Page 521 of 610
Black plate (521,1)
3. Disconnect the bulb by pulling it out.
4. Install the new bulb in the reverse orderof the removal procedure.
qReplacing Interior Light Bulbs
Overhead light (Front)/Map lights,
Overhead light (Rear), Vanity mirror
lightsí
1. Wrap a small flathead screwdriver with
a soft cloth to prevent damage to the
lens, and then remove the lens by
carefully prying on the edge of the lens
with the flathead screwdriver.
2. Disconnect the bulb by pulling it out.
Overhead light (Front)/Map lights
Overhead light (Rear)
Edge
Vanity mirror lightsí
3. Install the new bulb in the reverse order of the removal procedure.
Trunk light (4 Door)
1. Press both sides of the lens cap toremove it.
Maintenance and Care
Owner Maintenance
8-57íSome models.
Mazda3_8CV6-EA-12H_Edition3 Page521
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 522 of 610

Black plate (522,1)
2. Disconnect the bulb by pulling it out.
3. Install the new bulb in the reverse orderof the removal procedure.
Luggage compartment light (5 Door)
1. Wrap a small flathead screwdriver witha soft cloth to prevent damage to the
lens and remove the lens by carefully
prying on the edge of the lens with the
flathead screwdriver.
2. Disconnect the bulb by pulling it out.
3. Install the new bulb in the reverse order of the removal procedure.
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.
qFuse Replacement
Replacing the fuses on the vehicle's left
side
If the electrical system does not work,
first inspect the fuses on the vehicle's left
side.
1. Make sure the ignition is switched off,
and other switches are off.
2. Remove the cover.
8-58
Maintenance and Care
Owner Maintenance
Mazda3_8CV6-EA-12H_Edition3 Page522
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 523 of 610

Black plate (523,1)
3. Pull the fuse straight out with the fusepuller provided on the inside of the
engine compartment fuse block cover.
4. Inspect the fuse and replace it if it'sblown.
Normal Blown
5. Insert a new fuse of the same amperage
rating, and make sure it fits tightly. If it
does not fit tightly, have an expert
install it. We recommend an
Authorized Mazda Dealer.
If you have no spare fuses, borrow one
of the same rating from a circuit not
essential to vehicle operation, such as
the AUDIO or CIGAR circuit.
CAUTION
Always replace a fuse with one of the
same rating. Otherwise you may
damage the electric system. 6. Reinstall the cover and make sure that
it is securely installed.
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. Make sure the ignition is switched off,
and other switches are off.
2. Remove the fuse block cover.
3. If any fuse but the MAIN fuse is blown, replace it with a new one of the
same amperage rating .
Normal
Blown
Maintenance and Care
Owner Maintenance
8-59
Mazda3_8CV6-EA-12H_Edition3 Page523
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 524 of 610
Black plate (524,1)
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.
4. Reinstall the cover and make sure that it is securely installed.
8-60
Maintenance and Care
Owner Maintenance
Mazda3_8CV6-EA-12H_Edition3 Page524
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 525 of 610
Black plate (525,1)
qFuse Panel Description
Fuse block (Engine compartment)
32 33 34 35
36 37 38 39
54
1 2 3 678
1312 14 15 16
22
11109
212019
23 24 25
29 30 3127
28
26
17 18
DESCRIPTION
FUSE
RATING PROTECTED COMPONENT
1 DCDC
*1――
FA N 2*240 A Cooling faní
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 HEATER*140 A Air conditioner
F.DEF RH*2――
10 EVVT*120 A Engine control system
F.DEF LH*2――
11 FAN 1 40 A Cooling faní
12 ROOM 15 A Overhead lights
13 TCM 15 A Transaxle control systemí
14DSC 20 A Dynamic Stability Control systemí
Maintenance and Care
Owner Maintenance
8-61íSome models.
Mazda3_8CV6-EA-12H_Edition3 Page525
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 526 of 610

Black plate (526,1)
DESCRIPTIONFUSE
RATING PROTECTED COMPONENT
15 BTN 2 7.5 A For protection of various circuits
16 AT PUMP ――
17 PTC
*1――
HEATER*240 A Air conditioner
18 INJ 30 A Engine control systemí
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 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 Instrument panel illumination
35 TAIL 15 A Taillights, Parking lights, License plate lights
36 ENG INJ 15 A Engine control system
37 ENG BAR 15 A Engine control system
38 ENG INJ2
*115 A Engine control system
ENG BAR 2*220 A Engine control system
39 EHPAS IG*1――
ETV*215 A Engine control system
*1 SKYACTIV-G 2.0
*2 MZR 2.0, MZR 2.3 DISI Turbo and MZR 2.5
8-62
Maintenance and Care
íSome models.
Owner Maintenance
Mazda3_8CV6-EA-12H_Edition3 Page526
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 527 of 610
Black plate (527,1)
Fuse block (Left side)
1 4 7 101316195 8 11 14 17 20
6 9 12 15 18 2128 30
22 24 26
29 31
23 25 27 32 33 34
2
3
DESCRIPTION
FUSE
RATING PROTECTED COMPONENT
1 BOSE ――
2 P SEAT 30 A Power seat
í
3P.WIND 30 A Power window
4 D.LOCK 25 A Power door lock
5 ―― ―
6 ―― ―
7 ESCL ――
8 SAS 15 A Air bag
9 ―― ―
10 HAZARD 15 A Hazard warning flashers, Turn signal lights 11 METER 15 A Instrument cluster
12 OUTLET 15 A Accessory sockets
13 R.WIPER 15 A Rear window wiper and washer
í
14CIGAR 15 A Accessory sockets
15 ROOM2 ――
16 HEATER 10 A Air conditioner
17 MIRROR 10 A Power control mirror
18 ST SIG 10 A Engine control system
19 ―― ―
Maintenance and Care
Owner Maintenance
8-63íSome models.
Mazda3_8CV6-EA-12H_Edition3 Page527
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H
Page 528 of 610
Black plate (528,1)
DESCRIPTIONFUSE
RATING PROTECTED COMPONENT
20 AUDIO 7.5 A Audio system
21 M.DEF 7.5 A Mirror defroster
í
22AFS 7.5 A Adaptive Front-Lighting Systemí
23―― ―
24 ENG 20 A Engine control system
25 ―― ―
26 METER2 ――
27 ―― ―
28 AUDIO2 ――
29 ―― ―
30 P.WIND 25 A Power window
31 ―― ―
32 F.WIPER 25 A Front window wiper and washer
33 BOSE 2 25 A Bose
®Sound System-equipped modelí
34 ―― ―
8-64
Maintenance and Care
íSome models.
Owner Maintenance
Mazda3_8CV6-EA-12H_Edition3 Page528
Thursday, February 28 2013 11:31 AM
Form No.8CV6-EA-12H