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Home >> Subaru >> 2015 >> BRZ Series.Blue, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Entry Start System Entry System (Keyless Entry) >> Entry & Start System (Entry Function) >> Neither Smart Lock Nor Smart Unlock Operation Works From Any Of The Doors (But The Wireless Function Works) >> Inspection steps
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Inspection steps

CAUTION:
  • Some functions of the entry & start system (entry function) use the LIN communication system and the CAN communication system. Inspect the communication function by referring to "How to troubleshoot" (Refer to HOW TO PROCEED WITH TROUBLESHOOTING  ). Confirm that the communication system is functioning properly before proceeding to repair the entry & start system (entry function).
  • Before replacing the collation ECM (smart key ECM assembly), refer to "ENTRY & START SYSTEM (ENTRY FUNCTION) ". (Refer to )
  • After the repair work is complete, perform the "DTC output check operation" to confirm that the DTC is not output again.
  • Check if the electrical key transmitter sub-assembly is inside the vehicle.
  • Even if you want to check the entry lock operation several times, the setting does not allow you to perform the lock operation more than twice in a row. To perform the entry lock operation more than twice, you have to unlock a door once (you may use any type of unlock operation). This limitation applies only to the entry lock operation. A wireless lock or other types of lock operations can be performed any number of times without any limitations.
  1. Check the power door lock operation.
    1. Operate the door control switch on the power window regulator master switch assembly, and check if the door locks or unlocks properly according to the switch operation you have performed. (Refer to OPERATION CHECK )

      Criteria: The door lock operation is performed properly.

      NG: Go to "Power door lock control system" ("SYMPTOM TABLE ").

      OK: Go to next step

  2. Read numerical values using the SSM3 ([Auto Entry Cancel SW]).
    1. Connect the SSM3 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn on the SSM3.
    4. Enter the following menu items: [Keyless access system check] →[Collation ECM] →[Current Data Display & Save].
    5. Based on the contents of the SSM3 display, read the [Current Data Display & Save].

      Entry & Start

      ENTRY & START TESTER DISPLAY REFERENCE

      Tester display Measurement items/range Normal condition Notes for diagnosis
      [Smart Cancel] Entry cancel function setting/[OFF] or [ON] Mode status indication
      OFF: Entry & start system is not cancelled.
      ON: Entry & start system is cancelled.      		 The entry cancel function is disabled by default. If the customer wishes to cancel the entry & start system function (lock/unlock doors holding the key, etc.), you can disable this function by using the customize function (Refer to CUSTOMIZE PARAMETERS  ).

      Result

      Result Go to
      The cancel setting for the entry function is disabled. A
      The cancel setting for the entry function is enabled. B

      B: Disable the entry key cancel function. (Refer to CUSTOMIZE PARAMETERS  )

      A: Go to next step

  3. Checking radio wave environment
    1. Move the electrical key transmitter sub-assembly according to the instructions provided below to inspect the operation. (Refer to OPERATION CHECK  )
      NOTE:
      • Try moving the electrical key transmitter sub-assembly closer to the door outer handle assembly or the electrical key antenna, so that it is less likely to be affected by interference from external radio waves. In this way, you can identify if the problem is caused by external radio waves or not.
      • Although the wireless function and the entry function transmits the same radio wave, the wave logic differs between the two. Due to this, only one of the two functions may be affected by interference from external radio waves, while the other remains unaffected.
    2. Move the electrical key transmitter sub-assembly towards the driver's door outer handle assembly and check how the entry lock and unlock operations work on the driver's door.
      CAUTION: If the key is within 0.2 m of the door outer handle assembly, communication is not possible.
      Fig 1: Checking Electrical Key Transmitter Sub-Assembly (Driver Door Outer Handle Assembly)
      G10216256Courtesy of SUBARU OF AMERICA, INC.
    3. Move the electrical key transmitter sub-assembly towards the passenger's door outer handle assembly and check how the entry lock and unlock operations work on the passenger's door.
      CAUTION: If the key is within 0.2 m of the door outer handle assembly, communication is not possible.
      Fig 2: Checking Electrical Key Transmitter Sub-Assembly (Passenger Door Outer Handle Assembly)
      G10216257Courtesy of SUBARU OF AMERICA, INC.
    4. Move the electrical key transmitter sub-assembly toward the electrical key antenna (trunk exterior antenna) and check the entry trunk open function.
      CAUTION: If the key is within 0.2m (0.656 feet) of the rear bumper, communication is not possible.
      Fig 3: Checking Electrical Key Transmitter Sub-Assembly (Trunk Exterior Antenna)
      G10216258Courtesy of SUBARU OF AMERICA, INC.
      NOTE:
      • If this inspection reveals that the problem occurs in certain locations or during certain periods of time, the problem is likely due to interference from external radio waves. In addition, installing an additional component to the vehicle makes the vehicle more susceptible to interference from external radio waves. If such components are found, remove them, and then proceed to check the operation.
      • If interference from external radio waves is suspected, inquire the customer if the problem occurs in certain locations.
      • Move the vehicle to another location and perform the following procedure to check if the problem improves.
      • If a tool for checking radio waves such as a signal-strength meter is available, take measurements in the LF band (which is used by the vehicle antenna to create a detection area) and the RF band (which is used by the electrical key transmitter sub-assembly for signal transmission) in the vicinity of the vehicle to check where the radio waves might be present.

      Result

      Result Go to
      All operation checks fail. A
      All operation checks pass. B
      One of the operation checks passes. C

      B: Interference from external radio waves

      C: Proceed to check other problems (check each door using the symptom table) (Refer to PROBLEM SYMPTOMS TABLE  ).

      OK: Go to next step

  4. Perform the keyless access system check.
    1. Perform keyless access system check for the following antennas. (Refer to OPERATION CHECK  )
      1. Check the electrical key antenna (driver's door):
        Fig 4: Checking Electrical Key Antenna (Driver Door)
        G10216259Courtesy of SUBARU OF AMERICA, INC.

        Check if the wireless door lock buzzer beeps when the electrical key transmitter sub-assembly is within 0.7 - 1 m of the front door outer handle assembly (driver's door).

      2. Check the electrical key antenna (passenger's door):
        Fig 5: Checking Electrical Key Antenna (Passenger Door)
        G10216260Courtesy of SUBARU OF AMERICA, INC.

        Check if the wireless door lock buzzer beeps when the electrical key transmitter sub-assembly is within 0.7 - 1 m of the front door outer handle assembly (passenger's door).

      3. Check the indoor electrical key antenna no. 1 (front floor).
        Fig 6: Checking Indoor Electrical Key Antenna No. 1 (Front Floor)
        G10216261Courtesy of SUBARU OF AMERICA, INC.

        Check if the wireless door lock buzzer beeps when the electrical key transmitter sub-assembly is located at the inspection points.

      4. Check the indoor electrical key antenna no. 2 (rear floor):
        Fig 7: Checking Indoor Electrical Key Antenna No. 2 (Rear Floor)
        G10216262Courtesy of SUBARU OF AMERICA, INC.

        Check if the wireless door lock buzzer beeps when the electrical key transmitter sub-assembly is located at the inspection points.

      5. Check the electrical key antenna (trunk exterior antenna).
        Fig 8: Checking Electrical Key Antenna (Trunk Exterior Antenna)
        G10216263Courtesy of SUBARU OF AMERICA, INC.

        Check if the wireless door lock buzzer beeps when the electrical key transmitter sub-assembly is within 0.7 - 1 m of the electrical key antenna (trunk exterior antenna).

        Criteria: The wireless door lock buzzer beeps.

      Result

      Result Go to
      Failed all diagnostic mode unit inspections. A
      Failed some diagnostic mode unit inspections (door). B
      Failed some diagnostic mode unit inspections (indoor). C
      Failed some diagnostic mode unit inspections (outdoor). D
      Passed all diagnostic mode unit inspections. E

      B: Proceed to check other problems (check each door using the symptom table) (Refer to PROBLEM SYMPTOMS TABLE  ).

      C: Proceed to check other problems ("ROOM OSCILLATOR DOES NOT RECOGNIZE KEY") (Refer to INTERIOR COLLATION IS NG  ).

      D: Proceed to check other problems ("BACK DOOR ENTRY LOCK AND UNLOCK FUNCTIONS DO NOT OPERATE") (Refer to SMART TRUNK OPEN OPERATION DOES NOT WORK (WHEN THE TRANSMITTER IS LOCATED OUTSIDE TRUNK)  ).

      E: Replacement of the collation ECM (smart key ECM assembly)

      OK: Go to next step

  5. Inspect the electrical key transmitter sub-assembly unit.
    1. Check if other keys already registered to the vehicle can be used.

      Result

      Result Go to
      No other keys are registered to the vehicle. A
      Other keys are registered to the vehicle. B

      B: Go to Step  7.

      A: Go to next step

  6. Register a new electrical key transmitter sub-assembly.
    1. Register an electrical key transmitter sub-assembly. (Refer to the "immobilizer registration manual")

      Next

  7. Check the electrical key transmitter sub-assembly (operation).
    1. Check if the entry function works properly. (Refer to OPERATION CHECK  )

      Criteria: The entry function works properly.

      NG: Replacement of the collation ECM (smart key computer assembly)

      OK: END (electrical key transmitter sub-assembly malfunction)

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