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Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control System >> Electrical Supply Unit (ESU) Bracket Removal/Installation
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Electrical Supply Unit (ESU) Bracket Removal/Installation

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  2. Remove the following parts:
    1. Rear package tray (See REAR PACKAGE TRAY REMOVAL/INSTALLATION .)
    2. Trunk covering (See TRUNK COVERING REMOVAL/INSTALLATION .)
    3. Trunk board (See TRUNK BOARD REMOVAL/INSTALLATION (US) .)
    4. Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION .)
    5. Trunk side upper trim (LH) (See TRUNK SIDE UPPER TRIM REMOVAL/INSTALLATION .)
  3. Partially peel the trunk side trim (LH). (See TRUNK SIDE TRIM REMOVAL/INSTALLATION (US) .)
  4. Remove the electrical supply unit (ESU). (See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION .)
  5. Remove the bolts.
    Fig 1: Electrical Supply Unit (ESU) Bracket Bolts With Torque Specification
    G13180005Courtesy of MAZDA MOTORS CORP.
  6. Remove the electrical supply unit (ESU) bracket.
  7. Install in the reverse order of removal.
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