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Body Control Module (BCM) Inspection: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front scuff plate, (driver-side). See FRONT SCUFF PLATE REMOVAL/INSTALLATION .
  2. Remove the front side trim, (driver-side). See FRONT SIDE TRIM REMOVAL/INSTALLATION .
  3. Remove the BCM with the connector connected. See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .
  4. Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.
    • If the voltage is not as specified in the Terminal Voltage Table, inspect the parts under "Inspection item (s)".
    • If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the BCM.