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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Symptom Troubleshooting - Security And Locks >> Advanced Keyless Entry System Does Not Operate >> Outline
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Advanced Keyless Entry System Does Not Operate: Outline

ADVANCED KEYLESS ENTRY SYSTEM DOES NOT OPERATE DESCRIPTION AND POSSIBLE CAUSE

Description  
  • Cannot unlock even if door release touch sensor is touched.
  • Cannot lock even if door lock touch sensor is touched.
Possible cause  
  • Remote transmitter is in power-saving function
  • Battery used for remote transmitter is not effective
    • Battery other than CR2032 is used
    • Battery is inserted in opposite direction
    • Battery voltage is low
  • Remote transmitter malfunction
  • Connector or terminal malfunction of the following parts:
    • Front outer handle
    • Keyless receiver
    • LF control module
    • BCM
    • Door-electrical supply unit
    • Front door latch and lock actuator
    • Door lock-link switch (front door latch and lock actuator)
  • Short to ground or open circuit in keyless antenna (front outer handle) signal circuit
  • Short to ground or open circuit in touch sensor (front outer handle) signal circuit
  • Short to ground or open circuit in keyless receiver signal circuit
  • Open circuit in keyless receiver ground circuit
  • Short to ground or open circuit in door lock-link switch (front door latch and lock actuator) signal circuit
  • Open circuit in door lock-link switch (front door latch and lock actuator) ground circuit
  • Front outer handle malfunction
  • Keyless receiver malfunction
  • Front door latch and lock actuator malfunction
  • LF control unit malfunction
  • Door-electrical supply unit malfunction
G13716876Courtesy of MAZDA MOTORS CORP.
G13716877Courtesy of MAZDA MOTORS CORP.