Without Using WDS Or Equivalent

CAUTION: Connecting the wrong DLC terminals may possibly cause a malfunction. Carefully connect the specified terminals only.

Connect the TBS terminal at the DLC to body ground using a jumper wire.
Turn the ignition key to ON (engine off).
Output all stored DTCs.
After verifying that the first code is repeated, depress the brake pedal 10 times at intervals of less than one second. (1 sec.)
Turn the ignition key to OFF and disconnect the jumper wire.

Fig 1: Identifying DLC TBS Terminal

Courtesy of MAZDA MOTORS CORP.

NOTE:

DTCs cannot be cleared if the following occur:
- Intervals of depressing the brake pedal exceed one second. (1 sec.).
- The brake switch has failed.
After repairing the ABS wheel-speed sensor or replacing ABS/TCS HU/CM (with TCS) or ABS HU/CM (without TCS), the ABS warning light may not go off when ignition key is turned ON. In this case, start engine and drive the vehicle at a speed of more than 10 km/h {6.2 mph} until the ABS and/or BRAKE system warning light goes off.