Toyota Corolla (E120): Basic inspection
When the malfunction is not confirmed in the dtc check, troubleshooting should be carried out in all the possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location causing the problem can be found quickly and efficiently. Therefore, using this check is essential in the engine troubleshooting.
1 Check battery voltage
Notice
: carry out this check with the engine stopped and ignition switch off.

Ng charge or replace battery

2 Check if engine will crank
Ng proceed to problem symptoms table on page

3 Check if engine starts
Ng go to step 7

4 Check air filter

- Visually check that the air filter is not excessively dirty or oily.
Notice
: if necessary, clean the filter with compressed air. First blow from the inside thoroughly, then blow from the outside of the filter.
Ng clean or replace

5 Check idle speed
Ng proceed to problem symptoms table on page

6 Check ignition timing
Ng proceed to page 14–1 and continue to troubleshoot

Proceed to problem symptoms table on page
7 Check fuel pressure
Ng proceed to page 11–1 and continue to troubleshoot

8 Check for spark
Ng proceed to page 18–1 and continue to troubleshoot

Proceed to problem symptoms table on page
Other materials:
Steering column
Preparation
Sst
Recomended tools
Equipment
...
Driving assist systems
To keep driving safety and
performance, the following
systems operate automatically
in response to various
driving situations. Be
aware, however, that these
systems are supplementary
and should not be relied
upon too heavily when operating
the vehicle.
Summary of the driving
assist systems
■ ABS ( ...
Diagnostic trouble code chart
Hint:
when the srs warning light remains lit up and the dtc is the normal
code, this means a voltage source
drops.
This malfunction is not stored in memory by the airbag sensor assy center
and if the power source
voltage returns to normal, the srs warning light will autom ...


