Page 427 of 508
Black plate (427,1)
Replacing the fuses under the hood
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:
1. Turn off the ignition switch and all
other switches.
2. Remove the fuse block cover.
3. If any fuse but the MAIN fuse is
blown, replace it with a new oneof the
same amperage rating.
Normal
Blown
WARNING
Do not replace the main fuse by
yourself. Have an Authorized Mazda
Dealer perform the replacement:
Replacing the fuse by yourself is
dangerous because the MAIN fuse is
a high current fuse. Incorrect
replacement could cause an electrical
shock or a short circuit resulting in a
fire.
Maintenance and Care
Owner Maintenance
8-55
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Form No.8BM5-EA-10F
Page 428 of 508
Black plate (428,1)
qFuse Panel Description
Fuse block (Engine compartment)
32 33 34 35
36 37 38 39
5 4 1 2 3 678
13 12 14 15 16
22
11 10 9
21 20 19
23 24 25
29 30 3127
28 26 17 18
DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT
1 FAN 2 40 A Cooling fan
í
2 ENG MAIN 40 A Engine control system
3 BTN 1 50 A For protection of various circuits
4 A/C MAG 7.5 A Air conditioner
5 H/L HI 20 A Headlight high beam
6 FOG 15 A Fog lights
í
7 H/L WASH――
8 SUNROOF 15 A Moonroofí
9 F.DEF RH――
10 F.DEF LH――
11 FAN 1 40 A Cooling fan
12 ROOM 15 A Interior lights
13 TCM 15 A TCM
í
14 DSC 20 A Dynamic Stability Control systemí
15 BTN 2 7.5 A For protection of various circuits
16 AT PUMP――
17 HEATER 40 A Air conditioner
8-56
Maintenance and Care
íSome models.
Owner Maintenance
Mazda3_8BM5-EA-10F_Edition2 Page428
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Black plate (429,1)
DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT
18 INJ 30 A Injector
í
19 R.DEF 30 A Rear window defroster
20 IGKEY 2 40 A For protection of various circuits
21 IGKEY 1 40 A For protection of various circuits
22 HORN 15 A Horn
23 STOP 15 A Brake lights
24
10A Engine control system
25 FUEL PUMP 25 A Fuel system
26 ABS 40 A ABS
27 SEAT WARM 20 A Seat warmer
í
28 EHPAS 80 A Electro-Hydraulic Power Assist Steering
29―― ―
30 ABS IG 7.5 A ABS
31 SWS 7.5 A Air bag
32 H/L LO RH 15 A Headlight low beam (RH)
33 H/L LO LH 15 A Headlight low beam (LH)
34 ILLUM 7.5 A Dashboard illumination
35 TAIL 15 A Taillights
36 ENG INJ 15 A Engine control system
37 ENG BAR 15 A PCM
38 ENG BAR 2 20 A PCM
39 ETV 15 A Electric throttle valve
Maintenance and Care
Owner Maintenance
8-57íSome models. Mazda3_8BM5-EA-10F_Edition2 Page429
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Form No.8BM5-EA-10F
Page 430 of 508
Black plate (430,1)
Fuse block (Passenger's side)
1 4 7 10131619
5 8 11 14 17 20
6 9 12 15 18 21
28 30 22 24 26
29 31 23 25 2732 33 34 2
3
DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT
1 BOSE 30 A Bose
®Sound System-equipped modelí
2 P SEAT 30 A Power seatí
3 P.WIND 30 A Power window
4 D LOCK 25 A Door lock motor
5―― ―
6―― ―
7 ESCL――
8 SAS 15 A Air bag
9―― ―
10 HAZARD 15 A Hazard warning flashers
11 METER 15 A For protection of various circuits
12 OUTLET 15 A Accessory sockets
13 R WIPER 15 A Rear wiper
14 CIGAR 15 A Lighter
15―― ―
16 HEATER 10 A Air conditioner
17 MIRROR 10 A Power control mirror
18 ST SIG 10 A Starter sig
19―― ―
8-58
Maintenance and Care
íSome models.
Owner Maintenance
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Form No.8BM5-EA-10F
Page 431 of 508
Black plate (431,1)
DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT
20 AUDIO 7.5 A Audio system
21 M.DEF 7.5 A Mirror defroster
í
22 AFS 7.5 A Adaptive Front-Lighting Systemí
23―― ―
24 ENG 20 A Engine control system
25―― ―
26―― ―
27―― ―
28―― ―
29―― ―
30 P.WIND 25 A Power window
31―― ―
32 F WIPER 25 A Windshield wiper and washer
33―― ―
34―― ―
Maintenance and Care
Owner Maintenance
8-59íSome models. Mazda3_8BM5-EA-10F_Edition2 Page431
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Form No.8BM5-EA-10F
Page 497 of 508

Black plate (497,1)
qTires
NOTE
The tires have been optimally matched with the chassis of your vehicle.
When replacing tires, Mazda recommends that you replace tires of the same type originally fitted to
your vehicle. For details, contact an Authorized Mazda Dealer.
Check the tire pressure label for tire size and inflation pressure.
Refer to Tire Inflation Pressure on page 8-36.
Standard tire
(Except 2.3-liter turbocharged engine)
Tire sizeInflation pressure
Front Rear
P205/55R16 89H 240 kPa (35 psi) 240 kPa (35 psi)
P205/50R17 88V 220 kPa (32 psi) 220 kPa (32 psi)
(2.3-liter turbocharged engine)
Tire sizeInflation pressure
Front Rear
P225/40R18 88Y 240 kPa (35 psi) 230 kPa (34 psi)
Temporary spare tire
Tire size Inflation pressure
T115/70D15 90M 420 kPa (60 psi)
T125/70D16 96M 420 kPa (60 psi)
T125/70D17 98M 420 kPa (60 psi)
qFuses
Refer to the fuse rating on page 8-54.
Specifications
10-11
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Form No.8BM5-EA-10F
Page 504 of 508

Black plate (504,1)
F
Flasher
Hazard warning .......................... 5-71
Headlights .................................. 5-59
Flat Tire ............................................... 7-3
Changing ...................................... 7-9
Spare tire and tool storage ............ 7-3
Fluids
Classification .............................. 10-4
Owner maintenance ................... 8-15
Fog Lights ......................................... 5-65
Foot Brake .......................................... 5-5
Front Seats
(Electrically Operated Seats) ............... 2-4
Front Seats
(Manually Operated Seats) ................. 2-2
Fuel
Filler lid and cap ........................ 3-47
Gauge ......................................... 5-38
Requirements ............................... 4-2
Tank capacity ............................. 10-5
Fuses ................................................. 8-54
Panel description ........................ 8-56
Replacement ............................... 8-54
G
Gauges .............................................. 5-36
Glove Compartment ........................ 6-110
H
Hazard Warning Flasher .................... 5-71
Hazardous Driving .............................. 4-8
H
Headlights
Control ....................................... 5-59
Flashing ...................................... 5-62
High-low beam .......................... 5-62
Leveling ..................................... 5-62
On reminder ............................... 5-62
Hood Release .................................... 3-49
Horn .................................................. 5-71
I
Ignition
Keys ........................................... 3-26
Switch .......................................... 5-2
Illuminated Entry System ................. 6-94
Immobilizer System
(with Advanced Key) ........................ 3-53
Immobilizer System
(without Advanced Key) ................... 3-57
Indicator Lights ................................. 5-41
AFS OFF .................................... 5-55
Cruise ......................................... 5-55
DSC OFF .................................... 5-55
Headlight high-beam .................. 5-54
KEY ............................................ 5-52
Low engine coolant
temperature ................................ 5-54
Power steering malfunction ........ 5-56
Security ...................................... 5-53
Shift position .............................. 5-54
TCS/DSC ................................... 5-54
Turn signal/hazard warning ........ 5-56
Information Display .......................... 6-96
Audio display ............................. 6-97
Climate control display .............. 6-97
Clock .......................................... 6-97
Information display functions .... 6-96
Outside temperature display ....... 6-97
11-4
Index
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Form No.8BM5-EA-10F