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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 615 (CONTROL SYSTEM [BODY CONTROL MODULE))BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATIONMTX
2011 Mazda 3 Mazdaspeed, 2.3 3

Body Control Module (BCM) Removal/Installation: MTX

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION MTX
WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform the BCM configuration when replacing it. (See BODY CONTROL MODULE (BCM) CONFIGURATION .)
  2. Disconnect the negative battery cable.
  3. Remove the following parts:
    1. Front scuff plate (LH) (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
    2. Front side trim (LH) (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
    3. Upper panel (See UPPER PANEL REMOVAL/INSTALLATION .)
    4. Shift knob (See MANUAL TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
    5. Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
    6. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
    7. Console (See CONSOLE REMOVAL/INSTALLATION .)
  4. Set the hood release lever out of the way. (See HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION .)
  5. Remove the lower panel, (driver-side) (See LOWER PANEL REMOVAL/INSTALLATION .)
  6. Remove the starter cut relay, (with advanced keyless entry and push button start system) (see STARTER CUT RELAY REMOVAL/INSTALLATION [MTX] .)
  7. Remove the nuts shown in the illustration.
    Fig 1: Body Control Module (BCM) And Nut With Torque Specifications
    G06732671Courtesy of MAZDA MOTORS CORP.
  8. Pry off the lock device of the clip while pressing the tab in the position shown in the illustration.
    Fig 2: Prying Off Lock Device Of Clip
    G06732666Courtesy of MAZDA MOTORS CORP.
  9. Rotate the clip in the direction of the arrow shown in the illustration.
    Fig 3: Rotating BCM Bracket Clip
    G06732667Courtesy of MAZDA MOTORS CORP.
  10. Remove the clip by pulling it in the direction of the arrow shown in the illustration.
    Fig 4: Removing BCM Bracket Clip
    G06732668Courtesy of MAZDA MOTORS CORP.
  11. Disconnect the connector shown in the illustration.
    Fig 5: Identifying Body Control Module (BCM) Connectors
    G06732669Courtesy of MAZDA MOTORS CORP.
  12. While pressing the tab shown in the illustration, pull the bracket in the direction of the arrow and remove it.
  13. Remove the BCM.
  14. Install in the reverse order of removal.
    Fig 6: Pulling BCM Bracket
    G06732670Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.