2010 TOYOTA PRIUS air conditioning

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
■
Checking interval
Inspect, clean and replace the air conditioning filter according to the mainte-
nance schedule. In dusty areas or areas with heavy traffic flow, early
replacement may be required. (For scheduled maintenance information,
refer to the “Owner’s Manual Supplement/Scheduled Maintenance Guide”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
NOTICE
■To prevent damage to the system
● When using the air conditioning system, make sure that a filter is always
installed.
● When cleaning the filter, do not clean the filter with water.
■ Replacement method
Replace the air conditioning
filter with a new one.
The “UP” marks shown on
the filter should be pointing up.
ITO43P125

462
4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the “POWER” switch OFF. 
Vehicles with Solar Ventilation System: Turn the Solar Ven-
tilation System off and make sure not to operate the
Remote Air Conditioning System.
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.
Left side instrument panel Remove the lid.STEP1
STEP2
ITO43P127
ITO43P129

465
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
Fuse layout and amperage ratings
■ Engine compartment
FUSEAmpereCircuit
1 HTR 50A Air conditioning system
2 RDI 30A Electric cooling fans
3 CDS 30A Electric cooling fans
4 S-HORN 10A No circuit
5 ENG W/P 30A Cooling system
6 ABS MAIN
NO.2 7.5A Anti-lock brake system
7 H-LP CLN 30A Headlight cleaner
8 AMP 30A Audio system
9 IGCT 30A PCU, IGCT NO.2, IGCT NO.3
10 DC/DC-S 5A Inverter and converter
11 P CON MAIN 7.5A Parking control system, transmis-
sion
ITO43P132
1
2
3
456 7
891011 12
13 14
15 16
17 18
19 20 21 22
2324
25 26 27 28 29 30 31 32 33 34
35 36 37 38 39 40

466 4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.
FUSEAmpereCircuit
12 AM2 7.5A Power windows
13 ECU-B2 7.5A Smart key system
14 MAYDAY 10A No circuit
15 ECU-B3 10A Air conditioning system
16 TURN & HAZ 10A Turn signal lights
17 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
18 ABS MAIN
NO.1 20A Anti-lock brake system
19 P/I 2 40AParking control system, horn,
right-hand headlight (low beam),
left-hand headlight (low beam),
back-up lights
20 ABS MTR 1 30A Anti-lock brake system
21 ABS MTR 2 30A Anti-lock brake system
22 H-LP HI MAIN 20A H-LP HI RH, H-LP HI LH,
headlight switch, daytime running
light system
23 P/I 1 60A IG2, EFI MAIN, BATT FAN
24 EPS 60A Electric power steering
25 PCU 10A Inverter and converter
26 IGCT NO.2 10A Hybrid system, parking control
system, power windows, inverter
and converter

469
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
FUSEAmpereCircuit
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A Electric moon roof
20 ECU-IG NO.1 10A Electric cooling fans, multiplex
communication system
21 ECU-IG NO.2 10A Driver support system, Pre-Colli-
sion System, LKA system, inside
rear view mirror, garage door
opener, yaw rate & G sensor,
brake system, electric power
steering, navigation system, elec-
tric moon roof, tire pressure warn-
ing system, seat belt
pretensioners, audio system,
emergency flashers, turn signal
lights, windshield wipers, headlight
cleaner
22 GAUGE 10A Headlight leveling system, front
passenger’s seat belt reminder
light, gauges and meters
23 A/C 10A Air conditioning system, Solar
Ventilation System, Remote Air
Conditioning System
24 WASHER 15A Windshield washer

470 4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.
FUSEAmpereCircuit
25 RR WIP 20A Rear window wiper and washer
26 WIP 30A Windshield wipers
27 MET 7.5A Gauges and meters
28 IGN 10ABrake system, driver support sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, SRS airbag sys-
tem, occupant detection sensor,
power windows, smart key system
29 PANEL 10AAir conditioning system, emer-
gency flashers, seat heaters,
transmission, “P” position switch,
navigation system, Solar Ventila-
tion System, Remote Air Condi-
tioning System, advanced parking
guidance system, headlight
cleaner, front passenger’s seat
belt reminder light, headlight level-
ing system, glove box light, clock,
audio system
30 TAIL 10AHeadlight leveling system, park-
ing lights, tail lights, license plate
lights, front fog lights, side marker
lights

579
6-1. Specifications
6
Vehicle specifications
PRIUS_U (OM47668U) U.S.A.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation 
pressure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated
pressure to which a
tire may be inflated, s hown on the sidewall of
the tire
Recommended 
inflation pressure Cold tire inflation pressure recommended by a
manufacturer.
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of trans-
mission, power steering, power brakes, power
windows, power seats, radio and heater, to the
extent that these items
are available as factory-
installed equipment (whether installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded 
vehicle weight The sum of:

(a) Curb weight 
(b) Accessory weight 
(c) Vehicle capacity weight 
(d) Production options weight

600
PRIUS_U (OM47668U) U.S.A.
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
A/C Air Conditioning
ABS Anti-lock Brake System
ALR Automatic Locking Retractor
APGS Advanced Parking Guidance System
CRS Child Restraint System
ECU Electronic Control Unit
EDR Event Data Recorder
ELR Emergency Locking Retractor
EPS Electronic Power Steering
EV Electric Vehicle
GAWR Gross Axle Weight Ratings
I/M Emission inspection and maintenance
LATCH Lower Anchors and Tethers for Children
LED Light Emitting Diode
MMT Methylcy clopentadienyl Manganese Tricarbonyl
M + S Mud and Snow
MTBE Methyl Tertiary Butyl Ether
OBD On Board Diagnostics
PCS Pre-Collision System
SRS Supplemental Restraint System
TIN Tire Identification Number
TPMS Tire Pressure Monitoring (Warning) System
TRAC Traction Control
VIN Vehicle Identification Number
VSC Vehicle Stability Control