Brake Fluid Pressure Sensor Inspection

Special Service Tool (SST) 

49 U043 004A Oil pressure gauge (Part of 49 U043 0A0A)

Courtesy of MAZDA MOTORS CORP.

49 U043 005 Joint (Part of 49 U043 0A0A)

Courtesy of MAZDA MOTORS CORP.

49 U043 006 Hose (Part of 49 U043 0A0A)

Courtesy of MAZDA MOTORS CORP.

1. Switch the ignition to off.
2. Remove the clips.
   Fig 1: Removing Clips

   Courtesy of MAZDA MOTORS CORP.
3. Set the splash shield out of the way.
4. Disconnect the brake pipe from the LF brake hose.
   Fig 2: Disconnecting Brake Pipe From LF Brake Hose

   Courtesy of MAZDA MOTORS CORP.
5. Remove the clip.
6. Remove the LF brake hose from the bracket.
7. Detach the brake pipe from the pipe holder.
8. Install the SST to the brake pipe as shown in the figure.
   Fig 3: Installing SST To Brake Pipe

   Courtesy of MAZDA MOTORS CORP.
9. Bleed the brake line and the SSTs of air. Bleed the air form the SSTs using bleeder screw A.
10. Connect the M-MDS to the DLC-2.
11. Select the "BRK_F_P_R" PID.
12. Start the engine.
13. Depress the brake pedal, and confirm that the fluid pressure value of the SST (Gauge) and the value shown on the M-MDS are equal
    • If the fluid pressures are different, replace the DSC HU/CM. (See DSC HU/CM REMOVAL/INSTALLATION .)
14. After the inspection, remove the SSTs, install the brake hose, clamp, and brake pipe to the original positions, and then bleed the air from the brake line. (See FRONT BRAKE HOSE REMOVAL/INSTALLATION .) (See BRAKE FLUID AIR BLEEDING .)