2012 Toyota Corolla Owners Manual - Page 832
2012 Toyota Corolla Manual
Page 832 highlights
4 -2 . M a int e na nc e Emission inspection and maintenance (I/M) programs Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system.
We apologize, but we cannot currently deliver this PDF manual by request of the manufacturer.
We apologize for any inconveniece.