WIRELESS DOOR LOCK CONTROL SYSTEM No Answer-Back

DESCRIPTION

In some cases, wireless door lock control functions are normal but the hazard warning light and/or wireless door lock buzzer answer-back function does not operate. In such cases, hazard warning light and wireless door lock buzzer signal outputs from the main body ECU (multiplex network body ECU) may be malfunctioning.

WIRING DIAGRAM

B00193ZE41

CAUTION / NOTICE / HINT

Note


  • The wireless door lock control system key reminder warning system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the wireless door lock control system after confirming that the communication system is functioning properly.

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Entry and Start System (for Entry Function).

PROCEDURE


  1. CUSTOMIZE SETTING


    1. Check the customize status of answer-back function has been default setting Click here.

      Result
      Result Proceed to
      The customize status of answer-back function has been default setting. A
      The customize status of answer-back function has not been default setting. B

    B

    PERFORM CUSTOMIZE FUNCTION Click here

    A

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS


    1. Check the wireless door lock control functions using the electrical key transmitter sub-assembly Click here.

      OK
      Wireless door lock control functions are operated normally.

    NG

    Go to PROBLEM SYMPTOMS TABLE Click here

    OK

  3. READ VALUE USING GTS (DOOR LOCK POSITION SWITCH)


    1. Use the Data List to check if the door lock positions are functioning properly.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Door Lock Pos Front door RH unlock detection switch signal / LOCK or UNLOCK

      LOCK: Front door RH locked

      UNLOCK: Front door RH unlocked

      		 -
      FL Door Lock Pos Front door LH unlock detection switch signal / LOCK or UNLOCK

      LOCK: Front door LH locked

      UNLOCK: Front door LH unlocked

      		 -
      RR-Door Lock Pos SW Rear door RH unlock detection switch signal / ON or OFF

      ON: Rear door RH unlocked

      OFF: Rear door RH locked

      		 -
      RL-Door Lock Pos SW Rear door LH unlock detection switch signal / ON or OFF

      ON: Rear door LH unlocked

      OFF: Rear door LH locked

      		 -
      OK
      On tester screen, each item changes between LOCK and UNLOCK (ON and OFF) according to above chart.

    NG

    Go to LIGHTING SYSTEM Click here

    OK

  4. CHECK WIRELESS ANSWER-BACK OPERATION


    1. Check the wireless answer-back operation using the electrical key transmitter sub-assembly.

      Result
      Result Proceed to
      Only wireless door lock buzzer answer-back does not occur. A
      Only hazard warning light answer-back does not occur. B

    A

    GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START Click here

    B

  5. CHECK HAZARD WARNING LIGHTS OPERATION


    1. Check that the hazard warning signal light blinks when the hazard warning signal switch is pressed.

      OK
      Hazard warning signal light is normal.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (for LHD) Click here

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (for RHD) Click here

    C

    Go to LIGHTING SYSTEM Click here