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Home >> Mazda >> 2011 >> RX-8 R3, 1.3 2 >> Repair and Diagnosis >> Brakes >> Traction Control >> Dynamic Stability Control System >> DSC System Inspection >> ABS Control Inspection

ABS Control Inspection

  1. Perform "Preparation ".
  2. Connect the M-MDS to the DLC-2.
  3. Set up an active command mode inspection according to the combination of commands below.
    Fig 1: Identifying DLC-2 Connector
    G05985092Courtesy of MAZDA MOTORS CORP.

    Brake pressure retention 

    BRAKE PRESSURE RETENTION

    Command name Inspected wheels
    LF RF LR RR
    V_TRC_L OFF
    V_TRC_R
    V_STB_L
    V_STB_R
    LF_INLET ON OFF OFF OFF
    LF_OUTLET OFF
    LR_INLET ON
    LR_OUTLET OFF
    RF_INLET ON
    RF_OUTLET OFF
    RR INLET ON
    RR_OUTLET OFF
    PMP_MOTOR

    Brake pressure reduction 

    BRAKE PRESSURE REDUCTION

    Command name Inspected wheels
    LF RF LR RR
    V_TRC_L OFF
    V_TRC_R
    V_STB_L
    V_STB_R
    LF_INLET ON OFF OFF OFF
    LF_OUTLET
    LR_INLET OFF ON
    LR_OUTLET
    RF_INLET ON OFF
    RF_OUTLET
    RR_INLET OFF ON
    RR_OUTLET
    PMP_MOTOR ON
    CAUTION:
    • 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.
    NOTE:
    • When working with two people, one should press on the brake pedal, and the other should attempt to rotate the wheel being inspected.
  4. Send the command while depressing on the brake pedal and attempting to rotate the wheel being inspected.
  5. 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 HU/CM.)
      • 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
      • Extremely small leaks in the DSC HU/CM internal hydraulic system
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