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DTC B1143:13 [Front Body Control Module (FBCM)]: Notes

WARNING: This page is about a different car, the 2024 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1143:13 (FRONT BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description IG2 control circuit malfunction
Detection condition
  • Front body control module (FBCM) detects an open circuit in the IG2 control circuit for 2s or more with the ignition switched ON (engine off or on).
Fail-safe Not applicable
Possible cause
  • Start stop unit connector or terminal malfunction
  • Front body control module (FBCM) connector or terminal malfunction
  • Open circuit in the wiring harness between start stop unit terminal 2D and front body control module (FBCM) terminal 2U
  • Start stop unit malfunction
  • Front body control module (FBCM) malfunction
G16332611Courtesy of MAZDA MOTORS CORP.