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POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312

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DTC Code DTC Name
B2312 Power Window Switch Malfunction
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DESCRIPTION

The power window regulator motor assemblies are operated by the multiplex network master switch assembly or power window regulator switch assembly. The power window regulator motor assemblies have motor, regulator and ECU functions.

This DTC is stored when the ECU built into a power window regulator motor assembly and multiplex network master switch assembly determine that the multiplex network master switch assembly or power window regulator switch assembly is stuck.

Table 1. Master Switch
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Multiplex network master switch assembly stuck

  • Multiplex network master switch assembly held in same position for more than 20 seconds

  • Multiplex network master switch assembly operated for 20 seconds or more

 Multiplex network master switch assembly
Table 2. D-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Multiplex network master switch assembly stuck

  • Multiplex network master switch assembly held in same position for more than 20 seconds

  • Multiplex network master switch assembly

  • Power window regulator motor assembly (for driver door)

  • Wire harness or connector
Table 3. P-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Power window regulator switch assembly stuck

  • Power window regulator switch assembly held in same position for more than 20 seconds

  • Power window regulator switch assembly

  • Power window regulator motor assembly (for front passenger door)

  • Wire harness or connector
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WIRING DIAGRAM


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  1. A01OFQME07

    for LHD

  2. A01FMJ7E08

    for RHD

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CAUTION / NOTICE / HINT

Note:

  • DTC B2312 is stored in the multiplex network master switch assembly and in each power window regulator motor assembly.

  • If a power window regulator motor assembly has been replaced with a new one, initialize the power window control system.

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

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

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Tip:

If DTC B2312 is not output again after the DTC has been cleared, the DTC was stored due to the switch being held in the same position continuously.

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PROCEDURE


  1. Click here

    CHECK FOR DTC


    1. Clear the DTCs.

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      1. Body Electrical > Master Switch > Clear DTCs



      1. Body Electrical > D-Door Motor > Clear DTCs



      1. Body Electrical > P-Door Motor > Clear DTCs


    2. Check for DTCs.

      Click here


      1. Body Electrical > Master Switch > Trouble Codes



      1. Body Electrical > D-Door Motor > Trouble Codes



      1. Body Electrical > P-Door Motor > Trouble Codes


      OK
      DTC B2312 is not output.
      Result
      Proceed to
      OK
      NG

    • OK

      END (DTC WAS STORED DUE TO SWITCH BEING OPERATED FOR 20 SECONDS OR MORE)

    • NGClick here
  2. Click here

    CHECK DTC OUTPUT


    1. Check the parts which the DTCs have been output from.

      Result
      Result Proceed to
      DTC output from multiplex network master switch assembly A
      DTC output from power window regulator motor assembly (for driver door) B
      DTC output from power window regulator motor assembly (for front passenger door) C

  3. Click here

    READ VALUE USING GTS (D-DOOR MOTOR)


    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 / D-Door Motor / Data List.

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


      1. Body Electrical > D-Door Motor > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        D Door P/W Up SW Driver door power window manual up switch signal OFF or ON

        OFF: Driver door power window manual up switch not being operated

        ON: Driver door power window manual up switch being operated

        		 -
        D Door P/W Down SW Driver door power window manual down switch signal OFF or ON

        OFF: Driver door power window manual down switch not being operated

        ON: Driver door power window manual down switch being operated

        		 -




      1. Body Electrical > D-Door Motor > Data List
        Tester Display
        D Door P/W Up SW
        D Door P/W Down SW





      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

  4. Click here

    CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER DOOR))


    1. for LHD


      1. Disconnect the S3 multiplex network master switch assembly connector.

      2. Disconnect the S2 power window regulator motor assembly (for driver door) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        S3-20 (UP) - Body ground Always 10 kΩ or higher
        S3-15 (DOWN) - Body ground Always 10 kΩ or higher
        S2-10 (UP) - Body ground Always 10 kΩ or higher
        S2-7 (DOWN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the R3 multiplex network master switch assembly connector.

      2. Disconnect the R2 power window regulator motor assembly (for driver door) connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        R3-20 (UP) - Body ground Always 10 kΩ or higher
        R3-15 (DOWN) - Body ground Always 10 kΩ or higher
        R2-10 (UP) - Body ground Always 10 kΩ or higher
        R2-7 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Replace the multiplex network master switch assembly.

      Click here

      Result
      Proceed to
      NEXT

  6. Click here

    CHECK FOR DTC


    1. Clear the DTCs.

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      1. Body Electrical > D-Door Motor > Clear DTCs


    2. Check for DTCs.

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      1. Body Electrical > D-Door Motor > Trouble Codes


      OK
      DTC B2312 is not output.
      Result
      Proceed to
      OK
      NG

    • OK

      END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

    • NG

      REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER DOOR)Click here

  7. Click here

    READ VALUE USING GTS (P-DOOR MOTOR)


    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 / P-Door Motor / Data List.

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


      1. Body Electrical > P-Door Motor > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        P Door P/W Auto SW Front passenger door power window auto switch signal OFF or ON

        OFF: Front passenger door power window auto switch not being operated

        ON: Front passenger door power window auto switch being operated

        		 -
        P Door P/W Up SW Front passenger door power window manual up switch signal OFF or ON

        OFF: Front passenger door power window manual up switch not being operated

        ON: Front passenger door power window manual up switch being operated

        		 -
        P Door P/W Down SW Front passenger door power window manual down switch signal OFF or ON

        OFF: Front passenger door power window manual down switch not being operated

        ON: Front passenger door power window manual down switch being operated

        		 -





      1. Body Electrical > P-Door Motor > Data List
        Tester Display
        P Door P/W Auto SW
        P Door P/W Up SW
        P Door P/W Down SW






      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

  8. Click here

    INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. Remove the power window regulator switch assembly.

      Click here

    2. Inspect the power window regulator switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

  9. Click here

    CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR FRONT PASSENGER DOOR))


    1. Disconnect the R2*1 or S2*2 power window regulator motor assembly (for front passenger door) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Table 4. for LHD
      Tester Connection Condition Specified Condition
      R4-2 (UP) - Body ground Always 10 kΩ or higher
      R4-4 (AUTO) - Body ground Always 10 kΩ or higher
      R4-10 (DOWN) - Body ground Always 10 kΩ or higher
      R2-10 (UP) - Body ground Always 10 kΩ or higher
      R2-4 (AUTO) - Body ground Always 10 kΩ or higher
      R2-7 (DOWN) - Body ground Always 10 kΩ or higher
      Table 5. for RHD
      Tester Connection Condition Specified Condition
      S4-2 (UP) - Body ground Always 10 kΩ or higher
      S4-4 (AUTO) - Body ground Always 10 kΩ or higher
      S4-10 (DOWN) - Body ground Always 10 kΩ or higher
      S2-10 (UP) - Body ground Always 10 kΩ or higher
      S2-4 (AUTO) - Body ground Always 10 kΩ or higher
      S2-7 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR FRONT PASSENGER DOOR)Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR