Toyota Corolla (E120): Catalyst system efficiency below threshold

Inspection procedure

Circuit description

Other materials:

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 ...

Outside rear view mirrors
The rear view mirror's position can be adjusted to enable sufficient confirmation of the rear view. ■When using the outside rear view mirrors in a cold weather When it is cold and the outside rear view mirrors are frozen, it may not be possible to fold/extend them or adjust the mirror surface. Rem ...

Circuit description
The crankshaft position sensor (ne signal) consists of a magnet, iron core and pickup coil. The ne signal plate (crankshaft position sensor plate) has 34 teeth and is installed on the crankshaft. The ne signal sensor generates 34 signals for each engine revolution. This sensor monitors a p ...