After Repair Procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Connect the WDS or equivalent to the DLC-2.
Cycle the ignition switch from OFF to ON.
Record DTC if retrieved.
Erase all diagnostic data using the WDS or equivalent.

Fig 1: Identifying DLC-2 (After Repair Procedure)
Courtesy of MAZDA MOTORS CORP.