Toyota Corolla (E120): Diagnostic trouble code chart

Pre–check

Terminals of ecu

Other materials:

On–vehicle inspection
1. Check battery electrolyte level Check the electrolyte quantity of each cell (maintenance–free battery).  If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.  check the electrolyte quantity of each cell ...

Monitor description
While the engine is being cranked, the battery positive voltage is applied to terminal sta of the ecm. If the ecm detects the starter control signal (sta) while the vehicle is driving, it will conclude that there is a fault in the starter control circuit. The ecm will turn on the mil and a d ...

Seat belt warning lamp for driver’s seat does not operate
Wiring diagram Inspection procedure 1 Check combination meter assy Ground terminal c9–12 on the combination meter side. check that the warning lightlights up. Ok: warning light lights up. 2 Inspect front seat inner belt assy lh Disconnect the front seat inner belt ...