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

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DTC Code DTC Name
  All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch
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DESCRIPTION

The main body ECU (multiplex network body ECU) receives switch signals from the power window regulator switch assembly on the front passenger door and activates the door lock motor on each door according to these signals.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

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PROCEDURE


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    READ VALUE USING GTS (Door Lock SW-Lock, Door Lock SW-Unlock)


    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.


      1. Body Electrical > Main Body > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Door Lock SW-Lock Power window regulator switch assembly lock signal OFF or ON

        OFF: Lock side of power window regulator switch assembly not pushed

        ON: Lock side of power window regulator switch assembly pushed

        		 -
        Door Lock SW-Unlock Power window regulator switch assembly unlock signal OFF or ON

        OFF: Unlock side of power window regulator switch assembly not pushed

        ON: Unlock side of power window regulator switch assembly pushed

        		 -




      1. Body Electrical > Main Body > Data List
        Tester Display
        Door Lock SW-Lock
        Door Lock SW-Unlock





      OK
      The GTS indicates ON or OFF according to the switch operation shown in the table.
      Result
      Proceed to
      OK
      NG

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    INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. Remove the power window regulator switch assembly.

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    2. Inspect the power window regulator switch assembly.

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      Result
      Proceed to
      OK
      NG

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    CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY -INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. for LHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        R4-7 (UL) - 4B-24 Always Below 1 Ω
        R4-12 (L) - 4B-25 Always Below 1 Ω
        R4-5 (GND) - Body ground Always Below 1 Ω
        4B-24 or R4-7 (UL) - Body ground Always 10 kΩ or higher
        4B-25 or R4-12 (L) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        S4-7 (UL) - 4B-24 Always Below 1 Ω
        S4-12 (L) - 4B-25 Always Below 1 Ω
        S4-5 (GND) - Body ground Always Below 1 Ω
        4B-24 or S4-7 (UL) - Body ground Always 10 kΩ or higher
        4B-25 or S4-12 (L) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

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    2. A01OFK1C02
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -

      Remove the main body ECU (multiplex network body ECU).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      MB-22 (UL1) - 4B-24 Always Below 1 Ω
      MB-20 (L1) - 4B-25 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

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

    • NG

      REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLYClick here