2012 TOYOTA RAV4 ECU

364 4-3. Do-it-yourself maintenance
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
■ After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your
head or body.
NOTICE
■When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood with the support rod up could cause the hood to bend.

369
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine compartment cover
■ Removing the engine compartment cover
■ Installing the clips
NOTICE
■After installing an engine compartment cover
Make sure that the cover is securely installed in its original position.

405
4-3. Do-it-yourself maintenance
4
Maintenance and care
Fuse layout and amperage ratings
■ Engine compartment
Type A (driver’s side)
FuseAmpereCircuit
1 SPARE 30 A Spare fuse
2 SPARE 20 A Spare fuse
3 SPARE 10 A Spare fuse
4 ECU-B2 7.5 A Air conditioning system, power win-
dows, smart key system
5 ALT-S 7.5 A Charging system
6 STR LOCK 20 A Smart key system
7 RAD NO.1 20 A Audio system

406 4-3. Do-it-yourself maintenance
8 ECU-B10 AGauges and meters, clock, main
body ECU, wireless remote control,
smart key system, audio system,
front passenger occupant classifi-
cation system, ABS, TRAC, VSC,
AUTO LSD, downhill assist control
system, hill-start assist control sys-
tem, Active Torque Control 4WD
system
9 DOME 10 AVanity lights, personal/interior
lights, interior light, luggage com-
partment light, engine switch light,
foot lights
10 H-LP LH 10 A Left-hand headlight (high beam)
11 H-LP RH 10 A Right-hand headlight (high beam)
12 H-LP LL 10 A Left-hand headlight (low beam)
13 H-LP RL 10 A Right-hand headlight (low beam)
14 AC INV 15 A AC inverter
15 TOWING*
130 A No circuit
16 DEICER 20 A Windshield wiper deicer
17 HTR 50 A Air conditioning system
18 PTC NO.3 50 A No circuit
19 PTC NO.2 50 A No circuit
20 PTC NO.1 50 A No circuit
21 HEAD MAIN 50 A H-LP LH, H-LP RH, H-LP LL,
H-LP RL fuses
22 RDI*
230 A
Electric cooling fan
FA N 2 *
150 A
FuseAmpereCircuit

408 4-3. Do-it-yourself maintenance
6 AM2-27.5 A Starting system
7 EFI NO.1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
8 EFI NO.2 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
9 EFI NO.3 7.5 A No circuit
10 GROW 80 A No circuit
11 EPMS 60 A Electric power steering system
12 MAIN 80 AHEAD MAIN, ECU-B2, ALT-S, STR
LOCK, DOME, ECU-B, RAD NO.1
fuses
13 ALT 120 A*
1ABS 1, ABS 2, RDI*3, CDS*3,
FA N 1 *4, AC INV, TOWING, HTR,
DEICER fuses
140 A*
2ABS 1, ABS 2, FAN 1, FAN 2, AC
INV, TOWING, HTR, DEICER fuses
14 P/I 50 A EFI MAIN, HORN, A/F, fuses
15 ABS2 30 A ABS, TRAC, VSC, AUTO LSD
function, downhill assist control
system, hill-start assist control sys-
tem
16 ABS1 50 A ABS, TRAC, VSC, AUTO LSD
function, downhill assist control
system, hill-start assist control sys-
tem
17 EFI MAIN 20 A Multiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.1, EFI NO.2, fuses
18 HORN 10 A Horn
19 EDU 25 A No circuit
FuseAmpereCircuit

410 4-3. Do-it-yourself maintenance
9 ACC7.5 AAudio system, power outlets,
power rear view mirror control,
automatic transmission shift lock
system, main body ECU, clock,
smart key system
10 MIR HTR 10 A Outside rear view mirror defoggers
11 PWR OUTLET 15 A Power outlet
12 RR FOG 10 A No circuit
13 IGN 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, steering lock system, front
passenger occupant classification
system, smart key system, SRS
airbag system
14 GAUGE 2 7.5 A Gauges and meters
15 S-HTR 15 A Seat heaters
16 FR WIP 25 A Windshield wipers
17 RR WIP 15 A Rear window wiper
18 WSH 15 AWindshield washer, rear window
washer
19 ECU IG 1 10 AElectric cooling fan, ABS, TRAC,
VSC, AUTO LSD function, downhill
assist control system, hill-start
assist control system, Active
Torque Control 4WD system, auto-
matic transmission shift lock sys-
tem, air conditioning system, main
body ECU, electric moon roof,
stop/tail lights, electric power steer-
ing system, clock, AC inverter, auto
anti-glare inside rear view mirror
20 ECU IG 2 10 AAir conditioning system, rear win-
dow defogger, emergency flashers
FuseAmpereCircuit

411
4-3. Do-it-yourself maintenance
4
Maintenance and care
*: Vehicles without smart key system
21 OBD
7.5 A On-board diagnosis system
22 STOP 10 AStop/tail lights, high mounted stop-
light, automatic transmission shift
lock system, multiport fuel injection
system/sequential multiport fuel
injection system, ABS, TRAC,
VSC, AUTO LSD function, downhill
assist control system, hill-start
assist control system
23 DOOR 25 AMain body ECU, power door lock
system
24 ACC-B 25 A ACC, CIG, fuses
25 4WD 7.5 A Active Torque Control 4WD system
26 FR FOG 15 A Front fog lights
27 AM1* 7.5 A Starting system
28 DEF 30 ARear window defogger, MIR HTR
fuse
29 P/SEAT 30 A Power seat
30 POWER 30 A Power windows
FuseAmpereCircuit

422 4-3. Do-it-yourself maintenance
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. 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.