WIRELESS DOOR LOCK CONTROL SYSTEM(w/o Entry and Start 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(s) does not operate. In such cases, hazard warning light and wireless door lock buzzer signal outputs from the main body ECU (network gateway ECU) may be malfunctioning.

WIRING DIAGRAM

A004I51E05

PROCEDURE


  1. READ VALUE USING GTS (ANSWER-BACK OPERATION)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Utility / Customize / Wireless Door Lock.

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

      Display Default Content Setting Relevant ECU
      Hazard Answer Back ON

      When the doors are locked by wireless operation, the hazard warning lights flash once.

      When the doors are unlocked by wireless operation, the hazard warning lights flash twice.

      		 OFF or ON Main body ECU (network gateway ECU)
      Wireless Buzzer Resp* ON Wireless door lock buzzer response OFF or ON Main body ECU (network gateway ECU)
      Wireless Buzzer Vol* Level 5 Wireless door lock buzzer volume Level 7, Level 6, Level 5, Level 4, Level 3, Level 2, Level 1 or Level 0 Main body ECU (network gateway ECU)

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

      Result
      Result Proceed to
      Both items are ON and except Level 0 A
      Either 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 door control transmitter module set sub-assembly.

      Result
      Result Proceed to
      Wireless door lock/unlock operates normally (w/ Wireless Door Lock Buzzer Answer-back Function). A
      Wireless door lock/unlock operates normally (w/o Wireless Door Lock Buzzer Answer-back Function). B
      Wireless door lock/unlock does not operate normally. C

    B

    HAZARD WARNING LIGHTS OPERATION Click here

    C

    GO TO PROBLEM SYMPTOMS TABLE Click here

    A

  3. CHECK WIRELESS ANSWER-BACK OPERATION


    1. Check the wireless answer-back operation using the door control transmitter module set 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

    B

    HAZARD WARNING LIGHTS OPERATION Click here

    A

  4. PERFORM ACTIVE TEST USING GTS (WIRELESS DOOR LOCK BUZZER)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Active Test.

    5. Perform the Active Test according to the display on the GTS.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Wireless Buzzer Turns the wireless door lock buzzer ON/OFF -
      Result
      Result Proceed to
      Wireless door lock buzzer does not turn on/off. A
      Wireless door lock buzzer turns on/off. B

    B

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

    A

  5. CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU)


    1. Disconnect the A63 wireless door lock buzzer connector.

    2. Disconnect the A73 main body ECU (network gateway ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A63-1 (+) - A73-1 (BZR) Always Below 1 Ω
      A63-2 (-) - Body ground Always Below 1 Ω
      A63-1 (+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. REPLACE WIRELESS DOOR LOCK BUZZER


    1. Temporarily replace the wireless door lock buzzer with a new one Click here.


    NEXT

  7. CHECK WIRELESS DOOR LOCK BUZZER OPERATION


    1. Check the operation of the wireless answer-back function.

      OK
      Wireless answer-back function operates normally.

    OK

    END (WIRELESS DOOR LOCK BUZZER WAS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

  8. HAZARD WARNING LIGHTS OPERATION


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

      OK
      Hazard warning light signal is normally.

    NG

    GO TO LIGHTING SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    OK

  9. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly Click here.

    2. Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

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

      A004K1FE01
      Text in Illustration
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3B-14 - MB-3 (HZR) Always Below 1 Ω
      3B-16 - MB-3 (HZR) Always Below 1 Ω

    OK

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here