2008 TOYOTA AVALON Owners Manual

4
Maintenance and care
345
4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
Remove the fuse with the pull-
out tool.
Check if the fuse has blown.
Ty p e A
Normal fuse
Blown fuse
Replace it with one of an
appropriate amperage rating.
The amperage rating can be
found on the fuse box lid.
Ty p e BNormal fuse
Blown fuse
Replace it with one of an
appropriate amperage rating.
The amperage rating can be
found on the fuse box lid.
ITN43A044
STEP4
STEP5

346 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1 RR DEF 50 A Rear window defogger, outside
rear view mirror defogger
2 ABS/VSC No.2 30 A Anti-lock brake system, vehicle
stability control system
3 RDI FAN 50 A Electric cooling fan
4 ABS/VSC No.1 50 A Anti-lock brake system, vehicle
stability control system
5 HEATER 50 A Air conditioning system
6 ST/AM2 30 A Starter system
7 MAIN 40 A Headlights

4
Maintenance and care
347
4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
FuseAmpereCircuit
8ALT 140 A
(Limited
grade)120 A
(XL, XLS grade) Charging system, RR DEF, ABS/
VSC No.2, HEATER, ABS/VSC
No.1, RDI FAN, WASHER,

S-HORN
9 STOP No.3 7.5 A Electronic controlled transmission
system, multiport fuel injection
system/sequential multiport fuel
injection system
10 INJ 15 A Multiport fuel injection system/
sequential multiport fuel injection
system
11 AM2 7.5 A Starter system
12 DOOR No.1 25 A Multiplex communication system
13 ALT-S 7.5 A Charging system
14 ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
15 IG2 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, electronic controlled
transmission system
16 TURN/HAZ 15 A Turn signal lights
17 AMP 30 A Audio system
18 FEI No.3 7.5 A Smart key system, electronic con-
trolled transmission system, immo-
bilizer system
19 STR LOCK 25 A Steering lock system
20 STOP No.1 15 A Multiplex communication system

348 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
FuseAmpereCircuit
21 EFI No.1 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, fuel pump
22 HORN 10 A Horn
23 HEAD LH UPR 15 A Left-hand headlight (high beam)
24 HEAD RH UPR 15 A Right-hand headlight (high beam)
25 A/F 25 A Air fuel ratio sensor
26 WASHER 20 A Windshield washer
27 S-HORN 7.5 A Horn
28 DOME 7.5 A Gauges and meters, clock, front
personal lights, door courtesy
lights, garage door opener, rear
personal lights, trunk light
29 ECU-B 10 A Center display, multiplex

communication system
30 RAD No.1 15 A Audio system, center display,

navigation system
31 EFI No.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
32 STOP No.2 7.5 A Stop lights, high mounted

stoplight, vehicle stability control
system, anti-lock brake system
33 RADAR CC 7.5 A Vehicle stability control system
34 HEAD RH LWR 15 A Right-hand headlight (low beam)
35 HEAD LH LWR 15 A Left-hand headlight (low beam)

4
Maintenance and care
349
4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
■
Driver’s side instrument panel
FuseAmpereCircuit
1RR DOOR25 APower window
2RL DOOR25 APower window
3FR DOOR25 APower window, driving position
memory system
4FOG15 AFront fog lights
5OBD7.5 AOn-board diagnosis system
6MPX-B7.5 AMultiplex communication system
7P/W25 APower window, driving position
memory system
8FUEL OPN7.5 AFuel filler door opener
9AM17.5 A
Multiport fuel injection system/
sequential multiport fuel injection
system, starting system, ignition
system
10A/C7.5 AAir conditioning system
123456789101211131415
1617181920212223242526272829
ITN43A016

350 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
FuseAmpereCircuit
11S-HTR20 AAir conditioning system
12DOOR No.225 AMultiplex communication system
13S/ROOF30 AMoon roof
14TA I L10 A
Parking lights, license plate lights,
tail lights, front and rear side
marker lights
15PA N E L7.5 A
Seat heaters, navigation system,
emergency flashers, 
electronically controlled 
automatic transmission system,
glove box light, instrument panel
lights, power outlets
16ECU IG No.110 A
Center display, shift lock control
system, moon roof, multiplex 
communication system, tire pres-
sure monitoring (warning) system
17ECU IG No.210 A
Anti-lock brake system, dynamic
laser cruise control system, 
automatic headlight leveling 
system, vehicle stability control
system, multiplex 
communication system
18HTR7.5 A
Air conditioning system, 
instrument panel lights, electric
cooling fan
19A/C COMP7.5 AAir conditioning system
20GAUGE No.110 ABack-up lights, navigation 
system, emergency flashers
21WIP30 AWindshield wipers
22RR S/SHADE10 ARear sunshade

4
Maintenance and care
351
4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
FuseAmpereCircuit
23IGN10 A
Multiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, front
passenger occupant

classification system, smart key
system, starting system, electronic
controlled transmission system
24GAUGE No.27.5 AGauges and meters, center 
display
25ECU-ACC7.5 A
Power rear view mirrors, center
display, shift lock system, 
multiplex communication system
26CIG15 A
27PWR OUTLET15 APower outlets
28RADIO No.27.5 AAudio system, navigation system
29MIR HTR10 AOutside rear view mirror 
defoggers

352 4-3. Do-it-yourself maintenance
AVALON_U_(L/O_0802)
■After a fuse is replaced
● If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. (P. 355)
● If the replaced fuse blows again, have the vehicle inspected by your Toy-
ota dealer.
■ If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions. 
Failing to do so may cause damage, and possibly a fire or injury.
● Never use a fuse of a higher amperage rating than indicated, or use any
other object in place of a fuse.
● Always use a genuine Toyota fuse or equivalent. 
Never replace a fuse with a wire, even as a temporary fix. 
This can cause extensive damage or even fire.
● Do not modify fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Toy-
ota dealer.