2012 TOYOTA COROLLA ECU

394 4-3. Do-it-yourself maintenance
8 GLOW*80 A No circuit
9 P/I 50 A EFI MAIN, HORN, IG2
10 H-LP MAIN 50 A H-LP LH LO, H-LP RH LO, H-LP
LH HI, H-LP RH HI
11 EFI NO. 2 10 A Emission control system
12 EFI NO. 1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
13 H-LP RH HI 10 A Right-hand headlight (high beam)
14 H-LP LH HI 10 A Left-hand headlight (high beam)
15 H-LP RH LO 10 A Right-hand headlight (low beam)
16 H-LP LH LO 10 A Left-hand headlight (low beam)
17 ETCS 10 A Electronic throttle control system
18 TURN-HAZ 10 A Turn signal lights, emergency
flashers
19 ALT-S 7.5 A Charging system
20 AM2 NO. 2 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system, starting system
21 AM2 30 A Starting system
22 STRG LOCK 20 A Steering lock system
23 IG2 NO. 2 7.5 A Starting system
24 ECU-B2 10 A Air conditioning system
25 ECU-B 10 A
Main body ECU, gauge and meters,
clock
26 RAD NO. 1 15 A Audio system
27 DOME 10 A Trunk light, smart key system, inte-
rior light
28 AMP* 30 A Audio system
FuseAmpereCircuit

396 4-3. Do-it-yourself maintenance
■Under the driver’s side instrument panel
FuseAmpereCircuit
1 DEF 40 A Rear window defogger, MIR HTR
2 PWR SEAT 30 A Power seat
3 TAIL 10 A Parking lights, tail lights, license
plate lights, front side marker lights,
multiport fuel injection system/
sequential multiport fuel injection
system, instrument cluster lights
4 PANEL 7.5 A Switch illumination
5 FR DOOR 20 A Power windows, moon roof
6 RL DOOR 20 A Power windows
7 RR DOOR 20 A Power windows
8 SUNROOF 20 A Moon roof
9 CIG 15 A Cigarette lighter
10 ACC 7.5 A Outside rear view mirrors, audio
system, main body ECU
11 MIR HTR 10 A Outside rear view mirror defogger
12 IGN 7.5 A Steering lock system, SRS airbag
system, multiport fuel injection sys-
tem/sequential multiport fuel injec-
tion system, front passenger
occupant classification system
13 METER 7.5 A Gauge and meters

397
4-3. Do-it-yourself maintenance
4
Maintenance and care
14 POWER
30 A Power windows
15 SEAT HTR 15 A Seat heater
16 HTR-IG 10 A Air conditioning system
17 WIPER 25 A Windshield wipers
18 WASHER 15 A Windshield washer
19 ECU-IG NO. 1 10 A Automatic transmission, main body
ECU, electric power steering, elec-
tric cooling fan(s), shift lock control
system, anti-lock brake system, tire
pressure warning system, vehicle
stability control system, cruise con-
trol system
20 ECU-IG NO. 2 10 A Back-up lights, charging system,
rear window defogger, air condi-
tioning system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, moon roof
21 OBD 7.5 A On-board diagnosis system
22 STOP 10 AStop lights, high mounted stop-
light, anti-lock brake system, main
body ECU, multiport fuel injection
system/sequential multiport fuel
injection system, shift lock control
system, vehicle stability control
system
23 DOOR 25 A Power door lock system
24 ACC-B 25 A CIG, ACC
25 FR FOG 15 A Front fog lights
26 AM1 7.5 A Starting system, ACC, CIG
FuseAmpereCircuit

410 4-3. Do-it-yourself maintenance
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately
after turning off the headlights.
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. Failing 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.

414 5-1. Essential information
Emergency towingIf 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. This should only be attempted on hard surfaced roads
for short distances at low speeds.
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.
1.8 L 4-cylinder (2ZR-FE) engine Towing eyelet
2.4 L 4-cylinder (2AZ-FE) engine Towing eyelet

422 5-2. Steps to take in an emergency
Follow the correction procedures.After taking the specified steps to correct the suspected problem,
check that the warning light turns off.
■ If the malfunction indicator lamp comes on while driving
First check the following:
● Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after taking several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
CAUTION
■ When the electric power steering warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, firmly
hold and operate it using more force than usual.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
Indicates that a door or the
trunk is not fully closed. Check that all doors and the
trunk are closed.
Low fuel level warning
light Indicates that remaining
fuel is about 2.0 gal. (7.5
L, 1.7 Imp. gal.) or less Refuel the vehicle.

434 5-2. Steps to take in an emergency
Taking out the spare tireRemove the luggage floor cover.
Remove the tool tray.
Loosen the center fastener that
secures the spare tire.
STEP 1
STEP 2
STEP 3

440 5-2. Steps to take in an emergency
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to
the vehicle suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat
tire.
Do not use it on other vehicles, and do not use other tire jacks for
replacing tires on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported
by a jack.
●Do not start or run the engine while your vehicle is supported by the
jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a hei ght greater than that required to
replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one
working on or near the vehicle will be injured.