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Home >> Mazda >> 2011 >> RX-8 R3, 1.3 4 >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Abs System Inspection >> Abs Hydraulic Unit On-Vehicle Inspection >> Operation Inspection

Operation 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.
    OPERATION CONDITION

    Operation condition Command name Command transmission type
    PMP_MOTOR RF_OUTLET RF_INLET ABS_POWER
    Brake pressure retention OFF OFF ON ON Manual
    Brake pressure reduction ON ON ON ON

    The chart above shows an example of a right front wheel inspection.

    CAUTION:
    • To protect the ABS 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 the brake pedal and attempting to rotate the wheel being inspected.
  5. Performing the inspection above determines the following:
    • The ABS HU/CM brake lines are normal.
    • The ABS HU/CM hydraulic system is not significantly abnormal (including inside ABS HU/CM.)
    • The ABS HU/CM internal electrical parts (solenoid, motor and other parts) are normal.
    • The ABS HU/CM output system wiring harnesses (solenoid valve, relay system) are normal.
      • However, the following items cannot be verified.
        • Malfunction of ABS HU/CM input system wiring harnesses and parts
        • Extremely small leaks in the ABS HU/CM internal hydraulic system
        • Malfunction with intermittent occurrence of the above items
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