WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Entry and Start System) Only Wireless Control Function is Inoperative

DESCRIPTION

The door control receiver receives signals from the transmitter and sends these signals to the main body ECU. The main body ECU then controls all doors by sending lock/unlock signals to each door, and sends hazard flasher relay signals to the turn signal flasher relay (hazard warning lights).

WIRING DIAGRAM

A017DW2E03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS


    1. Check the wireless door lock control system function Click here.

      Result
      Result Proceed to
      The wireless door LOCK/UNLOCK function does not operate with transmitter A
      The power back door function does not operate with transmitter B
      The glass hatch function does not operate with transmitter C

    B

    GO TO POWER BACK DOOR SYSTEM Click here

    C

    GO TO GLASS HATCH OPENER SYSTEM Click here

    A

  2. CHECK DOOR CONTROL TRANSMITTER


    1. When another registered door control transmitter is used, check that the wireless operates normally.

      Result
      Result Proceed to
      Wireless door LOCK/UNLOCK function and door control transmitter that did not operate is electrical key transmitter A
      Wireless door LOCK/UNLOCK function function does not operate B

    B

    CHECK ROOM LIGHT ASSEMBLY Click here

    A

  3. CHECK TRANSMITTER LED ILLUMINATION


    1. Check that the transmitter's LED illuminates 3 times when the switch is pressed 3 times.

      Result
      Result Proceed to
      Transmitter's LED does not illuminate 3 times when switch is pressed 3 times A
      Transmitter's LED illuminates 3 times when switch is pressed 3 times B
      The transmitter's LED does not illuminate the second or third time C

      Tech Tips

      If the transmitter's LED does not illuminate the second or third time, replace the transmitter battery as it is depleted.


    B

    REPLACE DOOR CONTROL TRANSMITTER

    C

    REPLACE TRANSMITTER BATTERY Click here

    A

  4. INSPECT TRANSMITTER BATTERY


    1. Electrical key transmitter


      1. Remove the battery from the electrical key transmitter that does not operate. Attach a lead wire (0.6 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal Click here.

        A017F4XE02

        Note

        Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. A terminal may be deformed or damaged, and the battery will not be able to be installed correctly.

      2. Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.

      3. Using an oscilloscope, check the transmitter battery voltage waveform.

        Tech Tips

        Measure the transmitter battery voltage while pressing the LOCK or UNLOCK switch on the transmitter.

        A017G7KE01
        Standard voltage
        Item Content
        Tester Connection Battery positive (+) - Battery negative (-)
        Tool Setting 0.5 V/DIV., 100 ms/DIV.
        Condition Ignition switch OFF, all doors closed and lock switch pushed
        Specified Condition 2.2 to 3.2 V (Refer to the waveform)

    NG

    REPLACE TRANSMITTER BATTERY Click here

    OK

    REPLACE DOOR CONTROL TRANSMITTER

  5. CHECK ROOM LIGHT ASSEMBLY


    1. Check that the room light illumination operates normally.

      OK
      Room light operation normally.

    NG

    Go to LIGHTING SYSTEM Click here

    OK

  6. SWITCH TO SELF-DIAGNOSTIC MODE


    1. A017CBTE20

      Switch to self-diagnostic mode by operating the ignition key cylinder.


      1. Make sure the vehicle is in its initial condition. Then insert the key into the ignition key cylinder and remove it.

      2. Within 5 seconds of removing the key, insert the key into the ignition key cylinder (ignition switch OFF). Then turn the ignition switch to the ON position and then OFF.

      3. Within 30 seconds of turning the ignition switch OFF, perform the following operation 9 times: turn the ignition switch to the ON position and then OFF.

        Note

        If the system cannot enter self-diagnostic mode, the system returns to normal mode.

        Tech Tips


        • Turning the ignition switch to the ON position after the above operations have been completed ends self-diagnostic mode.

        • Do not lock or unlock doors during self-diagnostic mode.

    2. Check that the system has switched to self-diagnostic mode by checking the room light flash pattern.

      OK
      Flash pattern is same as illustration.

    NG

    INSPECT UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

  7. CHECK BY SELF DIAGNOSTIC MODE

    A017FS2E03

    1. Inspect the diagnosis outputs when the door control transmitter switch is held down. The diagnosis outputs can be checked by the flash patterns of the room light.

      Result
      Result Proceed to
      Unmatching recognition code is output A
      Normal waves (light flash patterns) are output B
      No diagnosis outputs C

    B

    REPLACE MAIN BODY ECU

    C

    CHECK DOOR CONTROL RECEIVER (RESPONSE) Click here

    A

  8. REGISTER RECOGNITION CODE


    1. Check that the system can be switched to rewrite mode or add mode, and that a recognition code can be registered Click here.

      OK
      Recognition code can be registered.

    NG

    REPLACE DOOR CONTROL TRANSMITTER Click here

    OK

    END

  9. CHECK DOOR CONTROL RECEIVER (RESPONSE)


    1. Prepare the door control transmitter of another vehicle.

    2. Held down the door control transmitter,s switch.

    3. Check that an unmatching recognition code is output.

      OK
      Unmatching recognition code is output.

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

    REPLACE DOOR CONTROL TRANSMITTER

  10. REPLACE DOOR CONTROL RECEIVER


    1. Temporarily replace the door lock control receiver with a new or normally functioning one Click here.


    NEXT

  11. REGISTER RECOGNITION CODE


    1. Perform the REGISTRATION procedures Click here.


    NEXT

  12. CHECK DOOR CONTROL RECEIVER (OPERATION)


    1. Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

      OK
      Doors can be locked and unlocked with transmitter.

    NG

    REPLACE MAIN BODY ECU

    OK

    END (DOOR CONTROL RECEIVER IS DEFECTIVE)

  13. INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    1. A017BCWE05

      Remove the unlock warning switch Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 Free 10 kΩ or higher
      Pushed Below 1 Ω

    3. Reconnect the unlock warning switch.


    NG

    REPLACE UNLOCK WARNING SWITCH ASSEMBLY Click here

    OK

  14. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - MAIN BODY ECU AND BODY GROUND)

    A017BCGE04

    1. Disconnect the D16 unlock warning switch connector.

    2. Disconnect the D9 main body ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      D16-1 - D9-5 (KSW) Always Below 1 Ω
      D16-2 - Body ground
      D9-5 (KSW) or D16-1 - Body ground Always 10 kΩ or higher

    4. Reconnect the unlock warning switch connector.

    5. Reconnect the main body ECU connector


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK DOOR CONTROL RECEIVER (OUTPUT)


    1. for LHD:


      1. Measure the voltage according to the value(s) in the table below.

        A017CAPE01
        Standard voltage
        Tester Connection Switch Condition Specified Condition
        O28-2 (RDA) - Body ground Transmitter switch ON → OFF (No key in ignition key cylinder, all doors closed) Below 1 V → 6 to 7 V → Below 1 V

    2. for RHD:


      1. Measure the voltage according to the value(s) in the table below.

        A017G5EE01
        Standard voltage
        Tester Connection Switch Condition Specified Condition
        O38-2 (RDA) - Body ground Transmitter switch ON → OFF (No key in ignition key cylinder, all doors closed) Below 1 V → 6 to 7 V → Below 1 V

    NG

    REPLACE DOOR CONTROL TRANSMITTER Click here

    OK

    REPLACE MAIN BODY ECU

  16. REPLACE DOOR CONTROL TRANSMITTER


    1. Temporarily replace the door control transmitter module with a new or normally functioning one.


    NEXT

  17. REGISTER RECOGNITION CODE


    1. Perform the REGISTRATION procedures Click here.


    NEXT

  18. CHECK DOOR CONTROL TRANSMITTER MODULE


    1. Check that the doors can be locked and unlocked by using the transmitter LOCK and UNLOCK switches.

      OK
      Doors can be locked and unlocked with transmitter.

    NG

    REPLACE DOOR CONTROL RECEIVER Click here

    OK

    END (DOOR CONTROL TRANSMITTER MODULE IS DEFECTIVE)