Fuses and relays Mazda Demio (DY; 2002-2008)

Mazda Demio DY (2nd generation) was produced in 2002, 2003, 2004, 2005, 2006, 2007 and 2008 with markings DY3R, DY3W , DY5R, DY5W. During this time, the model has been restyled. In our publication you will find a description of the Mazda Demio dy relays and fuses with block diagrams and photo examples of execution. Highlight the cigarette lighter fuse. These schemes are also suitable for Mazda Verisa owners.

In the passenger compartment

Fuse box

It is located at the bottom of the dashboard, not far from the steering wheel, behind a protective cover.

Photo - example.

Example of designations from the block cover.

1 15A ROOM - Interior lighting, luggage compartment lighting, radio
2 15А CIGAR - Cigarette lighter
2 15А AUX PWR - Socket for connecting additional equipment (Mazda Verisa)
3 7,5А MIRROR - Electric drive of side rear-view mirrors, radio tape recorder
4 10A METER - Instrument cluster
5 20А WIPER - Screen wipers and washers
6 10A SAS - Active safety system (airbags)
7 15A ENGINE - Engine management system
8 15А OUT - Automatic transmission control unit (Mazda Demio)
9 30А P.WIND - Electric drive glass lifters
10 7,5А M.DEF - Side mirrors (Mazda Verisa, Mazda Demio from 2005)
11 15А S-WARM - Heated seats
12 7,5А ST.SIG - Ignition, Starter, Start
13 7.5A TAIL - Side lights, license plate light
14 7.5A - Interior lighting, instrument cluster illumination
15 7,5А MAG.CLUCH - Electromagnetic clutch of the air conditioner compressor
16 7.5A A / C - Air Conditioning
17 10А R.WIP - Rear door glass wiper and washer
18 10A BACK - Reversing light
19 25А SUNROOF - Sunroof * (Mazda Demio)


Some relays are installed in the passenger compartment outside the fuse box.

Layout diagram


  • 13 - mounting block under the dashboard from the front passenger side (windshield wiper motor relay, windshield wiper operating mode relay at high speed, windshield washer electric pump relay, rear window wiper motor relay, rear window washer electric pump relay, marker lamps relay, horn relay)
  • 14 - cigarette lighter
  • 15 - sensor for the presence of a key in the ignition
  • 16 - ignition lock.

In the engine compartment

Located on the left side of the engine compartment.

Photo - an example of execution.

Diagram from the block cover.

1 100A MAIN - Main fuse
2 30A FAN - Condenser fan motor
3 60A IG KEY1 - Fuse for various circuits
4 40A HEATER - Heater
5 15A FUEL PUMP - Fuel pump
6 30А DEFOG - Heated rear door glass
7 10A EGI COMP1 - Engine management system
8 15А STOP - Stop lights and sound signal (horn)
9 15А HAZARD - Alarm
10 30A IG KEY2 - Fuse for various circuits
11 15A ETV - Electric throttle valve (Mazda Verisa, Mazda Demio since 2005)
12 25A BTN - Fuse for various circuits
13 30A ABS-P - Anti Lock Brake System (ABS)
14 20A ABS-V - Anti Lock Brake System (ABS)
15 15А FOG - Fog lights
16 20А P.WIND - Electric drive of the stele lift
17 30А DOOR LOCK - Central locking
18 15A EGI INJ - Engine management system
19 15A EGI COMP2 - Engine management system
20 10A HEAD L HI - High beam (left headlight)
21 10A HEAD R HI - High beam (right headlight)
22 10A HEAD LLO HLGN - Low beam (left headlight)
22 20А HEAD LLO HID - Low beam (left headlight)
23 10А HEAD RLO HLGN - Low beam (right headlight)
23 20А HEAD RLO HID - Low beam (right headlight)
R1 Relay №1 cooling fan
R2 Relay for air conditioning
R3 Heater blower motor relay
R4 Heated rear window relay
R5 Starter relay
R6 Fuel pump relay
R7 Headlamp low beam relay
R8 High beam relay
R9 Main relay
R10 Relay №2 cooling fan
Similar cars

Does mazda demio 2005 have a fuze for 02 sensors? I changed my 02 sensor and my car started initially but after driving it stalled and now it wont start. Also what happens if i put an upstream sensor in the downstream position?

Lavaunne Blyth

HI, where do I find the fuse for the horn or relay for it? Thanks

hi, check fuse #8 in the engine compartment
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