POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly via LIN communication system. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

B004A7AE01
*1 Multiplex Network Master Switch Assembly
*2 Front Multiplex Network Door ECU (for Driver Door)
*3 Main Body ECU (Multiplex Network Body ECU)
*4 LIN Communication Line

CAUTION / NOTICE / HINT

Note


  • The power door lock control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power door lock control system after confirming that the communication systems are functioning properly.

    Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

PROCEDURE


  1. CHECK POWER WINDOW CONTROL SYSTEM


    1. Check that the power window operates normally via multiplex network master switch assembly.

      Click here

      OK
      Each power window operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    NG

  2. READ VALUE USING GTS (Door Lock Switch Status, Door Unlock Switch Status)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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


      Body Electrical > Master Switch > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Door Lock Switch Status Multiplex network master switch assembly lock signal OFF or ON

      OFF: Lock side of multiplex network master switch assembly not pushed

      ON: Lock side of multiplex network master switch assembly pushed

      		 -
      Door Unlock Switch Status Multiplex network master switch assembly unlock signal OFF or ON

      OFF: Unlock side of multiplex network master switch assembly not pushed

      ON: Unlock side of multiplex network master switch assembly pushed

      		 -

      Body Electrical > Master Switch > Data List
      Tester Display
      Door Lock Switch Status
      Door Unlock Switch Status
      OK
      On the GTS screen, ON or OFF is displayed for each item according to the table above.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here