2018 TOYOTA GT86 ECU

340 4-3. Do-it-yourself maintenance
■Adding distilled water
Remove the vent plug.
Add distilled water.
If the “UPPER LEVEL” line cannot be seen, check the fluid level by
looking directly at the cell.
Put the vent plug back on and close securely.
Low O.K.
■Before recharging
When recharging, the battery produces hydrogen gas which is fla mmable
and explosive. Therefore, before recharging:
● If recharging with the battery installed on the vehicle, be sur e to discon-
nect the ground cable.
● Make sure the power switch on the charger is off when connectin g and
disconnecting the charger cables to the battery.
STEP 1
STEP 2
STEP 3

371
4-3. Do-it-yourself maintenance
4
Maintenance and care
16SPARE
See note. Spare fuse
17SPARESee note. Spare fuse
18SPARESee note. Spare fuse
19SPARESee note. Spare fuse
20SPARESee note. Spare fuse
21ST 7.5 A Starting system
22ALT-S7.5 A Charging system
23(STR LOCK) 7.5 A Steering lock system
24D/L 20 A Power door lock
25ETCS 15 A Engine control unit
26(AT+B)7.5 A Transmission
27(AM2 NO. 2) 7.5 A Smart key system
28EFI (CTRL) 15 A Engine control unit
29EFI (HTR) 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
30EFI (IGN)
15 A Starting system
31EFI (+B)7.5 A Engine control unit
32HAZ 15 ATurn signal lights, emergency
flashers
33MPX-B
7.5 AAutomatic air conditioning system,
gauge and meters
34F/PMP
20 AMultiport fuel injection system/
sequential multiport fuel injection
system
35IG2 MAIN
30 ASRS airbag system, engine control
unit
36DCC
30 AInterior light, wireless remote con-
trol, main body ECU
FuseAmpereCircuit

372 4-3. Do-it-yourself maintenance
Note
One of each of the following spare fuses are provided: 7.5 A, 10 A, 15
A, 20 A, 25 A, 30 A.
37HORN NO. 2 7.5 A Horn
38HORN NO. 1 7.5 A Horn
39H-LP LH LO 15 A Left-hand headlight (low beam)
40H-LP RH LO 15 A Right-hand headlight (low beam)
41H-LP LH HI 10 A Left-hand headlight (high beam)
42H-LP RH HI 10 A Right-hand headlight (high beam)
43INJ30 AMultiport fuel injection system/
sequential multiport fuel injection
system
44H-LP WASHER 30 A
45AM2 NO. 1 40 A Starting system, engine control unit
46EPS
80 A Electric power steering
47A/B MAIN 15 A SRS airbag system
48ECU-B7.5 AWireless remote control, main body
ECU
49DOME
20 A Interior light
50IG27.5 A Engine control unit
FuseAmpereCircuit

373
4-3. Do-it-yourself maintenance
4
Maintenance and care
■
Instrument panel
FuseAmpereCircuit
1ECU ACC 10 AMain body ECU, outside rear view
mirrors
2P/POINT No.2 15 A Power outlet
3PANEL
10 A Illumination
4TAIL10 A Tail lights
5DRL10 A Daytime running light system
6UNIT IG110 A Inside rear view mirror
7STOP7.5 A Stop lights
8OBD7.5 A On-board diagnosis system
9HEATER-S 7.5 A Air conditioning system
10HEATER 10 A Air conditioning system
11FR FOG LH 10 A Left-hand front fog light
12FR FOG RH 10 A Right-hand front fog light
13BK/UP LP7.5 A Back-up lights
14ECU IG1 10 A ABS, electric power steering
15AM17.5 A Starting system
16AMP 15 A Audio system
17AT UNIT 15 A Transmission
18GAUGE7.5 AGauge and meters, smart key sys-
tem
19ECU IG2
10 A Engine control unit
20SEAT HTR LH 10 A Left-hand seat heater
21SEAT HTR RH 10 A Right-hand seat heater
22RADIO7.5 A Audio system
23P/POINT No.1 15 A Power outlet

381
4-3. Do-it-yourself maintenance
4
Maintenance and care
WARNING
■
Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immedia tely after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hand s. When it is
unavoidable to hold the glass portion, use and hold with a clea n dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or c rack.
● Fully install the light bulbs and any parts used to secure them . Failure to
do so may result in heat damage, fire, or water entering a light unit. This
may damage the light or cause condensation to build up on the i nner side
of the lens.
■ When changing the back-up lights
Stop the engine and wait until the exhaust pipes have cooled do wn suffi-
ciently. The lights are located near the exhaust pipe and touching a hot
exhaust pipe can cause burns.
■ To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
385
5-1. Essential information
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Co ntact
your Toyota dealer before towing.
● The engine is running, but t he vehicle will not move.
● The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available in an emergency, your vehicle m ay be
temporarily towed using a cable or chain secured to the emergen cy
towing eyelet. This should only be attempted on hard surfaced r oads
for short distances at low speeds.
A driver must be in the vehicle to steer and operate the brakes . The
vehicle’s wheels, drive train, axles, steering and brakes must be in
good condition.
For vehicles with an automatic transmission, only the front towing
eyelet may be used.
If towing is necessary, we recommend having your vehicle towed by
your Toyota dealer or a commerci al towing service, using a lift-type
truck or a flat bed truck.
Use a safety chain system for all towing, and abide by all stat e/pro-
vincial and local laws.
If towing from the rear, the vehicle's front wheels and axles m ust be
in good condition. ( P. 391)
If they are damaged, use a to wing dolly or flat bed truck.

5
When trouble arises
389
5-1. Essential
information
Insert the towing eyelet into the
hole and tighten partially by
hand.
Tighten down the towing eyelet
securely using a wheel nut
wrench.STEP 2
STEP 3
■Location of the eme rgency towing eyelet
P. 424
WARNING
■ Installing towing eyelets to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelets may come loose during towing. This
may lead to accidents that cause serious injury or even death.
■ After towing
●Always remove the towing eyelet. Failure to do so can cause the SRS air-
bags to not operate correctly in the event of a frontal collisi on.
● Always remove the towing eyelets. Failure to do so may prevent the fuel
pump shut off system from operating properly if the vehicle receives an
impact from the rear.

398 5-2. Steps to take in an emergency
(Comes on in yellow) Cruise control indicator light
Indicates a malfunction in the cruise control system.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after several driving trips.
If the malfunction indicator lamp does not go off even after several trips, con-
tact your Toyota dealer as soon as possible.
■ SRS warning light
P. 125
■ Electric power steering warning light (warning buzzer)
The electric power steering warning light may come on and the w arning
buzzer may sound when the voltage is low or the voltage drops.
WARNING
■ When the electric power steer ing 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.
Warning lightWarning light/Details