Brake Fluid Pressure Sensor Inspection

Switch the ignition to off.
Disconnect the brake pipe flare nut.
Disconnect the brake hose (LF).
Remove the bracket.

Fig 1: Identifying Brake Pipe Flare Nut
Courtesy of MAZDA MOTORS CORP.
Install the SSTs to the brake pipe as shown in the figure.
Perform air bleeding of the SST and brake line from bleeder screw A.

Fig 2: Performing Air Bleeding Of SST And Brake Line From Bleeder Screw A
Courtesy of MAZDA MOTORS CORP.
Connect the M-MDS to the DLC-2.
Select the "MCYLI_P" PID. See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .
Start the engine.
Depress the brake pedal, and verify that the fluid pressure value of the SST (gauge) and the value shown on the M-MDS are equal.
- If the fluid pressure values are different, replace the DSC HU/CM. See DSC HU/CM REMOVAL/INSTALLATION .
Remove the SSTs after the inspection and install the bracket, brake hose and brake pipe to their original positions. See BRAKE HOSE (FRONT) REMOVAL/INSTALLATION .
Perform air bleeding of the brake line. See AIR BLEEDING .

Fig 3: Identifying DLC-2
Courtesy of MAZDA MOTORS CORP.