Toyota Corolla (E170) 2014–2019 Owners Manual / Maintenance and care / Do-it-yourself maintenance / Do-it-yourself service precautions
Toyota Corolla (E170): Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections.


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
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, 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 or the battery.
Fuel and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corrosive sulfuric acid.
■When working near the electric cooling fan or radiator grille
Vehicles without a smart key system: Be sure the engine switch is off. With
the engine switch in the “ON” position, the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high.
Vehicles with a smart key system: Be sure the engine switch is off. With the engine
switch in IGNITION ON mode, the electric cooling fan may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. ■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.
Other materials:
Power windows
Opening and closing the
power windows
The power windows can be
opened and closed using the
switches.
Operating the switch moves the
windows as follows:
Closing
One-touch closing*
Opening
One-touch opening*
*: To stop the window partway,
operate the switch in the opposite
direction.
■The po ...
Check mode procedure
1. Dtc check (check mode)
Hint:
hand–held tester only:
compared to the normal mode, the check mode has more sensing
ability to detect malfunctions. Furthermore, the same diagnostic
items which are detected in the normal mode can also be
detected in the check mode.
Procedure for check m ...
Circuit description
Refer to dtc p0130
Dtc no
Dtc detection condition
Trouble area
P0136
The following condition (a) or (b) continues for 300 seconds or
more:
During driving with the engine warmed up, heated oxygen
sensor o tp t does not change
output change.
he ...


