1. Connect the SSTs to the brake pipes as shown in the figure.

2. Bleed the air from the brake system.
3. Measure the fluid pressure of the master cylinder and the rear brake.

Fluid pressure

Power brake unit inspection
Dual proportioning valve replacement (without abs)Mazda 6 Service Manual: Symptom troubleshooting
Verify the symptoms, and perform troubleshooting according to the
appropriate number.
Vehicles with ABS/TCS
Vehicles with DSC
*1 : DSC system contains traction control function, DSC indicator light goes
on and off while DSC operates.
*2 : DSC indicator light goes on and off while D ...
Mazda 6 Service Manual: Direct Mode
Direct mode can be used for temporarily switching gears by operating the steering
shift switch while the vehicle is being driven with the selector lever in the D
range.
While in direct mode, the D and M indication illuminate and the gear position
in use is illuminated. Direct mode is canceled ...