Brake Fluid Pressure Sensor Inspection

NOTE:

• The brake fluid pressure sensor is integrated into the DSC HU/CM and installed to the brake line of LF-RR brake system. Therefore, perform the brake fluid pressure sensor inspection with the SST installed to the brake pipe on the left front wheel.

1. Turn the ignition switch off.
2. Loosen the brake pipe flare nut using the commercially available flare nut wrench.
3. Disconnect the brake pipe.
4. Remove the clamp and disconnect the brake hose.
   Fig 1: Identifying Brake Hose, Brake Pipe And Clamp

   Courtesy of MAZDA MOTORS CORP.
5. Install the SSTs  to the brake pipe as shown in the figure.
6. Perform air bleeding of the SST  and brake line from bleeder screw A.
   Fig 2: Installing SSTs To Brake Pipe

   Courtesy of MAZDA MOTORS CORP.
7. Connect the M-MDS to the DLC-2.
8. Select the "MCYLI P" PID. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
9. Start the engine.
10. 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 3: Identifying DLC-2 Connector

    Courtesy of MAZDA MOTORS CORP.
11. Remove the SSTs  after the inspection and install the brake hose, clamp and brake pipe to their original positions.
12. Perform air bleeding of the brake line. (See AIR BLEEDING .)

Fig 4: Identifying Brake Hose, Brake Pipe And Clamp

Courtesy of MAZDA MOTORS CORP.