TOYOTA YARIS HATCHBACK 2012 Owners Manual

272 4-3. Do-it-yourself maintenance
■Use a CR2016 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appli-
ance shops or camera stores.
● Replace only with the same or equivalent type recommended by the
manufacturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
●The wireless remote control will not function properly.
● The operational range will be reduced.
■ When replacing the module (type B only)
CAUTION
■Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.
Replace the module from right above.
Replacing it from diagonally above may
prevent the key buttons from operating
properly.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
NOTICE
■
For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other components inside the remote control.
● Do not bend either of the battery terminals.

274
4-3. Do-it-yourself maintenance
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the engine switch to the “LOCK” position.
Open the fuse box cover.
Engine compartment (type A fuse box) Push the tab in and lift the lid
off.
Engine compartment (type B fuse box) Push the tab in and lift the lid
off.
Engine compartment (type C fuse box) Pull the rubber strip on the
edge to unhook it from the
cover, and then push the
tabs in and lift the cover off.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Remove the battery termi-
nal cover and then the fuse
box cover.
Under the driver’s side instrument panel Remove the lid.
After a system failure, s ee “Fuse layout and amperage
ratings” (→ P. 278) for details about which fuse to check.
Remove the fuse.
Only type A fuse can be
removed using the pullout
tool.
The pullout tool is located on
the back of the type A fuse box
cover.

276 4-3. Do-it-yourself maintenance
Check if the fuse is blown.
Ty p e A Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e BNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e CNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Ty p e D
Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e ENormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e F
Normal fuse
Blown fuse
Contact your Toyota dealer.

278 4-3. Do-it-yourself maintenance
Fuse layout and amperage ratingsEngine compartment (type A fuse box)
FuseAmpereCircuit
1 ID/UP 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
2 EFI MAIN 20 A Multiport fuel injection system/
sequential multiport fuel injection
system
3 EFI NO.3 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system
4 HORN 10 A Horn
5 EFI NO.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
6 IG2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system, airbag system, stop lights,
front passenger occupant classifi-
cation system

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4-3. Do-it-yourself maintenance
4
Maintenance and care
7 IGN
15 AMultiport fuel injection system/
sequential multiport fuel injection
system
8 MET 7.5 A Gauges and meters
9 EPS 50 A Electric power steering system
10 ABS NO.2 30 AAnti-lock brake system, vehicle sta-
bility control system
11 DEF 30 ARear window defogger, outside
rear view mirror defoggers
12 SPARE 10 A Spare fuse
13 PTC 80 APTC heater, outside rear view mir-
ror defoggers
14 HTR 40 A Air conditioning system
15 H-LP CLN 30 A No circuit
16 RDI FAN 30 A Electric cooling fan
17 ABS NO.1 50 AAnti-lock brake system, vehicle sta-
bility control system
18 BBC 40 A No circuit
19 ST 30 A Starting system
20 AMP 15 A No circuit
21 D/L NO.2 25 A No circuit
22 D.C.C 30 A DOME, ECU-B NO.1, ECU-B NO.2
23 STR LOCK 20 A No circuit
24 ECU-B NO.1 5 A Multiport fuel injection system/
sequential multiport fuel injection
system, main body ECU
25 DOME 15 AInterior light, personal lights, audio
system, vehicle stability control
system
26 MIR-HTR 10 A No circuit
FuseAmpereCircuit

280 4-3. Do-it-yourself maintenance
27 ETCS10 AMultiport fuel injection system/
sequential multiport fuel injection
system
28 HAZ 15 ATurn signal lights, emergency
flashers
29 AM2 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system
30 ECU-B NO.2 5 A Gauges and meters, wireless
remote control system, tire pres-
sure warning system, front passen-
ger occupant classification system
31 ALT-S 7.5 A Charging system
32 R/I 50 AEFI MAIN, EFI NO.2, EFI NO.3,
IG2, IGN, MET, HORN
33 SPARE 20 A Spare fuse
34 SPARE 30 A Spare fuse
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compartment (type B fuse box)
FuseAmpereCircuit
1 EU-DRL 15 A No circuit
2 S-HORN 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
3 H-LP MAIN 7.5 A Headlights
4 H-LP RH HI 10 A Right-hand headlight (high beam)
5 H-LP LH HI 10 A Left-hand headlight (high beam),
gauges and meters
6 H-LP RH LO 10 A Right-hand headlight (low beam)
7 H-LP LH LO 10 A Left-hand headlight (low beam),
front fog lights