Brake Fluid Pressure Sensor Inspection

Switch the ignition to off.
Disconnect the brake pipe flare nut.
Remove the clip and disconnect the brake hose.

Fig 1: Disconnecting Brake Pipe Flare Nut
Courtesy of MAZDA MOTORS CORP.
Install the SSTs to the brake pipe as shown in illustration.
Perform air bleeding of the SST and brake line from bleeder screw A.
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 .)
Fig 2: Installing SSTs To Brake Pipe
Courtesy of MAZDA MOTORS CORP.
Remove the SSTs after the inspection and install the brake hose, clip and brake pipe to their original positions. (See BRAKE HOSE (FRONT) REMOVAL/INSTALLATION .)
Perform air bleeding of the brake line. (See BRAKE FLUID AIR BLEEDING .)