2015 TOYOTA AVALON ECU

3136-2. Maintenance
6
Maintenance and care
AVALON (U)_(OM41456U)
Head restraints• Do the head restraints movesmoothly and lock securely?
Indicators/buzzers• Do the indicators and buzzersfunction properly?
Lights • Do all the lights come on?
Parking brake
• Moves smoothly?
• When parked on a slope and the parking brake is on, is the vehicle
securely stopped?
Seat belts
• Do the seat belts operatesmoothly?
• The seat belts should not be dam- aged.
Seats• Do the seat controls operate prop-erly?
Steering wheel
• Does the steering wheel rotatesmoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds coming from the steering
wheel.
ItemsCheck points

3556-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41456U)7 ST/AM2 30 A Starter system
8 H-LP-MAIN 30 A
H-LP LH-LO, H-LP RH-LO, headlights
(low beam)
9 ABS NO.1 50 A Vehicle stability control system
10 EPS 80 A Electric power steering 11 S-HORN 7.5 A S-HORN
12 HORN 10 A Horns
13 EFI NO.2 15 A Multiport fuel injection system/sequential
multiport fuel injection system, electronic
controlled transmission
14 EFI NO.3 10 A Multiport fuel injection system/sequential
multiport fuel injection system
15 INJ 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system
16 ECU-IG2 NO.3 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system, steering
lock system, electronic controlled trans-
mission, stop lights, high-mounted stop
light
17 IGN 15 A Starter system
18 D/L-AM2 20 A No circuit
19 IG2-MAIN 25 A IGN, INJ, METER-IG2, ECU-IG2 NO.3,
A/B, ECU-IG2 NO.2, ECU-IG2 NO.1
20 ALT-S 7.5 A Charging system
21 MAYDAY 5 A MAYDAY
22 TURN&HAZ 15 A Turn signal lights, emergency flashers,
gauge and meters
23 STRG LOCK 10 A Steering lock system
24 AMP 15 A Audio system
25 H-LP LH-LO 20 A
*1
Left-hand headlight (low beam)
15 A*2
26 H-LP RH-LO 20 A*1
Right-hand headlight (low beam)
15 A*2
FuseAmpereCircuit

3566-3. Do-it-yourself maintenance
AVALON (U)_(OM41456U)
*1:Vehicles with discharge headlight low beam
*2:Vehicles with halogen headlight low beam
27 EFI-MAIN NO.1 30 A EFI NO.2, EFI NO.3, A/F sensor
28 SMART 5 A No circuit
29 ETCS 10 A Electronic throttle control system
30 TOWING 20 A No circuit
31 EFI NO.1 7.5 A
Multiport fuel injection system/sequential
multiport fuel injection system, electronic
controlled transmission
32 A/F 20 A A/F sensor
33 AM2 7.5 A Smart key system
34 RADIO-B 20 A Audio system, navigation system
35 DOME 7.5 A Vanity lights, personal/interior lights,
trunk light, door courtesy lights, illumi-
nated entry system,
ambient light
36 ECU-B NO.1 10 AMultiplex communication system, smart
key system, gauge and meters, starter
system, steering sensor, air conditioning
system, outside rear view mirror, front
power seats
37 SPARE 25 A Spare fuse
38SPARE30 ASpare fuse
FuseAmpereCircuit

3576-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41456U)■
Driver’s side instrument panel
FuseAmpereCircuit
1 H-LP LVL 7.5 A Automatic headlight leveling system
2 S/HTR RR 20 A Rear seat heater
3 ECU-ACC 5 A Outside rear view mirrors, glove box light,
air conditioning system, multiplex com-
munication system
4 RR P/OUTLET 15 A Power outlets
5 ECU-IG2 NO.2 7.5 A Multiplex communication system, smart
key system
6 ECU-IG2 NO.1 7.5 A Multiport fuel injection system/sequential
multiport fuel injection system
7 A/B 10 A Front passenger occupant classification
system, SRS airbag system
8 FUEL DR LOCK 10 A Fuel filler door lock
9 D/L-AM1 20 A Multiplex communication system, power
door lock, trunk opener switch
10 PSB 30 A Pre-collision system 11 P/SEAT FR 30 A Power seats
12 S/ROOF 10 A Moon roof
13 A/C-B 7.5 A Air conditioning system

3586-3. Do-it-yourself maintenance
AVALON (U)_(OM41456U)14 STOP 7.5 A
Stop/tail lights, multiport fuel injection
system/sequential multiport fuel injection
system, vehicle stability control system,
anti-lock brake system, electronic con-
trolled transmission, high mounted stop-
light, smart key system, shift lock control
system
15 AM1 7.5 A No circuit
16 4-WAY LUMBAR 7.5 A Power seat
17 ECU-B NO.2 10 A Smart key system, tire pressure warning
system, power window, front passenger
occupant classification system
18 OBD 10 A On-board diagnosis system
19 S/HTR&FAN F/L 10 A Seat heaters
20 S/HTR&FAN F/R 10 A Seat heaters
21 RADIO-ACC 5 A Audio system, navigation system
22 FR P/OUTLET 15 A Power outlets
23 WIPER-S 10 A Dynamic radar cruise control, pre-colli-
sion system
24 EPS-IG1 7.5 A Electric power steering
25 BKUP LP 7.5 A Back-up lights, multiport fuel injection
system/sequential multiport fuel injection
system, electronic controlled transmis-
sion
26 WIPER 25 A Windshield wipers and washer
27 A/C-IG1 7.5 A Air conditioning system
28 WASHER 10 A Windshield wipers and washer
29 DOOR R/L 20 A Rear left-hand power windows
30 DOOR F/L 20 A Power windows, outside rear view mir-
rors
31 DOOR R/R 20 A Rear right-hand power windows
32 DOOR F/R 20 A Power windows, outside rear view mir-
rors
FuseAmpereCircuit

3596-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41456U)33 TAIL 10 A
Parking lights, side marker lights, stop/tail
lights, rear turn signal lights, back up
lights, license plate lights, fog lights
34 PANEL 10 A Switch illumination, air conditioning sys-
tem, glove box light, interior lights, per-
sonal lights, audio system, navigation
system, rear sunshade, seat heater,
Blind Spot Monitor, driving mode select
switch, steering wheel switch, ambient
light, trunk opener switch, vehicle stability
control off switch, emergency flashers,
outside rear view mirrors
35 ECU-IG1 NO.1 10 A Vehicle stability control system, electric
cooling fans, steering sensor, multiport
fuel injection system/sequential multiport
fuel injection system, charging system,
rear window defogger, outside rear view
mirror defoggers, rain-sensing windshield
wipers, Blind Spot Monitor, rear sun-
shade, dynamic radar cruise control, mul-
tiplex communication system, rear seat
heater, backup lights, fog lights, headlight
(high beam), daytime running light, pre-
collision system
36 ECU-IG1 NO.2 10 A Shift lock control system, seat heaters,
smart key system, tire pressure warning
system, wireless remote control, multi-
plex communication system, audio sys-
tem, navigation system, moon roof, auto
anti-glare inside rear view mirror, outside
rear view mirrors, pre-collision system,
air conditioning controls, rain-sensing
windshield wipers, starting system,
dynamic radar cruise control
FuseAmpereCircuit

3776-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON (U)_(OM41456U)
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. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, 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.
●Vehicles with discharge headlights:
While the low beam headlights are
turned on, and for a short time after
they have been turned off, metal com-
ponents at the rear of the headlight
assembly will be extremely hot. To pre-
vent burns, do not touch these metal
components until you are certain they
have cooled down.
Metal components

3817-1. Essential information
7
When trouble arises
AVALON (U)_(OM41456U)
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort
required to slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To stop the engine, press and
hold the engine switch for 2
consecutive seconds or more,
or press it briefly 3 times or
more in succession.
Stop the vehicle in a safe place by the road.
If your vehicle has to be stopped in an
emergency
Only in an emergency, such as if it becomes impossible to stop
the vehicle in the normal way, st op the vehicle using the follow-
ing procedure:
1
2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
CAUTION
■ If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the
brake pedal harder to depress and the steering wheel heavier to turn.
Decelerate as much as possible before turning off the engine.
5