2012 TOYOTA SIENNA Owners Manual

697
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
After a system failure, see “Fuse layout and amperage rat-
ings” (
P. 699) for details about which fuse to check.
Take out the pullout tool.
Only type A fuses can be
removed using the pullout tool.
Check if the fuse has blown.
Ty p e A Normal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
Ty p e BNormal fuse
Blown fuse
Replace the blown fuse with a
new fuse of an appropriate
amperage rating. The amper-
age rating can be found on the
fuse box lid.
STEP3
STEP4
STEP5
12
ITY42C012
12
ITY42C013

698 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
Ty p e CNormal fuse
Blown fuse
Contact your Toyota dealer.
Ty p e DNormal fuse
Blown fuse
Contact your Toyota dealer.
Ty p e ENormal fuse
Blown fuse
Contact your Toyota dealer.

699
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
Fuse layout and amperage ratings
■ Engine compartment
FuseAmpereCircuit
1H-LP LVL
*17.5 A Headlight leveling system
2DSS1 7.5 A PCS (Pre-collision system),
dynamic radar cruise control sys-
tem
3 ST NO.2 7.5 A Starting system, multiport fuel
injection system/sequential multi-
port fuel injection system
4H-LP LH
*120 A Left-hand headlight (low beam)
5H-LP RH
*120 A Right-hand headlight (low beam)

700 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
FuseAmpereCircuit
6 ECT 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system, automatic transaxle
7 EFI NO.2 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
8 H-LP RH HI 10 A Right-hand headlight (high beam)
9 H-LP LH HI 10 A Left-hand headlight (high beam)
10 SPARE 10 A Spare-fuse 11 SPARE 15 A Spare-fuse
12 SPARE 20 A Spare-fuse
13 MG CLT 7.5 A A/C magnetic clutch
14 INV 20 A Inverter
15 PTC HTR
NO.1
*250 A PTC heater
16 PTC HTR
NO.2
*230 A PTC heater
17 PTC HTR
NO.3
*230 A PTC heater
18 A/C RR 40 A Rear air conditioning system
19 PBD 30 A Power back door
20 FOLD SEAT
*330 A Power third seat
21 HTR 50 A Air conditioning system
22 PSB
*330 A Pre-collision seat belt
23 A/A SEAT 30 A AUTO ACCESS SEAT

701
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
FuseAmpereCircuit
24 FAN 60 A Electric cooling fans
25 HAZ 15 A Turn signal lights, gauges and
meters
26 RSE 15 A Rear seat entertainment system
27 MIRROR
*310 A Outside rear view mirror control,
outside rear view mirror heaters
28 AMP 30 A Audio system
29 VSC NO.2 30 A Vehicle dynamics integrated man-
agement, ABS, vehicle stability
control
30 ST 30 A Starting system
31 P/I 40 A Horn, left-hand headlight (low
beam), right-hand headlight (low
beam)
32 H-LP MAIN
*140 A Discharge headlight
SPARE
*430 A Spare-fuse
33 AM2
*530 A “ST NO.2”, “GAUGE NO.2” and
“IG2” fuses
34 VSC NO.1 50 A Vehicle dynamics integrated man-
agement, ABS, vehicle stability
control

702 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
FuseAmpereCircuit
35 ALT 140 A Charging system, horn, left-hand
headlight (low beam), right-hand
headlight (low beam), fog light, out-
side rear view mirror heaters, rear
window defoggers, windshield
wiper de-icer
36 RAD NO.1 15 A Audio system
37 DOME 7.5 A Vanity lights, personal/interior
lights, personal lights, engine
switch light, rear ceiling lights, door
courtesy lights, luggage compart-
ment light, gauges and meters,
clock
38 ECU-B 10 A Main body ECU, smart key system,
wireless remote control, power
back door, power sliding door, rear
view monitor, multi information dis-
play, power window, outside rear
view mirror control, steering angle
sensor, auto-anti glare inside rear
view mirror, AUTO ACCESS SEAT
remote control, front passenger
occupant classification system
39 ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection
system
40 A/F 20 A Multiport fuel injection system/
sequential multiport fuel injection
system
41 STRG LOCK
*620 A Steering lock system
42 ALT-S 7.5 A Charging system

703
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
*1: Vehicles with discharge headlights only
*2: Vehicles with a 1AR-FE engine only
*3: Vehicles with a 2GR-FE engine only
*4: Vehicles without discharge headlights only
*5: Vehicles without a smart key system only
*6: Vehicles with a smart key system only
FuseAmpereCircuit
43 INJ 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, “IG NO.2” and “IG2” fuses
44 ECU-B NO.2 7.5 A Air conditioning system
45 AM2 NO.2
*67.5 A Multiplex communication system,
starting system
46 EFI NO.1 25 A Multiport fuel injection system/
sequential multiport fuel injection
system, “ECT” and “EFI NO.2”
fuses
47 SMART
*65 A Smart key system
48 DRL 30 A Daytime running light system, “H-
LP LH (HI)” and “H-LP RH (HI)”
fuses
49 EPS 60 A Electric power steering

704 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)■
Under the driver’s side instrument panel
FuseAmpereCircuit
1P/OUTLET15 APower outlets
2 RAD NO.2 7.5 A Audio system, navigation system,
rear seat entertainment system
3 ECU-ACC 10 A Main body ECU, clock, shift lock
system, power rear view mirror
control, multiplex communication
system
4 CIG 15 A Power outlets
5 GAUGE NO.1 10 A Emergency flashers, back up
lights, navigation system, multi
information display, automatic tran-
saxle, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, charging system