DTC C1939 - Brake Pressure Switch (Bps) Circuit Failure

Fig 1: DTC C1939 - Brake Pressure Switch (BPS) Circuit Failure (Steps 1-5)

Courtesy of MAZDA MOTORS CORP.

Fig 2: DTC C1939 - Brake Pressure Switch (BPS) Circuit Failure (Step 6 & Identifying Brake Pressure Switch Connector Terminals)

Courtesy of MAZDA MOTORS CORP.