |
| 18 | Air conditioning system | 10 |
| 19 | Rear window wiper and washer | 10 |
| Diagram (Version 2) | |
|---|---|
|
|
| No. / Rating | Description |
| 1 (15 A) | Auxiliary power socket (cabin), cigarette lighter fuse (OUTLET1) |
| 2 (15 A) | Auxiliary power socket (luggage compartment) (OUTLET2) |
| 3 (7.5 A) | Power mirror adjustment – P.MIR |
| 4 (30 A) | Windshield wiper and washer – WIPER |
| 5 (7.5 A) | Rear window defroster – DEF |
| 6 (7.5 A) | Mass Air Flow (MAF) sensor, Exhaust Gas Recirculation (EGR) valve |
| 7 (15 A) | Power windows |
| 8 (7.5 A) | Airbags – A/B |
| 9 (15 A) | Engine management system – ENGINE |
| 10 (10 A) | Instrument cluster |
| 11 (5 A) | Anti-theft security system |
| 12 (15 A) | Interior lighting – ROOM |
| 13 | Not used |
| 14 (10 A) | Instrument panel illumination |
| 15 (20 A) | Heated seats – SEAT |
| 16 (10 A) | Air conditioning – A/C |
| 17 (10 A) | Rear window wiper and washer |
| 18 (10 A) | Rear fog light |