July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Trouble Codes Reading Procedure Using WDS Or Equivalent: Notes

Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located on the left side of the steering column.
Retrieve DTC by WDS or equivalent.

Fig 1: Locating DLC-2

Courtesy of MAZDA MOTORS CORP.