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

B0077SRE03

CAUTION / NOTICE / HINT

Note


  • The wireless door lock control system and key reminder warning system use 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.

    Click here

  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

PROCEDURE


  1. READ VALUE USING GTS (Hazard Answer Back, Wireless Buzzer Resp, Wireless Buzzer Vol)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Customize Setting / Wireless Door Lock.

    5. Select the setting by referring to the table below.


      Wireless Door Lock
      Tester Display Description Default Setting ECU
      Hazard Answer Back Function that flashes the hazard warning lights once when the doors are locked by wireless operation and twice when the doors are unlocked by wireless operation. ON 0:OFF,1:ON Main body ECU (Multiplex network body ECU)
      Wireless Buzzer Resp Wireless door lock buzzer response* ON 0:OFF,1:ON Main body ECU (Multiplex network body ECU)
      Wireless Buzzer Vol Wireless door lock buzzer volume* Level 5 0000:Level7,0001:Level6,0010:Level5,0011:Level4,0100:Level3,0101:Level2,0110:Level1,0111:Level0 Main body ECU (Multiplex network body ECU)

      • *: w/ Wireless Door Lock Buzzer Answer-back Function

      Result
      Result Proceed to
      Items are ON and except Level 0 A
      An item is OFF or Level 0 B

    B

    PERFORM CUSTOMIZE FUNCTION Click here

    A

  2. CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS


    1. Check the wireless door lock control function using the electrical key transmitter sub-assembly.

      Result
      Result Proceed to
      Wireless door lock/unlock operates properly. A
      Wireless door lock/unlock does not operate properly. B

    B

    GO TO PROBLEM SYMPTOMS TABLE Click here

    A

  3. READ VALUE USING GTS (FR Door Lock Pos, FL Door Lock Pos)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Main Body > Data List
      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

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Lock Pos
      FL Door Lock Pos
      OK
      The GTS display changes correctly in response to the lock/unlock operation.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) 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 ENTRY AND START SYSTEM (for Entry Function) Click here

    B

  5. CHECK HAZARD WARNING LIGHTS OPERATION


    1. Check that the hazard warning lights blink when the hazard warning signal switch is pressed.

      OK
      Hazard warning lights blink.
      Result
      Result Proceed to
      OK A
      NG (for Triple Beam Headlight) B
      NG (for Single Beam Headlight) C

    A

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

    B

    GO TO LIGHTING SYSTEM (Proceed to Hazard Warning Switch Circuit) Click here

    C

    GO TO LIGHTING SYSTEM (Proceed to Hazard Warning Switch Circuit) Click here