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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Advanced Keyless Entry System >> DTC B10C9-1F: Keyless Antenna (Interior, Front) Circuit Malfunction (Advanced Keyless Entry System) >> Notes
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DTC B10C9-1F: Keyless Antenna (Interior, Front) Circuit Malfunction (Advanced Keyless Entry System): Notes

DTC B10C9:1F (ADVANCED KEYLESS ENTRY SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE

Description Keyless antenna (interior, front) circuit malfunction
Detection condition
  • Start stop unit detects an open circuit or short to ground in the keyless antenna (interior, front) circuit with the ignition switched off.
Fail-safe
  • Inhibits the door lock/unlock control using the advanced keyless entry system.
Possible cause
  • Keyless antenna (interior, front) connector or terminal malfunction
  • LF control unit connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
  • LF control unit terminal K-Keyless antenna (interior, front) terminal B
    • LF control unit terminal M-Keyless antenna (interior, front) terminal A
  • Open circuit in wiring harness between the following terminals:
    • LF control unit terminal K-Keyless antenna (interior, front) terminal B
      • LF control unit terminal M-Keyless antenna (interior, front) terminal A
  • LF control unit malfunction
  • Keyless antenna (interior, front) malfunction
  • Start stop unit malfunction
G13151788Courtesy of MAZDA MOTORS CORP.