2013 TOYOTA HIGHLANDER HYBRID ECU

489
4-2. Maintenance
4
Maintenance and care
Vehicle interior
ItemsCheck points
Accelerator pedal • Moves smoothly (without uneven
pedal effort or catching)?
Transmission “Park” mechanism • Can the vehicle be hold securely
on an incline with the shift lever in
P?
Brake pedal • Moves smoothly?
• Does it have appropriate clear-
ance and correct amount of free
play?
Brakes • Not pull to one side when
applied?
• Loss of brake effectiveness?
• Spongy feeling brake pedal?
• Pedal almost touches floor?
Head restraints • Move smoothly and lock
securely?
Indicators/buzzers • Function properly?
Lights • Do all the lights come on?
• Headlights aimed correctly?
Parking brake • Moves smoothly?
• Can hold the vehicle securely on
an incline?
Seat belts • Does the seat belt system oper-
ate smoothly?
• Are the belts undamaged?
Seats • Do the seat controls operate
properly?
Steering wheel • Moves smoothly?
• Has correct free play?
• No strange noises?

497
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.

501
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.

540 4-3. Do-it-yourself maintenance
4 HTR50 A Air conditioning system
5 FAN NO.1 50 A Electric cooling fan
6 FAN NO.2 50 A Electric cooling fan
7 ABS NO.1 50 A Brake system
8 RR CLR 40 A Air conditioning system
9 SPARE 40 A Spare fuse
10 RR DEF 30 A Rear window defogger
11 PBD 30 A Power back door
12 HV R/B NO.2 50 A ABS MAIN NO.1, ABS MAIN NO.2,
BATT FAN, OIL PMP
13 HV R/B NO.1 30 A Hybrid system, PCU, IGCT NO.2
IGCT NO.3, INV W/P
14 PD 50 AA/F, HORN, H-LP RH HI, H-LP LH
HI, H-LP RH LO, H-LP LH LO,
S-HORN
15 ABS NO.2 50 A Brake system
16 EPS 80 A Electric power steering
17 DC/DC 150 ARR DOOR RH, RR DOOR LH, FR
FOG, OBD, A/C W/PMP, STOP,
DOOR NO.2, AM1, P/SEAT(PS),
A/C NO.1, FUEL OPN, S/ROOF,
TAIL, PANEL, ECU IG NO.1, ECU
IG NO.2, A/C NO.2, WASH,
S-HTR, GAUGE NO.1, FR WIP,
RR WIP, ECU-ACC, ACC SOCK
NO.1, ACC SOCK NO.2, RADIO
NO.2, P/SEAT, POWER
18 EFI MAIN 30 AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.1, EFI NO.2, EFI
NO.3, F/PMP
19 TOWING 30 A Trailer lights
FuseAmpereCircuit

541
4-3. Do-it-yourself maintenance
4
Maintenance and care
20 ST
10 A Starting system
21 IG2 30 A INJ, GAUGE NO.2, IGN
22 STRG LOCK 20 A Steering lock system
23 RADIO NO.1 20 A Audio system
24 ABS MAIN
NO.3 15 AElectronically controlled brake sys-
tem
25 AMP 15 A Audio system
26 HAZ 15 A Turn signal lights
27 CAPACITER 15 A Brake system
28 G/H 10 AGlass hatch, multiplex communica-
tion system, outer foot lights
29 CRT 10 ARear seat entertainment system,
audio system
30 ETCS 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
31 AM2 7.5 A Multiplex communication system
32 ECU-B NO.2 7.5 A Air conditioning system
33 HV MAIN 10 A Hybrid system
34 DOME 10 AVanity lights, personal lights, inte-
rior light, gauges and meters, door
courtesy lights, engine switch light
35 ECU-B NO.1 10 A Steering sensor, gauges and
meters, main body ECU, wireless
remote control, smart key system,
power back door, on-board diagno-
sis system, multi-information dis-
play
36 EFI NO.1 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, smart key system
FuseAmpereCircuit

545
4-3. Do-it-yourself maintenance
4
Maintenance and care
11 P/SEAT (PS) 30 A Power seat
12 A/C NO.1 10 A Air conditioning system
13 FUEL OPN 7.5 A Fuel filler door opener
14 S/ROOF 20 A Electric moon roof
15 TAIL 15 A Side marker lights, tail lights,
license plate lights, fog lights, trailer
lights
16 PANEL 7.5 A Glove box light, instrument panel
lights, switch illumination
17 ECU IG NO.1 10 A Multiplex communication system,
electric moon roof, electronically
controlled transmission system,
power back door, seat heaters, tire
pressure warning system, electric
power steering, auto anti-glare
inside rear view mirror, shift lock
system
18 ECU IG NO.2 7.5 A Brake system
19 A/C NO.2 10 A Air conditioning system, electric
cooling fan
20 WASH 20 A Windshield and rear window
washer
21 S-HTR 20 A Seat heaters
22 GAUGE NO.1 10 A Audio system, back-up lights,
emergency flashers, traction con-
trol system, windshield wiper
deicer, rear view monitor system,
power outlet, air conditioning sys-
tem
23 FR WIP 30 A Windshield wipers and washer
24 RR WIP 15 A Rear window wiper and washer
FuseAmpereCircuit

546 4-3. Do-it-yourself maintenance
■Luggage compartment
25 IGN 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, steering lock system,
smart key system, SRS airbag sys-
tem, hybrid system, electronically
controlled brake system
26 GAUGE NO.2 7.5 A Gauges and meters, rear view
monitor system
27 ECU-ACC 7.5 A Outside rear view mirrors, shift lock
system, smart key system, multi-
plex communication system
28 ACC SOCK
NO.1 15 A Power outlet
29 ACC SOCK
NO.2 15 A Power outlet
30 RADIO NO.2 7.5 A Audio system, rear seat entertain-
ment system, interior lights, per-
sonal lights
FuseAmpereCircuit
1 DC/DC-S 7.5 A Hybrid system
2 MAIN 180 A All electrical components
FuseAmpereCircuit

555
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.