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DSC HU/Cm Removal/Installation: Notes

CAUTION:
  • When replacing the DSC HU/CM, the configuration procedure must be done before removing the DSC HU/CM. If the configuration is not completed before removing the DSC HU/CM, DSC will not work properly after installation of the DSC HU/CM.
  • The internal parts of the DSC HU/CM could be damaged if dropped. Be careful not to drop the DSC HU/CM. Replace the DSC HU/CM if it is subjected to an impact.
  1. Remove the following parts:
    1. Windshield wiper arm and blade. See WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION .
    2. Cowl grille. See COWL GRILLE REMOVAL/INSTALLATION .
    3. Windshield wiper motor. See WINDSHIELD WIPER MOTOR REMOVAL/INSTALLATION .
    4. Cowl panel. See COWL PANEL REMOVAL/INSTALLATION .
  2. Disconnect the brake pipes (master cylinder side). See MASTER CYLINDER REMOVAL/INSTALLATION .
  3. For the vehicles with MZI-3.7, perform the following steps.
    1. Remove the power steering reserve tank component. See POWER STEERING OIL PUMP REMOVAL/INSTALLATION [MZI-3.7] .
    2. Disconnect the OCV connector. See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [MZI-3.7] .
    3. Disconnect the ignition coil connector. See IGNITION COIL REMOVAL/INSTALLATION [MZI-3.7] .
    4. Disconnect the HO2S (RH) connector. See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [MZI-3.7] .
    5. Disconnect the pressure switch connector. See POWER STEERING OIL PUMP REMOVAL/INSTALLATION [MZI-3.7] .
    6. Disconnect the wiring harness from the wiring harness bracket as shown in the figure
    7. Set the wiring harness out of the way
  4. Remove in the order indicated in the table
  5. Install in the reverse order of removal.
  6. Add brake fluid, bleed the brakes, and inspect for leakage after the installation has been completed. See AIR BLEEDING .
  7. Configurate the DSC HU/CM (only when replacing it). See DSC CONFIGURATION .
  8. Clear the DTCs from the memory. See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .
    Fig 1: Identifying Wiring Harness And Wiring Harness Bracket
    G06205578Courtesy of MAZDA MOTORS CORP.
    Fig 2: Identifying DSC HU/CM Removal Order
    G06205579Courtesy of MAZDA MOTORS CORP.
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