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Power Door Locks/Keyless

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  1. Check for B-CAN DTCs. If any B-CAN DTCs are indicated, troubleshoot and resolve them first.
  2. If the door lock system and the keyless operation do not work, troubleshoot the door locks first.
    NOTE: The system does not function when the ignition switch is ON (II).
    SYMPTOM TROUBLESHOOTING CHART

    Symptom Check Items Also check for
    All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter
    • Poor ground (G401, G402, G405, G602, G652, G671, G801)
    • Driver's door key cylinder switch test (see DOOR KEY CYLINDER SWITCH TEST  )
    • Door lock switch test (check the door switch ON/OFF information with the HDS)
    • Door switch test (check the door switch ON/OFF information with the HDS)
    • Door lock actuator test (see DOOR LOCK ACTUATOR TEST  )
    • MICU input test (see MICU  )
    • Door multiplex control unit input test (see DOOR MULTIPLEX CONTROL UNIT  )
    • Rear MICU input test (see REAR MICU  )
    • Check for UART line
      • An open in the wire
      • A short to ground in the wire
      • A short to power in the wire
     
    Driver's door will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter
    • Poor ground (G401, G402)
    • Blown No. C3 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Blown No. C6 (7.5 A) fuse in the driver's under-dash fuse/relay box
    • Door lock actuator test (see DOOR LOCK ACTUATOR TEST  )
    • MICU input test (see MICU  )
    • Door multiplex control unit input test (see DOOR MULTIPLEX CONTROL UNIT  )
     
    Front passenger's and right sliding doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter
    • Poor ground (G401, G402)
    • Blown No. C4 (7.5 A) and/or No. C5 (7.5 A) fuses in the driver's under-dash fuse/relay box
    • Blown No. C1 (7.5 A) and/or No. C2 (7.5 A) fuses in the driver's under-dash fuse/relay box
    • Door lock actuator test (see DOOR LOCK ACTUATOR TEST  )
    • MICU input test (see MICU INPUT TEST )
    • Door multiplex control unit input test (see DOOR MULTIPLEX CONTROL UNIT  )
     
    Left sliding door will not lock or unlock
    • Door lock actuator test (see DOOR LOCK ACTUATOR TEST  )
    • Poor ground (G602, G801)
    • Blown No. E4 (10 A) fuse in the rear fuse box
    • Blown No. E5 (7.5 A) fuse in the rear fuse box
    • Rear MICU input test (see REAR MICU  )
     
    Keyless operation does not work (LOCK, UNLOCK, PANIC) Symptom troubleshooting (see KEYLESS OPERATION DOES NOT WORK (LOCK, UNLOCK, PANIC)  ) Customized settings in the multi-information display (MID), see Owner's manual for details
    Doors will not unlock (or lock) with the transmitter, but will unlock (or lock) with the door lock switch and the door key cylinder switch  
    Doors automatically relock 30 seconds after being unlocked with the transmitter even though a door has been opened  
    Only driver's door will unlock or door locks relock immediately after unlocking with the keyless transmitter Driver's door lock knob switch test (see DOOR LOCK KNOB SWITCH TEST  )  
    The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed Symptom troubleshooting (see THE HORN DOES NOT SOUND AND/OR THE HEADLIGHTS DO NOT FLASH WHEN THE PANIC BUTTON ON THE TRANSMITTER IS PRESSED  ) Customized settings in the multi-information display (MID), see Owner's manual for details
    Keyless operation will work even though the ignition key is in the ignition switch Ignition key switch test (see DRIVER'S DOOR KEY CYLINDER SWITCH CIRCUIT TROUBLESHOOTING  )  
    Tailgate will not release  
    Security alarm system will not arm Symptom troubleshooting (see SECURITY ALARM SYSTEM WILL NOT ARM  )  
    (1) With power tailgate
    (2) Without power tailgate