POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door Key Cylinder

DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the multiplex network master switch assembly and driver door key cylinder lock or unlock switch signals from the front door lock assembly LH*1 or front door lock assembly RH*2. The main body ECU (multiplex network body ECU) activates the door lock motor on each door according to these signals.


WIRING DIAGRAM

A0001CZE06

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the vehicle power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • 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 DOOR LOCK OPERATION


    1. Check door lock operation.

      Click here

      Result
      Result Proceed to
      All doors cannot be locked by multiplex network master switch assembly A
      All doors cannot be locked by driver door key cylinder B

    B

    READ VALUE USING GTS (Door Key SW-Lock, D Door Key SW-UL) Click here

    A

  2. READ VALUE USING GTS (LIN COMMUNICATION SYSTEM)


    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) for LHD: Click here for RHD: Click here

    NG

  3. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Replace the multiplex network master switch assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK DOOR LOCK OPERATION


    1. Check that all doors can be locked and unlocked by the multiplex network master switch assembly.

      Click here

      OK
      All doors can be locked and unlocked by the multiplex network master switch assembly.
      Result
      Proceed to
      OK
      NG

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

    NG

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

  5. READ VALUE USING GTS (Door Key SW-Lock, D Door Key SW-UL)


    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 / 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
      Door Key SW-Lock Driver door key-linked lock/unlock switch lock signal OFF or ON

      OFF: Driver door key cylinder not turned to lock position

      ON: Driver door key cylinder turned to lock position

      		 -
      D Door Key SW-UL Driver door key-linked lock/unlock switch unlock signal OFF or ON

      OFF: Driver door key cylinder not turned to unlock position

      ON: Driver door key cylinder turned to unlock position

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      Door Key SW-Lock
      D Door Key SW-UL
      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) for LHD: Click here for RHD: Click here

    NG

  6. INSPECT FRONT DOOR LOCK ASSEMBLY (for Driver Side)


    1. for LHD:


      1. Remove the front door lock assembly LH.

        Click here

      2. Inspect the front door lock assembly LH.

        Click here

    2. for RHD:


      1. Remove the front door lock assembly RH.

        Click here

      2. Inspect the front door lock assembly RH.

        Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FRONT DOOR LOCK ASSEMBLY (for Driver Side) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY [for Driver Side] - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND BODY GROUND)


    1. for LHD:


      1. Disconnect the M6 front door lock assembly LH connector.

      2. Disconnect the I48 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        M6-9 (L) - I48-29 (L2) Always Below 1 Ω
        M6-10 (UL) - I48-2 (UL3) Always Below 1 Ω
        M6-7 (E) - Body ground Always Below 1 Ω
        M6-9 (L) or I48-29 (L2) - Body ground Always 10 kΩ or higher
        M6-10 (UL) or I48-2 (UL3) - Body ground Always 10 kΩ or higher

    2. for RHD:


      1. Disconnect the L6 front door lock assembly RH connector.

      2. Disconnect the I48 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        L6-6 (L) - I48-29 (L2) Always Below 1 Ω
        L6-5 (UL) - I48-2 (UL3) Always Below 1 Ω
        L6-8 (E) - Body ground Always Below 1 Ω
        L6-6 (L) or I48-29 (L2) - Body ground Always 10 kΩ or higher
        L6-5 (UL) or I48-2 (UL3) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR