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Home >> Mazda >> 2016 >> 6 Sport, Automatic Trans >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> On-Board Diagnostic - Advanced Keyless Entry System >> DTC B13C3-29: Communication Error Between Start Stop Unit And LF Control Unit >> Notes
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DTC B13C3-29: Communication Error Between Start Stop Unit And LF Control Unit: Notes

Description Communication error between start stop unit and LF control unit
Detection condition 
  • Start stop unit detects the communication error with the LF control unit 10 times. 
Fail-safe function 
  • Inhibits the door lock/unlock control using the advanced keyless entry system.
Possible cause 
  • LF control unit connector or terminal malfunction
  • Start stop unit connector or terminal malfunction
  • Short to ground in wiring harness between start stop unit terminal 2F and LF control unit terminal I
  • Open circuit in wiring harness between start stop unit terminal 2F and LF control unit terminal I
  • LF control unit malfunction
  • Start stop unit malfunction
G10987311
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