Table of Contents
The CX-5 is a compact crossover SUV produced by Japanese automaker Mazda. It was the company's first production vehicle designed under the "KODO: Soul of Motion" design philosophy. Below are detailed fuse box diagrams and relay layouts for the second-generation Mazda CX-5 (KF chassis code) covering model years 2016, 2017, 2018, 2019, 2020, 2021, and 2022.
Here you will find component locations, photos, and circuit assignments for the power distribution centers. Fuses for critical circuits such as the "Cigarette lighter" (accessory power outlets) and "Fuel Pump" are highlighted in bold.
Engine Compartment
Located behind the protective cover on the left side of the engine bay, near the battery.
Overview.
| Diagram | ||
|---|---|---|
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| No. | Circuit Protected / Description | Rating (A) |
| 1 | ADD FAN GE - Auxiliary engine cooling fan | 30 |
| 2 | IG2 - Ignition supply / Various electrical circuits | 30 |
| 3 | INJECTOR - Fuel injection system / Engine control module | 30 |
| 4 | FAN DE - Main engine cooling fan | 40 |
| 5 | P.WINDOW1 - Power windows | 30 |
| 6 | Spare | - |
| 7 | ADD FAN DE - Auxiliary engine cooling fan | 40 |
| 8 | EVVT - Electric Variable Valve Timing system | 20 |
| 9 | DEFOG - Rear window defogger | 40 |
| 10 | DCDC DE - DC-DC converter supply | 40 |
| 11 | FAN GE - Engine cooling fan | 30 |
| 12 | Spare | - |
| 13 | Spare | - |
| 14 | Spare | - |
| 15 | ENG.MAIN - Engine management system main power supply | 40 |
| 16 | ABS / DSC M - Anti-lock Braking System (ABS), Dynamic Stability Control (DSC) pump motor | 50 |
| 17 | CABIN + B - Passenger compartment main power supply / Body control module | 50 |
| 18 | WIPER - Windshield wipers and washer system | 20 |
| 19 | HEATER - Climate control blower motor / HVAC system | 40 |
| 20 | DCDC REG - DC-DC voltage regulator | 30 |
| 21 | ENGINE IG1 - Engine control module ignition feed | 7.5 |
| 22 | C / U IG1 - Control module ignition supply | 15 |
| 23 | H / L LOW L HID L - Left low-beam headlamp / HID unit | |
| 24 | H / L LOW R - Right low-beam headlamp | 15 |
| 25 | ENGINE 3 - Engine control system | 15 |
| 26 | ENGINE 2 - Engine control system | 15 |
| 27 | ENGINE 1 - Engine control system | 15 |
| 28 | AT - Automatic transmission control unit, ignition switch circuit | 15 |
| 29 | H / CLEAN - Headlight washers | 20 |
| 30 | A / C - Air conditioning compressor clutch | 7.5 |
| 31 | AT PUMP - Transmission electric oil pump | 15 |
| 32 | STOP - Stop lights (brake lamps), rear fog lamp | 10 |
| 33 | R.WIPER - Rear window wiper motor | 15 |
| 34 | H / L HI - High-beam headlamps | 20 |
| 35 | HID R - Right headlamp / HID control unit | 15 |
| 36 | FOG - Front fog lights | 15 |
| 37 | ENG. + B - Engine management system (+B battery feed) | 7.5 |
| 38 | AUDIO2 - Audio unit / Infotainment system | 7.5 |
| 39 | GLOW SIG - Glow plug signal (Diesel engine control) | 5 |
| 40 | METER2 - Instrument cluster unit | 7.5 |
| 41 | METER1 - Instrument cluster main feed | 10 |
| 42 | SRS1 - Supplemental Restraint System (Airbags) control module | 7.5 |
| 43 | BOSE - Bose audio amplifier (if equipped) | 25 |
| 44 | AUDIO 1 - Audio system / Infotainment main power | 15 |
| 45 | ABS / DSC S - Anti-lock Braking System (ABS), Dynamic Stability Control (DSC) solenoid valves | 30 |
| 46 | FUEL PUMP - Fuel pump feed circuit | 15 |
| 47 | FUEL WARM - Fuel heater (Diesel models) | 25 |
| 48 | TAIL - Parking lights, taillights, and side marker lamps | |
| 49 | Spare | - |
| 50 | HAZARD - Hazard warning flashers, turn signals, position lights, license plate illumination | 50 |
| 51 | Spare | - |
| 52 | R.OUTLET2 - Rear accessory power socket | 15 |
| 53 | HORN - Horn circuit | 15 |
| 54 | ROOM - Interior / Overhead illumination | 15 |
| Relay Module Assignments | ||
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| TNS RELAY - Tail, parking, and marker light relay | ||
| A / C RELAY - Air conditioning compressor clutch relay | ||
| INJECTOR RELAY - Fuel injector relay | ||
| ELECTRIC AT OIL PUMP RELAY - Transmission electric oil pump relay | ||
| HEADLIGHT HI RELAY - High-beam headlamp relay | ||
| STARTER RELAY - Starter motor relay | ||
| BLOWER RELAY - HVAC blower motor relay | ||
| ELECTRIC VARIABLE VALVE TIMING RELAY - Electric VVT system relay | ||
| REAR WINDOW DEFROSTER RELAY - Rear window grid defogger relay | ||
| FUEL PUMP RELAY - Fuel pump control relay | ||
| OUTLET RELAY - Accessory power socket relay | ||
| HEADLIGHT RELAY - Low-beam headlamp relay | ||
| IG1 RELAY - Main ignition supply relay | ||
| FRONT FOG RELAY - Front fog light relay | ||
| COOLING FAN RELAY - Cooling fan relays No. 2 and No. 3 | ||
| MAIN RELAY - Engine control unit main power relay | ||
| DRL RELAY - Daytime running lights relay | ||
| HORN RELAY - Horn relay | ||
| COOLING FAN ACC RELAY - Auxiliary engine cooling fan relay | ||
Passenger Compartment
The passenger compartment fuse panel is located on the lower left kick panel in the driver's footwell. Remove the trim cover to access the fuses.
Cover removal access.
| Diagram | ||
|---|---|---|
|
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| No. | Circuit Protected / Description | Rating (A) |
| 1 | P.SEAT D - Driver power seat adjustment | 30 |
| 2 | P.WINDOW 3 - Power window control module | 30 |
| 3 | R.OUTLET3 - Rear accessory power socket | 15 |
| 4 | P.WINDOW 2 - Power window control module | 25 |
| 5 | SRS2 / ESCL - Electronic Steering Column Lock / Airbag module feed | 15 |
| 6 | D.LOCK - Power door locks | 25 |
| 7 | SEAT WARM - Heated front seats (if equipped) | 20 |
| 8 | SUNROOF - Power sunroof / moonroof (if equipped) | 10 |
| 9 | F.OUTLET - Front power outlet (Mazda CX-5 cigarette lighter fuse) | 15 |
| 10 | MIRROR - Power exterior mirrors adjustment | 7.5 |
| 11 | R.OUTLET1 - Auxiliary rear power socket (if equipped) | 15 |
| 12 | Spare | - |
| 13 | Spare | - |
| 14 | Spare | - |
| 15 | Spare | - |
| 16 | Spare | - |
| 17 | M.DEF - Heated exterior mirrors | 7.5 |
| 18 | R.SEAT W - Heated rear seats (if equipped) | 20 |
| 19 | Spare | - |
| 20 | AT IND - Automatic transmission gear position indicator | 7.5 |
| 21 | P.SEAT P - Passenger power seat adjustment | 30 |