ECU TOYOTA YARIS 2012 Service Manual

526 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
*1: Replace the fuse with one of the same ampere rating as the original.
*2: Vehicles with front fog lights (H16 halogen bulbs)
*3: Vehicles with front fog lights (H11 halogen bulbs) 9 WASHER 15 A Windshield washer
10 WIPER 20 A Windshield wipers
11 WIPER RR 15 A Rear window wiper
12 P/W 30 A Power windows
13 DOOR R/L 20 A Power windows
14 DOOR 20 A Power windows
15 CIG 15 A Power outlets
16 ACC 5 AMain body ECU, outside rear view
mirrors, audio system, Stop & Start
system, shift lock control system
17 D/L 25 A Power door lock system
18 OBD 7.5 A On-board diagnosis system
19 FOG RR 7.5 A Rear fog light, gauge and meters
20 STOP 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, smart entry & start system,
ABS, VSC, stop lights, high
mounted stoplight, shift lock control
system
21 AM1 7.5 A Starting system
22 FOG FR7.5 A
*1,2
Front fog lights, gauge and meters
15 A*1,3
23 D-D/L 25 A D-D/L
24 SHADE 25 A
25 S-HTR 15 A Seat heaters
FuseAmpereCircuit

528 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
11 IG2 NO.2 10 ASmart entry & start system, push-
button start system, multiport fuel
injection system/sequential multi-
port fuel injection system, SRS air-
bag system, steering lock system,
stop lights
12 DOME 15 AAudio system, main body ECU,
personal lights, foot well lights
13 ECU-B NO.1 5 AMain body ECU, smart entry & start
system
14 METER 7.5 A Gauge and meters
15 IGN 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
16 H-LP RH-HI 5 A Right-hand headlight (high beam)
17 H-LP LH-HI 5 ALeft-hand headlight (high beam),
gauge and meters
18 D/L NO.2 25 A
Power door lock
19 HAZ 10 A Emergency flashers
20 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
21 ABS NO.1 20 A Brake system
22 ENG W/PMP 30 AMultiport fuel injection system/
sequential multiport fuel injection
system
23 H-LP-MAIN 20 AH-LP LH-LO, H-LP RH-LO, H-LP
LH-HI, H-LP RH-HI
24 ABS MTR NO.1 30 A Brake system
25 P/I 50 A EFI-MAIN, HORN, IG2
FuseAmpereCircuit

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

531 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
2 PANEL 5 AInstrument panel lights, manual
headlight leveling dial, gauge and
meters
3 DOOR R/R 20 A Power window
4 DOOR P 20 A Power window
5 ECU-IG NO.1 5 ARear window defogger, main body
ECU, brake system, vehicle stabil-
ity control system, shift lock control
system, audio system, windshield
wipers
6 ECU-IG NO.2 5 A Electric power steering system
7 A/C 7.5 A Air conditioning system
8 GAUGE 10 ABack-up lights, shift lock control
system, rear seat belt reminder
lights, auto anti-glare inside rear
view mirror, hybrid transmission,
audio system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, rain sensor
9 WASHER 15 A Windshield wipers and washer
10 WIPER 20 A Windshield wipers and washer
11 WIPER RR 15 A Rear window wiper

532 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
12 P/W 30 A Power windows
13 DOOR R/L 20 A Power windows
14 DOOR 20 A Power windows
15 CIG 15 A Power outlets
16 ACC 5 AMain body ECU, audio system, out-
side rear view mirrors, shift lock
control system, vanity lights
17 D/L 25 A Power door lock system
18 OBD 7.5 A On-board diagnosis system
19 FOG RR 7.5 A Rear fog light, gauge and meter
20 STOP 7.5 AStarter system, shift lock control
system, brake system, stop lights,
high mounted stoplight
21 AM1 7.5 A No circuit
22 FOG FR 7.5 A Front fog lights, gauge and meters
23 D-D/L 25 A D-D/L
24 SHADE 25 A
25 S-HTR 15 A Seat heaters
FuseAmpereCircuit

540 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79ETurn and secure the bulb base.
Shake the bulb base gently to
check that it is not loose, turn the
headlights, on once and visually
confirm that no light is leaking
through the mounting.
Install and turn the cover to the
closed position.
Closed position
The illustrations show the removal of a headlight from a right-hand
drive vehicle.
Front fog lights (if equipped)
Vehicles without a front
spoiler
Remove the 2 screws.
Vehicles with a front spoiler
Remove the 3 screws.
The front spoiler will come off on
that side when the screws are
removed.
*: Vehicles with a front spoiler
only
*

542 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79EInstall a new bulb.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb. Install
the connector.
Shake the bulb base gently to
check that it is not loose, turn the
front fog light, on once and visu-
ally confirm that no light is leaking
through the mounting.
When installing the fender liner, install by conducting
with the directions reversed.
Front position lights (except hybrid vehicle)
Turn the bulb base counterclock-
wise.

549 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79E
LED lights
The front position lights and daytime running lights (LED type), stop/tail lights
(LED type) and high mounted stoplight consists of a number of LEDs. If any
of the LEDs burn out, take your vehicle to any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional to have the
light replaced.
If one or more LEDs in a stop light burn out, your vehicle may not conform to
local laws (ECE).
Condensation build-up on the inside of the lens
Contact any authorized Toyota dealer or repairer, or another duly qualified
and equipped professional for more information in the following situations.
Temporary condensation build-up on the inside of the headlight lens does
not indicate a malfunction.
Large drops of water have built up on the inside of the lens.
Water has built up inside the headlight.
When replacing light bulbs
P. 533
CAUTION
Replacing light bulbs
Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may cause burns.
Do not touch the glass portion of the light bulb with bare hands. Hold the
bulb by the plastic or metal portion.
If the bulb is scratched or dropped, it may blow out or crack.
Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
To prevent damage or fire
Make sure bulbs are fully seated and locked.

554 5-1. Essential information
YARIS_F (including HV)_WE_52C79E
Emergency towing
If a tow truck is not available in
an emergency, your vehicle may
be temporarily towed using a
cable or chain secured to the
emergency towing eyelet.
Except hybrid vehicle: This
should only be attempted on
hard surfaced roads for short
distances at low speeds.
Hybrid vehicle: This should only
be attempted on hard surfaced
roads for short distances, such
as distances required to load
onto a lift-type truck or flatbed
truck, at under 30 km/h (18
mph).
A driver must be in the vehicle to
steer and operate the brakes.
The vehicle’s wheels, drive train,
axles, steering and brakes must
be in good condition.
Installing towing eyelet
Except hybrid vehicle
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body as shown in the
illustration.

5
555 5-1. Essential information
When trouble arises
YARIS_F (including HV)_WE_52C79ERemove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.