Without Using WDS Or Equivalent

1. Connect the TBS terminal at DLC to body ground using a jumper wire.
Fig 1: Identifying DLC TBS Terminal
Courtesy of MAZDA MOTORS CORP.
2. Turn ignition key to ON (engine off).
3. After the ABS warning light illuminates for 3 seconds  the ABS warning light indicates DTCs.
4. After completion of repairs, clear DTCs.

Fig 2: Warning Light Flashing Pattern (DTC 22 Shown)

Courtesy of MAZDA MOTORS CORP.