fuel TOYOTA YARIS 2012 Workshop Manual

528 4-3. Do-it-yourself maintenance
YARIS_F (including HV)_WE_52C79E
11 IG2 NO.2 10 ASmart entry & start system, push-
button start system, multiport fuel
injection system/sequential multi-
port fuel injection system, SRS air-
bag system, steering lock system,
stop lights
12 DOME 15 AAudio system, main body ECU,
personal lights, foot well lights
13 ECU-B NO.1 5 AMain body ECU, smart entry & start
system
14 METER 7.5 A Gauge and meters
15 IGN 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
16 H-LP RH-HI 5 A Right-hand headlight (high beam)
17 H-LP LH-HI 5 ALeft-hand headlight (high beam),
gauge and meters
18 D/L NO.2 25 A
Power door lock
19 HAZ 10 A Emergency flashers
20 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
21 ABS NO.1 20 A Brake system
22 ENG W/PMP 30 AMultiport fuel injection system/
sequential multiport fuel injection
system
23 H-LP-MAIN 20 AH-LP LH-LO, H-LP RH-LO, H-LP
LH-HI, H-LP RH-HI
24 ABS MTR NO.1 30 A Brake system
25 P/I 50 A EFI-MAIN, HORN, IG2
FuseAmpereCircuit

531 4-3. Do-it-yourself maintenance
4
Maintenance and care
YARIS_F (including HV)_WE_52C79EUnder the instrument panel
FuseAmpereCircuit
1 TAIL NO.2 10 A
Front position lights, tail lights,
license plate lights
2 PANEL 5 AInstrument panel lights, manual
headlight leveling dial, gauge and
meters
3 DOOR R/R 20 A Power window
4 DOOR P 20 A Power window
5 ECU-IG NO.1 5 ARear window defogger, main body
ECU, brake system, vehicle stabil-
ity control system, shift lock control
system, audio system, windshield
wipers
6 ECU-IG NO.2 5 A Electric power steering system
7 A/C 7.5 A Air conditioning system
8 GAUGE 10 ABack-up lights, shift lock control
system, rear seat belt reminder
lights, auto anti-glare inside rear
view mirror, hybrid transmission,
audio system, multiport fuel injec-
tion system/sequential multiport
fuel injection system, rain sensor
9 WASHER 15 A Windshield wipers and washer
10 WIPER 20 A Windshield wipers and washer
11 WIPER RR 15 A Rear window wiper

5When trouble arises
551
YARIS_F (including HV)_WE_52C79E
5-1. Essential information
Emergency flashers .......... 552
If your vehicle needs to
be towed ......................... 553
If you think something is
wrong .............................. 563
Fuel pump shut off system
(except hybrid vehicle
[gasoline engine only]).... 564
5-2. Steps to take in an
emergency
If a warning light turns on
or a warning buzzer
sounds... ........................ 565
If you have a flat tire
(vehicles with
a spare tire) .................... 582
If you have a flat tire
(vehicles with
an emergency tire
puncture repair kit).......... 594
If the engine will not start
(except hybrid vehicle).... 611
If the hybrid system will not
start (hybrid vehicle) ....... 614
If the shift lever cannot be
shifted from P (vehicles
with a hybrid transmission
or a Multidrive) ................ 616
If the shift lever cannot be
shifted (vehicles with
a multi-mode manual
transmission) .................. 617If you lose your keys ......... 618
If the electronic key does
not operate properly ....... 619
If the vehicle battery is
discharged
(except hybrid vehicle).... 624
If the vehicle’s 12-volt
battery is discharged
(hybrid vehicle) ............... 631
If your vehicle overheats
(except hybrid vehicle).... 635
If your vehicle overheats
(hybrid vehicle) ............... 639
If you run out of fuel and
the engine stalls
(diesel engine only) ........ 644
If the vehicle becomes
stuck ............................... 647
If your vehicle has to
be stopped in
an emergency ................. 650

564
5-1. Essential information
YARIS_F (including HV)_WE_52C79E
Fuel pump shut off system (except hybrid vehicle [gasoline engine only])
Follow the procedure below to restart the engine after the system is
activated.
Vehicles without a smart entry & start system:
Turn the engine switch to the “ACC” or “LOCK” position.
Restart the engine.
Vehicles with a smart entry & start system:
Turn the “ENGINE START STOP” switch to ACCESSORY mode
or turn it off.
Restart the engine.
NOTICE
Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been
damaged and is in need of repair. Do not restart the engine.
To minimize the risk of fuel leakage when the engine stalls or when
an airbag inflates upon collision, the fuel pump shut off system
stops the supply of fuel to the engine.

5
569 5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52C79E
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system.
Electric power steering warning light (warning buzzer)
Indicates a malfunction in the EPS system.
Slip indicator light (if equipped)
Indicates a malfunction in:
• The VSC system;
• The TRC system; or
• Hill-start assist control.
(yellow
indicator)Brake system warning light (hybrid vehicle)
Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system.
(Flashes or
yellow
indicator)Cruise control indicator light (if equipped)
Indicates a malfunction in the cruise control system.
• Except hybrid vehicle: The light flashes to indicate a mal-
function.
• Hybrid vehicle: The light comes in yellow to indicate a mal-
function.
(Flashes)Stop & Start cancel indicator light (if equipped)
Indicates a malfunction in the Stop & Start system.
Fuel filter warning light (diesel engine only)
Indicate that the amount of accumulated water in the fuel
filter has reached the specified level. (P. 486)
(Flashes in
yellow for 15
seconds.)Smart entry & start system indicator light (If equipped)
Indicates a malfunction in the smart entry & start system.
Low traction battery indicator light (hybrid vehicle)
Indicates that the hybrid battery (traction battery) is low.
Warning lightWarning light/Details

570 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79E
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning light goes off.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)*
1
Indicates that a door is not
fully closed.Check that all the doors are
closed.
Low fuel level warning
light
Except hybrid vehicle
Gasoline engine:
Indicates that remaining fuel
is about 5.8 L (1.5 gal., 1.3
Imp. gal.) or less.
Diesel engine:
Indicates that remaining fuel
is about 6.4 L (1.7 gal., 1.4
Imp. gal.) or less.
Hybrid vehicle
Indicates that remaining fuel
is about 5.2 L (1.4 gal., 1.1
Imp. gal.) or less.Refuel the vehicle.
(On the instru-
ment cluster)Driver’s and front passen-
ger’s seat belt reminder
light (warning buzzer)*
2
Warns the driver and front
passenger to fasten their
seat belts.Fasten the seat belt.
(On the center
panel)Rear passengers’ seat
belt reminder lights
(warning buzzer)*
2
(if equipped)
Warns the rear passen-
gers to fasten their seat
belts.Fasten the seat belt.

580 5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79E
Passenger detection sensor and passenger seat belt reminder
If luggage is placed on a passenger seat, the passenger detection sensor
may cause the warning light to flash even if a passenger is not sitting in
the seat.
If a cushion is placed on the seat, the sensor may not detect a passen-
ger, and the warning light may not operate properly.
Electric power steering warning light (warning buzzer)
Except hybrid vehicle: When the battery charge becomes insufficient or the
voltage temporarily drops, the electric power steering system warning light
may come on and the warning buzzer may sound.
Hybrid vehicle: When the 12-volt battery charge becomes insufficient or the
voltage temporarily drops, the electric power steering system warning light
may come on and the warning buzzer may sound.
If the malfunction indicator lamp comes on while driving
For some models, the malfunction indicator lamp will come on if the fuel tank
becomes completely empty. If the fuel tank is empty, refuel the vehicle
immediately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped profes-
sional as soon as possible.
If the engine oil change reminder light flashes (diesel engine with a
DPF system)
Repeated short trips and/or low-speed driving may cause the oil to degrade
sooner than usual, regardless of the actual distance driven. If this happens,
the engine oil change reminder light will flash.
Engine oil change reminder light comes on (diesel engine only)
Vehicles without a DPF system:
Replace the engine oil and oil filter when the engine oil change reminder
light does not come on even if you have driven over 40000 km (25000 miles)
after the engine oil was changed.
There is a possibility that the engine oil change reminder light has been illu-
minated when you have driven less than 40000 km (25000 miles) based on
a usage or driving condition.

5
581 5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52C79E
Vehicles with a DPF system:
Replace the engine oil and oil filter when the engine oil change reminder
light does not come on even if you have driven over 15000 km (9300 miles)
after the engine oil was changed.
There is a possibility that the engine oil change reminder light has been illu-
minated when you have driven less than 15000 km (9300 miles) based on a
usage or driving condition.
CAUTION
When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.
When driving to clean the DPF catalytic converter
When driving, pay sufficient attention to weather, road conditions, terrain and
traffic conditions, and be sure to observe traffic laws and/or regulations. Fail-
ure to do so may cause an unexpected accident, resulting in death or seri-
ous injury.
NOTICE
If the fuel filter warning light comes on (diesel engine only)
Never drive the vehicle with the warning light on. Continued driving with
water accumulated in the fuel filter will damage the fuel injection pump.
When the DPF system warning light comes on (diesel engine with a
DPF system)
If the DPF system warning light is left on without performing cleaning, after
an additional 100 to 300 km (62 to 187 miles), the malfunction indicator lamp
may come on. If this happens, have the vehicle inspected by any authorized
Toyota dealer or repairer, or another duly qualified and equipped profes-
sional immediately.

5
611
5-2. Steps to take in an emergency
When trouble arises
YARIS_F (including HV)_WE_52C79E
If the engine will not start (except hybrid vehicle)
If the engine will not start even though correct starting procedures
are being followed (P. 224, 228), consider each of the following
points:
The engine will not start even though the starter motor
operates normally.
One of the following may be the cause of the problem:
There may not be sufficient fuel in the vehicle’s tank.
Gasoline engine: Refuel the vehicle.
Diesel engine: (P. 644)
The engine may be flooded. (gasoline engine)
Try to restart the engine again following correct starting proce-
dures. (P. 224, 228)
There may be a malfunction in the engine immobilizer system.
(P. 155)
The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem:
The battery may be discharged. (P. 624)
The battery terminal connections may be loose or corroded.
The starter motor does not turn over. (vehicles with a smart
entry & start system)
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine.
(P. 612)

614
5-2. Steps to take in an emergency
YARIS_F (including HV)_WE_52C79E
If the hybrid system will not start (hybrid vehicle)
Reasons for the hybrid system not starting vary depending on the
situation. Check the following and perform the appropriate proce-
dure:
The hybrid system will not start even though the correct
starting procedure is being followed. (P. 238, 243)
One of the following may be the cause of the problem:
Vehicles with an electronic key: The electronic key may not be
functioning properly. (P. 619)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. (P. 151)
There may be a malfunction in the immobilizer system.
(P. 155)
There may be a malfunction in the steering lock system.
The hybrid system may be malfunctioning due to an electrical
problem such as an open circuit or a blown fuse. However,
depending on the type of malfunction, an interim measure is
available to start the hybrid system. (P. 615)
The interior lights and headlights are dim, or the horn does
not sound or sounds at a low volume.
One of the following may be the cause of the problem:
The 12-volt battery may be discharged. (P. 631)
The 12-volt battery terminal connections may be loose or cor-
roded.