2009 TOYOTA RAV4 ECU

395
4-3. Do-it-yourself maintenance
4
Maintenance and care
6 AM2-2
7.5 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 A“HEAD MAIN”, “ECU-B2”, “ALT-S”,
“STR LOCK”, “DOME”, “ECU-B”,
“RAD NO.1” fuses
13 ALT 120 A
*1“ABS 1”, “ABS 2”, “RDI”*3, “CDS”*3,
“FAN 1”*4, “AC INV”, “TOWING”,
“HTR”, “DEICER” fuses
140 A
*2“ABS 1”, “ABS 2”, “FAN1”, “FAN2”,
“AC INV”, “TOWING”, “HTR”,
“DEICER” fuses
14 P/I 50 A “EFI MAIN”, “HORN”, “A/F”, fuses
15 ABS2 30 A ABS, TRAC, Enhanced VSC,
“AUTO LSD” function, downhill
assist control system, hill-start
assist control system
16 ABS1 50 A ABS, TRAC, Enhanced VSC,
“AUTO LSD” function, downhill
assist control system, hill-start
assist control system
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
FuseAmpereCircuit

397
4-3. Do-it-yourself maintenance
4
Maintenance and care
9 ACC
7.5 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,
Enhanced VSC, “AUTO LSD” func-
tion, downhill assist control system,
hill-start assist control system,
active torque control 4WD system,
automatic transmission shift lock
system, air conditioning system,
main body ECU, electric moon
roof, stop/tail lights, electric power
steering system, clock, AC inverter,
auto anti-glare inside rear view mir-
ror
20 ECU IG 2 10 AAir conditioning system, rear win-
dow defogger, emergency flashers
FuseAmpereCircuit

398 4-3. Do-it-yourself maintenance
*: Vehicles without smart key system
21 OBD7.5 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,
Enhanced VSC, “AUTO LSD” sys-
tem, 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

408 4-3. Do-it-yourself maintenance
■Condensation build-up on th e inside of the lens
Contact your Toyota dealer 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 are built up on the inside of the lens.
● Water has built up inside the headlight.
■ LED side turn signal lights, stop/tail lights and high mounted stoplight
The side turn signal lights (if equipped), stop/tail lights and high mounted
stoplight consists of a number of LEDs. If any of the LEDs burn out, take
your vehicle to your Toyota dealer to have the light replaced.
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.

5
When trouble arises
411
5-1. Essential information
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Contact
your Toyota dealer before towing.
● The engine is running, but the vehicle will not move.
● The vehicle makes an abnormal sound.
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. 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.
Towing eyelet
If towing is necessary, we recommend having your vehicle towed by
your Toyota dealer or a commerci al towing service, using a lift-type
truck or a flat bed truck.
Use a safety chain system for all to wing, and abide by all state/pro-
vincial and local laws.
2WD models: If towing from the fr ont, the vehicle's rear wheels and
axles must be in good conditions. (P. 415)
If they are damaged, use a towing dolly or flat bed truck.

5
When trouble arises
413
5-1. Essential information
Installing towing eyelet
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.
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.
STEP 1
STEP 2
STEP 3
■Location of the emer gency towing eyelet
P. 434

414 5-1. Essential information
CAUTION
■Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing. This
may lead to accidents that cause serious injury or even death.

5
When trouble arises
429
5-2. Steps to take in an emergency
■
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.
■ Front passenger detection sensor and passenger seat belt reminder
● If luggage is placed on the front passenger seat, the front passenger
detection sensor may cause the warning light to flash, even if a passen-
ger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
■ Changing the engine oil (U.S.A. only)
Make sure to reset the oil change system. ( P. 358)
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level.
Pushing the tire pressure warning reset switch does not turn off the tire
pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such
as natural air leaks or tire inflation pressure changes caused by temper-
ature. In this case, adjusting the ti re inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a spare tire (vehicles with a tire pres-
sure warning system)
The spare tire is also equipped with the tire pressure warning valve and
transmitter. The tire pressure warning li ght will turn on if the tire inflation
pressure of the spare tire is low. If a tire goes flat, even though the flat
tire is replaced with the spare tire, the tire pressure warning light does
not turn off. Replace the spare tire with the repaired tire and adjust the
proper tire inflation pressure. The ti re pressure warning light will turn off
after a few minutes.