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LF Control Unit Removal/Installation

CAUTION:
  • When replacing the LF control unit, perform the configuration to assure that the system operates correctly.
  1. To replace the LF control unit, perform the following procedure.
    1. Connect the M-MDS to the DLC-2.
    2. Switch the ignition ON (engine off).
    3. Activate the M-MDS and perform the following procedure.
      1. Press [Start] to start the vehicle identification.
      2. Press the [Toolbox] tab.
      3. Press the [Work Support] icon.
      4. Press [Configuration].
      5. Press [Run] to perform the configuration.
      6. Press [LFU].
      7. When [Install the new ECU] is displayed, move to the LF control unit replacement procedure.
  2. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  3. Remove the front scuff plate (RH). (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
  4. Remove the front side trim (RH). (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
  5. While pressing tab of the bracket in the direction of arrows (1) shown in the figure, pull the LF control unit connector in the direction of arrow (2) to pull out the LF control unit from the bracket.
    G16376551Courtesy of MAZDA MOTORS CORP.
  6. While pressing tab of the bracket in the direction of arrows (1) shown in the figure, pull the LF control unit connector in the direction of arrow (2) to pull out the LF control unit from the bracket.
    G16376552Courtesy of MAZDA MOTORS CORP.
  7. Disconnect the connector and remove the LF control unit.
  8. Install in the reverse order of removal.
  9. If the LF control unit is replaced, perform the following procedure.
    1. Return to the M-MDS operation and press [Continue].
    2. When the M-MDS processing is completed, press [Next].
    3. When the M-MDS processing is completed, press [Next].
    4. Verify that the following conditions/operations are met/completed, mark the check boxes, and then press [Next].
      • Switch the main power ON (READY off)
      • Install battery charger to vehicle
      • Lead-acid Battery voltage: 11.6 V or more
      • Connect power cable to M-MDS
      • Front doors on both sides and liftgate are open
    5. Press [Finish].
    6. Switch the ignition OFF.
    7. Switch the ignition ON (engine off) to complete the global central configuration (GCC) for the LF control unit.
    8. Perform the immobilizer system-related part programming using the M-MDS. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING .)
    9. Clear the DTC. (Refer to CLEARING DTC .) )
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