Page 388 of 504
3887-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E 
■Engine compartment
Fuse layout and amperage ratings
FuseAmpereCircuit
1H-LP RH-LO10Right-hand headlight (low beam)
2H-LP LH-LO10Left-hand headlight (low beam), manual 
headlight leveling dial
3H-LP RH-HI7.5Right-hand headlight (high beam)
4H-LP LH-HI7.5Left-hand headlight (high beam), gauges
and meters
5A/C COMP7.5Air conditioning system
6IG2 NO.37.5
Multiport fuel injection system/sequential 
multiport fuel injection system, stop 
lights, high mounted stoplight
7DOME5Interior light, luggage compartment light
8HAZ10Turn signal lights, emergency flashers, 
gauges and meters
9HORN10Horn
10D/C CUT30ECU-B NO.1, ECU-B NO.2, ECU-B NO.3 
         
        
        
     
        
        Page 389 of 504
3897-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E
11ECU-B NO.4*17.5Multi-mode manual transmission
12AM2 NO.27.5Multiport fuel injection system/sequential 
multiport fuel injection system
13AM2 NO.37.5Smart entry & start system
14ICS*27.5Charging system
15ST30Starting system
16STRG LOCK7.5Steering lock system
17H-LP-MAIN25H-LP RH-LO, H-LP LH-LO, H-LP RH-HI,
H-LP LH-HI
18WIPER-S*27.5Multiport fuel injection system/sequential
multiport fuel injection system
19STA7.5
Multiport fuel injection system/sequential
multiport fuel injection system, starting 
system, multi-mode manual transmis- 
sion, Stop & Start system
20ECU-B NO.315Audio system, smart entry & start system
21ECU-B NO.17.5Gauges and meters
22ECU-B NO.27.5Vehicle stability control system
23J/B60Instrument fuse box
24ALT125
DEF, S/HTR F/R, S/HTR F/L, CANVAS
TOP, ABS NO.1, ABS NO.2, RDI NO.1, 
FOG FR, DRL
25AMT*150Multi-mode manual transmission
BBC*240Stop & Start system
FuseAmpereCircuit 
         
        
        
     
        
        Page 390 of 504
3907-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
*1: Vehicles with a multi-mode manual transmission
*2: Vehicles with a Stop & Start system
*3: Replace the fuse with one of the same ampere rating as the original
26EPS50Electric power steering system
27RDI NO.130*3
Electric cooling fan40*3
28ABS NO.150Anti-lock brake system, vehicle stability 
control system
29SPARE10Spare fuse
30SPARE20Spare fuse
31SPARE30Spare fuse
32DEF20Rear window defogger, outside rear view
mirror defoggers
33ABS NO.230Anti-lock brake system, vehicle stability 
control system
34FOG FR7.5Front fog lights, gauges and meters
35DRL7.5Daytime running lights
36S/HTR F/R15Seat heaters (right side)
37CANVAS TOP20Canvas top
38S/HTR F/L15Seat heaters (left side)
FuseAmpereCircuit 
         
        
        
     
        
        Page 391 of 504
3917-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E 
■Driver ’s side instrument panel
FuseAmpereCircuit
1IG1 NO.25
Back-up light, multiport fuel injection sys- 
tem/sequential multiport fuel injection
system, audio system, vehicle stability 
control system
2WASHER15Windshield washer, rear window washer
3ECU-IG NO.15
Main body ECU, gauges and meters, air 
conditioning system, rear window defog-
ger, outside rear view mirror defoggers, 
seat heaters, canvas top, audio system, 
PCS system
4ECU-IG NO.25Electric power steering system, Stop & 
Start system
5WIPER RR15Rear window wiper
6IG1 NO.15Electric cooling fan, anti-lock brake sys- 
tem, vehicle stability control system
7WIPER25Windshield wiper
8MIR HTR10Outside rear view mirror defoggers
9P/OUTLET15Power outlet
10ECU-ACC7.5Outside rear view mirrors, audio system,
Stop & Start system, gauges and meters 
         
        
        
     
        
        Page 392 of 504

3927-3. Do-it-yourself maintenance
AYGO_OM_Europe_OM99R19E
11IG2 NO.25
Steering lock system, multiport fuel injec- 
tion system/sequential multiport fuel 
injection system, multi-mode manual 
transmission
12A/BAG7.5SRS airbag system
13METER5Gauges and meters, Stop & Start system
14IG2 NO.115Multiport fuel injection system/sequential 
multiport fuel injection system, stop lights
15EFI NO.17.5
Multiport fuel injection system/sequential 
multiport fuel injection system, Stop &
Start system
16OBD7.5On-board diagnosis system
17STOP10
Stop lights, high mounted stoplight, multi-
port fuel injection system/sequential mul- 
tiport fuel injection system, anti-lock 
brake system, vehicle stability control
system, multi-mode manual transmis- 
sion, smart entry & start system
18TA I L10
Position lights, license plate lights, rear 
fog light, front fog lights, tail lights, switch
illumination, multiport fuel injection sys- 
tem/sequential multiport fuel injection 
system, gauges and meters, audio sys-
tem
19HTR40Air conditioning system
20AM140HTR, OBD, A/C, TAIL, FOG RR, STOP,
P/W, DOOR F/L, DOOR F/R
21AM2 NO.130EFI NO.2, EFI-MAIN, D/L
22EFI NO.27.5Multiport fuel injection system/sequential 
multiport fuel injection system
23EFI-MAIN20
EFI NO.1, multiport fuel injection system/ 
sequential multiport fuel injection system, 
fuel pump
24D/L25Main body ECU, door lock system
25P/W30Power windows
FuseAmpereCircuit 
         
        
        
     
        
        Page 393 of 504

3937-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM99R19E
*1: Left-hand drive vehicles
*2: Right-hand drive vehicles
■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. 394) 
● If the replaced fuse blows again, have the vehicle inspected by any autho- 
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer. 
■ If there is an overload in a circuit 
The fuses are designed to blow, protecting the wiring harness from damage.
26DOOR F/R*1
25Power windowsDOOR F/L*2
27A/C10Air conditioning system
28FOG RR5Rear fog light
WARNING
■ To prevent system breakdowns and vehicle fire 
Observe the following precautions. 
Failure to do so may cause damage to the vehicle, and possibly a fire or 
injury. 
● Never use a fuse of a higher amperage rating than that 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. 
● Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses 
Have the cause of electrical overload determined and repaired by any 
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer as soon as possible.
FuseAmpereCircuit 
         
        
        
     
        
        Page 455 of 504

4558-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If the engine will not start
One of the following may be the cause of the problem: 
● There may not be sufficient fuel in the vehicle’s tank.  
Refuel the vehicle. 
● The engine may be flooded.  
Try to restart the engine again following correct starting procedures. 
( P. 182, 185) 
● There may be a malfunction in the engine immobilizer system.  
( P.  7 6 ) 
One of the following may be the cause of the problem: 
● The battery may be discharged. (P. 461) 
● The battery terminal connections may be loose or corroded. 
The engine starting system may be malfunctioning due to an electrical 
problem such as an open circuit or a blown fuse. However, an interim 
measure is available to start the engine. ( P. 456)
If the engine will not start even though correct starting proce- 
dures are being followed ( P. 182, 185), consider each of the fol- 
lowing points:
The engine will not start even though the starter motor operates 
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart entry
& start system). 
         
        
        
     
        
        Page 495 of 504

495Alphabetical index
AYGO_OM_Europe_OM99R19E
Emergency brake signal ......... 247 
Emergency flashers................. 406
Emergency tire puncture 
repair kit ................................. 427 
Engine 
“ACC” position....................... 182
Accessory mode ................... 187
Compartment ........................ 361
Engine switch ................ 182, 185
Hood ..................................... 358
How to start  
the engine................... 182, 185 
If the engine will not start ...... 455
Ignition switch 
(engine switch) ........... 182, 185
Overheating .......................... 465
Engine coolant ......................... 365 
Capacity ................................ 477 
Checking ............................... 365
Preparing and checking 
before winter....................... 253
Engine coolant 
temperature  
warning light .......................... 417 
Engine immobilizer system ...... 76
Engine oil.................................. 362
Capacity ................................ 474
Checking ............................... 362
Preparing and checking  
before winter....................... 253 
Engine switch 
(ignition switch) ............. 182, 185
EPS (Electronic Power 
Steering) ................................. 247
Function ................................ 247 
Warning light ......................... 419 
Flat tire 
Vehicles with a spare tire ...... 442 
Vehicles without 
a spare tire ......................... 427
Floor mats .................................. 26
Fluid
Brake .................................... 480 
Washer ................................. 370 
Fog lights ................................. 203
Replacing light bulbs..... 397, 400
Switch ................................... 203
Wattage ................................ 482
Follow me home system ......... 201
Front position lights ................ 199 
Light switch ........................... 199 
Replacing light bulbs............. 403
Front seats ............................... 152
Adjustment ............................ 152
Cleaning................................ 350
Correct driving posture ........... 28 
Seat heaters ......................... 332 
Front turn signal lights ........... 197
Replacing light bulbs............. 397
Turn signal lever ................... 197
Wattage ................................ 482
Fuel ........................................... 474 
Capacity ................................ 474 
Fuel gauge ............................ 101
Fuel pump shut off system.... 416
Information ............................ 483
Refueling............................... 209
Type .............................. 209, 474 
Warning light ......................... 422 
Fuel filler door.......................... 211
Refueling............................... 209
Fuel pump shut off system ..... 416
Fuses ........................................ 386
F