Mazda RX-8 Manual page 1463

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4. Brake pressure reduction

Inspected wheels

Command name

To protect the DSC HU/CM, the solenoid valve and the pump motor used during active

command mode stay on for only 10 s or less each time they are switched on.

When working with two people, one should press on the brake pedal, and the other should

attempt to rotate the wheel being inspected.

6. Send the command while depressing on the brake pedal and attempting to rotate the wheel being

7. While brake pressure is maintained and a DSC HU/CM operation click sound is heard, confirm that the

wheel does not rotate. While brake pressure is being reduced and an DSC HU/CM operation click sound

is heard, confirm that the wheel rotates.

Performing the inspection above determines the following:

The DSC HU/CM brake lines are normal.

The DSC HU/CM hydraulic system is not significantly abnormal (including DSC

The DSC HU/CM internal electrical parts (solenoid, motor and other parts) are normal.

The DSC unit and DSC HU/CM output system wiring harnesses (solenoid valve, relay

system) are normal.

However, the following items cannot be verified.

Malfunction with intermittent occurrence of the above items

Malfunction of DSC HU/CM input system wiring harnesses and parts

RX8 - Brakes

Troubleshooting