cooling TOYOTA YARIS 2012 User Guide

460 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
CAUTION
When working near the electric cooling fan or radiator grille
Except hybrid vehicle
Vehicles without a smart entry & start system:
Be sure the engine switch is in the “LOCK” position.
With the engine switch in the “ON” position, the electric cooling fan may
automatically start to run if the air conditioning is on and/or the coolant tem-
perature is high. (P. 481)
Vehicles with a smart entry & start system:
Be sure the “ENGINE START STOP” switch is off.
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fan may automatically start to run if the air conditioning is on and/or
the coolant temperature is high. (P. 481)
Hybrid vehicle
Vehicles without an electronic key:
Be sure the engine switch is in the “LOCK” position.
With the engine switch in the “ON” position, the electric cooling fan may
automatically start to run if the air conditioning is on and/or the coolant tem-
perature is high. (P. 481)
Vehicles with an electronic key:
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fan may automat-
ically start to run if the air conditioning is on and/or the coolant temperature
is high. (P. 481)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.

467
4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79E
Engine compartment
1KR-FE engine
Fuse boxes (P. 510)
Engine oil level dipstick
(P. 471)
Engine oil filler cap
(P. 474)
Battery (P. 482)Engine coolant reservoir
(P. 478)
Electric cooling fan
Condenser (P. 481)
Radiator (P. 481)
Washer fluid tank (P. 485)

468 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
1NR-FE engine
Fuse boxes (P. 510)
Engine oil filler cap
(P. 474)
Engine oil level dipstick
(P. 471)
Battery (P. 482)Engine coolant reservoir
(P. 478)
Electric cooling fan
Condenser (P. 481)
Radiator (P. 481)
Washer fluid tank (P. 485)

469 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79E
1ND-TV engine
Fuse boxes (P. 510)
Engine oil filler cap
(P. 474)
Engine oil level dipstick
(P. 471)
Fuel filter (P. 486)
Battery (P. 482)Intercooler (P. 481)
Electric cooling fan
Condenser (P. 481)
Radiator (P. 481)
Engine coolant reservoir
(P. 478)
Washer fluid tank (P. 485)

470 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
1NZ-FXE engine
Fuse boxes (P. 510)
Engine oil filler cap
(P. 474)
Engine coolant radiator cap
Power control unit
coolant reservoir (P. 479)
Engine coolant reservoir
(P. 479)Engine/power control unit
coolant radiator (P. 481)
Electric cooling fan
Condenser (P. 481)
Engine oil level dipstick
(P. 471)
Washer fluid tank (P. 485)

480 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about engine coolant, contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Except hybrid vehicle: Visually check the radiator, hoses, engine coolant res-
ervoir cap, drain cock and water pump.
Hybrid vehicle: Visually check the radiator, hoses, engine/power control unit
coolant reservoir caps, drain cock and water pump.
If you cannot find a leak, have any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
CAUTION
When the engine is hot (except hybrid vehicle)
Do not remove the radiator cap (gasoline engine), or the engine coolant res-
ervoir cap (diesel engine).
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
When the hybrid system is hot (hybrid vehicle)
Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

481 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79E
Radiator, condenser and intercooler
Check the radiator, condenser and intercooler and clear away any
foreign objects.
If any of the above parts are extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
NOTICE
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
CAUTION
When the engine is hot (except hybrid vehicle)
Do not touch the radiator, condenser or intercooler as they may be hot and
cause serious injuries, such as burns.
When the hybrid system is hot (hybrid vehicle)
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

520 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
5IG2 10 ASmart entry & start system, multi-
port fuel injection system/sequen-
tial multiport fuel injection system,
multi-mode manual transmission,
SRS airbag system, steering lock
system, stop lights, Stop & Start
system
6IGN 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
7MET 7.5 AGauge and meters, Stop & Start
system
8PWR HTR
*225 APower heater, multiport fuel injec-
tion system/sequential multiport
fuel injection system
9 EPS 50 A Electric power steering
10 ABS NO.2 30 A ABS, VSC
11 D E F 3 0 ARear window defogger, ID/UP,
MIR-HTR
12 SPARE 10 A Spare fuse
13 PTC 80 APTC heater, outside rear view mir-
ror defogger
14 HTR 40 A Air conditioning system
15 H-LP CLN 30 A
16 RDI FAN 30 A Electric cooling fan
17 ABS NO.1 50 A ABS, VSC
18 BBC
*340 A Stop & Start system
19 ST 30 A Starting system
20 AMP 30 A Audio system
21 D/L NO.2 25 A
Power door lock
22 D.C.C. 30 A DOME, ECU-B NO.1
FuseAmpereCircuit

525 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79EUnder the instrument panel
FuseAmpereCircuit
1 TAIL NO.2 10 A
Front position lights, tail lights,
license plate lights, front fog lights,
rear fog light, multiport fuel injection
system/sequential multiport fuel
injection system, gauge and meters
2 PANEL 5 AGauge and meters, instrument
panel lights, switch illumination
3 DOOR R/R 20 A Power windows
4 DOOR P 20 A Power windows
5 ECU-IG NO.1 5 AElectric cooling fan, rear window
defogger, electric power steering,
main body ECU, windshield wipers,
VSC
6 ECU-IG NO.2 5 A ABS, VSC, Stop & Start system
7A/C 7.5 AAir conditioning system, power
heater, rear window defogger, out-
side rear view mirror defoggers
8 GAUGE 10 ABack-up lights, shift lock control
system, rear seat belt reminder
lights, auto anti-glare inside rear
view mirror, multidrive, audio sys-
tem, multiport fuel injection system/
sequential multiport fuel injection
system, rain sensor

529 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79E
26 ECU-B NO.2 5 AAir conditioning system, gauge and
meters, smart entry & start system,
push-button start system
27 AM2 7.5 A Start system
28 DRL 7.5 A Daytime running lights
29 STRG LOCK 20 A Starter system
30 ABS NO.2 7.5 A Brake system
31 AMP 15 A Audio system
32 IGCT-MAIN 30 AIGCT NO.2, IGCT NO.3, IGCT
NO.4, PCU, BATT FAN
33 D/C CUT 30 A DOME, ECU-B NO.1
34 PTC HTR NO.1 30 A No circuit
35 PTC HTR NO.2 30 A No circuit
36 FAN 30 A Electric cooling fan
37 PTC HTR NO.3 30 A No circuit
38 DEF 25 A MIR HTR, rear window defogger
39 MIR HTR 10 A Outside rear view mirror defogger
40 BATT FAN 10 A Battery cooling fan
41 IGCT NO.2 10 A Hybrid system
42 IGCT NO.4 10 A Hybrid system
43 PCU 10 A Hybrid system
44 IGCT NO.3 10 A Hybrid system
FuseAmpereCircuit