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

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DTC Code DTC Name
  All Doors LOCK/UNLOCK Functions do not Operate Via Door Key Cylinder
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DESCRIPTION

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

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WIRING DIAGRAM


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  1. B006XBLE08
    Table 1.
    *1 Main Body ECU (Multiplex Network Body ECU)
    *2 Front Door Lock with Motor Assembly LH

    for LHD

  2. B006XBLE09

    for RHD

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CAUTION / NOTICE / HINT

Note:

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


    • *: w/ Smart Entry and Start System

  • The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before performing this troubleshooting procedure, make sure to perform an on-vehicle inspection to confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*

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    • *: w/ Door Control Battery

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PROCEDURE


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


    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 / Data List.

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


      1. 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

        		 -




      1. Body Electrical > Main Body > Data List
        Tester Display
        Door Key SW-Lock
        D Door Key SW-UL





      Result
      Proceed to
      OK
      NG

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    INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY


    1. for LHD


      1. Remove the front door lock with motor assembly LH.

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      2. Inspect the front door lock with motor assembly LH.

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    2. for RHD


      1. Remove the front door lock with motor assembly RH.

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      2. Inspect the front door lock with motor assembly RH.

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      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

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    CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. for LHD


      1. Disconnect the K53 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        O15-9 (L) - K53-18 (L2) Always Below 1 Ω
        O15-10 (UL) - K53-17 (UL3) Always Below 1 Ω
        O15-7 (E) - Body ground Always Below 1 Ω
        O15-9 (L) or K53-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        O15-10 (UL) or K53-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the K53 main body ECU (multiplex network body ECU) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N15-6 (L) - K53-18 (L2) Always Below 1 Ω
        N15-5 (UL) - K53-17 (UL3) Always Below 1 Ω
        N15-7 (E) - Body ground Always Below 1 Ω
        N15-6 (L) or K53-18 (L2) - Other terminals and body ground Always 10 kΩ or higher
        N15-5 (UL) or K53-17 (UL3) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

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

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR