2012 TOYOTA PRIUS PHV fuel

438
4-2. Maintenance
PRIUS PHV_OM_OM47818U_(U)
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system moni-
tors the operation of th e emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere
in the emission control system. Your vehicle may not pass the I/
M test and may need to be repaired. Contact your Toyota dealer
to service the vehicle.
■ Your vehicle may not pass the I/M test in the following situa-
tions:
●When the 12-volt battery is disconnected or discharged
Readiness codes that are se t during ordinary driving are
erased.
Also, depending on your driving habits, the readiness codes
may not be completely set.
● When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a tempo-
rary malfunction and your vehi cle may not pass the I/M test.
■ When the malfunction indicator lamp still remains on after
several driving trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.

441
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■
When working on the engine compartment
● Make sure that the indicator on the “POWER” switch and the “READY”
indicator are both off.
● Keep hands, clothing and tools away from the moving fan.
● Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
■ When working near the electric c ooling fans or radiator grille
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. ( P. 466)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

488 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
■Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least
once a month.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure ma y result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent inflating, have it checked by your Toyota dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours or has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.
●Always use a tire pressure gauge.
The appearance of the tire can be mi sleading. In addition, tire infla-
tion pressure that is even just a few pounds off can affect ride quality
and handling.
●Do not reduce tire inflation pressure after driving. It is normal for tire
inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle
is balanced.

498 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
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 FUEL OPN 7.5A Fuel filler door opener
5 S-HORN 10A No circuit
6 ENG W/P 30A Cooling system
7 ABS MAIN
NO.2 7.5A Anti-lock brake system
8 H-LP CLN 30A Headlight cleaner
9 P-CON MTR 30A P position control system, trans-
mission
10 AMP NO.1 30A Audio system

499
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
FUSEAmpereCircuit
11 IGCT 30A PCU, IGCT NO.2, IGCT NO.3
12 DC/DC-S 5A Inverter and converter
13 P CON MAIN 7.5A P position control system, P posi-
tion switch
14 AM2 7.5A Power management system
15 ECU-B2 7.5A Smart key system, hybrid system
16 MAYDAY/DCM 10A MAYDAY/DCM
17 PIMR 10A Charge system
18 TURN & HAZ 10A Turn signal lights
19 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
20 ABS MAIN
NO.1 20A Anti-lock brake system
21 H-LP LH LO 15A Left-hand headlight (low beam)
22 P/I 2 40AP position control system, horn,
headlight low beams, back-up
lights
23 ABS MTR 1 30A Anti-lock brake system
24 ABS MTR 2 30A Anti-lock brake system
25 H-LP HI MAIN 20A Headlight high beams, daytime
running lights
26 DRL 7.5A Daytime running lights
27 AMP NO.2 30A Audio system, navigation system
28 P/I 1 60A IG2, EFI MAIN, BATT FAN
29 EPS 60A Electric power steering

500 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
FUSEAmpereCircuit
30 H-LP RH LO 15A Right-hand headlight (low beam)
31 PCU 10A Inverter and converter
32 IGCT NO.2 10A Hybrid system, P position control
system, power management sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel
injection system
33 MIR HTR 10A Outside rear view mirror defoggers
34 RAD NO.1 15A Audio system, navigation system
35 DOME 10ADoor courtesy lights, luggage
compartment light, personal light,
interior light, foot lights, vanity
lights, inside rear view mirror,
garage door opener
36 ECU-B 7.5ASmart key system, personal lights,
gauges and meters
37 H-LP LH HI 10A Left-hand headlight (high beam)
38 H-LP RH HI 10A Right-hand headlight (high beam)
39 EFI NO.2 10AMultiport fuel injection system/
sequential multiport fuel injection
system
40 IGCT NO.3 10A Cooling system
41 SPARE 30A Spare fuse
42 SPARE 10A Spare fuse

501
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
FUSEAmpereCircuit
43 SPARE 7.5A Spare fuse
44 EFI MAIN 20A Multiport fuel injection system/
sequential multiport fuel injection
system, cooling system, EFI NO.2
45 BATT FAN 20A Battery cooling fan
46 IG2 20A Multiport fuel injection system/
sequential multiport fuel injection
system, MET, IGN, power man-
agement system

504 4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
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, front passenger occupant
classification system (ECU and
sensors), power management sys-
tem, smart key system, front pas-
senger’s seat belt reminder light
29 PANEL 10AAir conditioning system, personal
light, transmission, P position
switch, navigation system, Remote
Air Conditioning System, headlight
cleaner, front passenger’s seat
belt reminder light, headlight level-
ing system, glove box light, clock,
audio system, MPH or km/h switch
30 TAIL 10AHeadlight leveling system, park-
ing lights, tail lights, license plate
lights, front fog lights, side marker
lights