POWER WINDOW CONTROL SYSTEM (for Models with Jam Protection Function on 4 Windows), Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Power Window Switch Malfunction

DESCRIPTION

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

This DTC is output 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, power window regulator switch assembly or rear power window regulator switch assembly is stuck.

Master Switch (Multiplex Network Master Switch Assembly)
DTC No. DTC Detection Condition Trouble Area
B2312

  • Multiplex network master switch assembly stuck

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

  • Door control switch (multiplex network master switch assembly) operated for 20 seconds or more

 Multiplex network master switch assembly
D-Door Motor (Power Window Regulator Motor Assembly (for Driver Door))
DTC No. DTC Detection Condition Trouble Area
B2312

  • 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
P-Door Motor (Power Window Regulator Motor Assembly (for Front Passenger Door))
DTC No. DTC Detection Condition Trouble Area
B2312

  • 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
RL-Door Motor (Power Window Regulator Motor Assembly (for Rear LH Door))
DTC No. DTC Detection Condition Trouble Area
B2312

  • Rear power window regulator switch assembly (for LH door) stuck

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

  • Rear power window regulator switch assembly (for LH door)

  • Power window regulator motor assembly (for rear LH door)

  • Wire harness or connector
RR-Door Motor (Power Window Regulator Motor Assembly (for Rear RH Door))
DTC No. DTC Detection Condition Trouble Area
B2312

  • Rear power window regulator switch assembly (for RH door) stuck

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

  • Rear power window regulator switch assembly (for RH door)

  • Power window regulator motor assembly (for rear RH door)

  • Wire harness or connector

WIRING DIAGRAM


  1. for Driver Door

    B000H7ZE06

  2. for Front Passenger Door

    B000MK8E99

  3. for Rear LH Door

    B000HV1E01

  4. for Rear RH Door

    B000HV1E02

INSPECTION PROCEDURE

Tech Tips

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

Note


  • DTC B2312 can be stored in the multiplex network master switch assembly and in each power window regulator motor assembly (power window ECU).

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2312 is not output.

    NG

    CHECK DTC OUTPUT Click here

    OK

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

  2. 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
      DTC output from power window regulator motor assembly (for rear LH door) D
      DTC output from power window regulator motor assembly (for rear RH door) E

    B

    READ VALUE USING INTELLIGENT TESTER (D-DOOR MOTOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (P-DOOR MOTOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (RL-DOOR MOTOR) Click here

    E

    READ VALUE USING INTELLIGENT TESTER (RR-DOOR MOTOR) Click here

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

  3. READ VALUE USING INTELLIGENT TESTER (D-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / D-Door Motor / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      D-Door Motor (Power Window Regulator Motor Assembly (for Driver Door)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Up SW Driver door power window manual up switch signal / ON or OFF

      ON: Driver door power window manual up switch operated

      OFF: Driver door power window manual up switch not operated

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

      ON: Driver door power window manual down switch operated

      OFF: Driver door power window manual down switch not operated

      		 -
      OK
      On the intelligent tester screen, ON or OFF is displayed accordingly.

    NG

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

    OK

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

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


    1. Disconnect the multiplex network master switch assembly connector.

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

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      K3-20 (UP) - Body ground Always 10 kΩ or higher
      K3-15 (DOWN) - Body ground Always 10 kΩ or higher
      K9-10 (UP) - Body ground Always 10 kΩ or higher
      K9-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      J3-20 (UP) - Body ground Always 10 kΩ or higher
      J3-15 (DOWN) - Body ground Always 10 kΩ or higher
      J9-10 (UP) - Body ground Always 10 kΩ or higher
      J9-7 (DOWN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Replace the multiplex network master switch assembly Click here.


    NEXT

  6. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2312 is not output.

    NG

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

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

  7. READ VALUE USING INTELLIGENT TESTER (P-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / P-Door Motor / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      P-Door Motor (Power Window Regulator Motor Assembly (for Front Passenger Door))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Door P/W Auto SW Front passenger door power window auto switch signal / ON or OFF

      ON: Front passenger door power window auto switch operated

      OFF: Front passenger door power window auto switch not operated

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

      ON: Front passenger door power window manual up switch operated

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

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

      ON: Front passenger door power window manual down switch operated

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

      		 -
      OK
      On the intelligent tester screen, ON or OFF is displayed accordingly.

    NG

    INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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

  8. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. B000N6KE29
      Text in Illustration
      *a

      Component without harness connected

      (Power Window Regulator Switch Assembly)

      Remove the power window regulator switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Free 10 kΩ or higher
      7 (DOWN) - 1 (GND) Free 10 kΩ or higher
      8 (AUTO) - 1 (GND) Free 10 kΩ or higher

    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the power window regulator motor assembly (for front passenger door) connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      J4-6 (UP) - Body ground Always 10 kΩ or higher
      J4-8 (AUTO) - Body ground Always 10 kΩ or higher
      J4-7 (DOWN) - Body ground Always 10 kΩ or higher
      J9-10 (UP) - Body ground Always 10 kΩ or higher
      J9-4 (AUTO) - Body ground Always 10 kΩ or higher
      J9-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      K4-6 (UP) - Body ground Always 10 kΩ or higher
      K4-8 (AUTO) - Body ground Always 10 kΩ or higher
      K4-7 (DOWN) - Body ground Always 10 kΩ or higher
      K9-10 (UP) - Body ground Always 10 kΩ or higher
      K9-4 (AUTO) - Body ground Always 10 kΩ or higher
      K9-7 (DOWN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  10. READ VALUE USING INTELLIGENT TESTER (RL-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / RL-Door Motor / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      RL-Door Motor (Power Window Regulator Motor Assembly (for Rear LH Door))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RL Door P/W Auto SW Rear LH door power window auto switch signal / ON or OFF

      ON: Rear LH door power window auto switch operated

      OFF: Rear LH door power window auto switch not operated

      		 -
      RL Door P/W Up SW Rear LH door power window manual up switch signal / ON or OFF

      ON: Rear LH door power window manual up switch operated

      OFF: Rear LH door power window manual up switch not operated

      		 -
      RL Door P/W Down SW Rear LH door power window manual down switch signal / ON or OFF

      ON: Rear LH door power window manual down switch operated

      OFF: Rear LH door power window manual down switch not operated

      		 -
      OK
      On the intelligent tester screen, ON or OFF is displayed accordingly.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR) Click here

    OK

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

  11. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR)


    1. B000N6KE29
      Text in Illustration
      *a

      Component without harness connected

      (Rear Power Window Regulator Switch Assembly (for LH Door))

      Remove the rear power window regulator switch assembly (for LH door) Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Free 10 kΩ or higher
      7 (DOWN) - 1 (GND) Free 10 kΩ or higher
      8 (AUTO) - 1 (GND) Free 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR) Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH (FOR LH DOOR) - WINDOW REGULATOR MOTOR (FOR REAR LH DOOR))


    1. Disconnect the power window regulator motor assembly (for rear LH door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M4-6 (UP) - Body ground Always 10 kΩ or higher
      M4-7 (DOWN) - Body ground Always 10 kΩ or higher
      M4-8 (AUTO) - Body ground Always 10 kΩ or higher
      M2-10 (UP) - Body ground Always 10 kΩ or higher
      M2-7 (DOWN) - Body ground Always 10 kΩ or higher
      M2-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  13. READ VALUE USING INTELLIGENT TESTER (RR-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / RR-Door Motor / Data List.

    5. Read the Data List according to the display on the intelligent tester.

      RR-Door Motor (Power Window Regulator Motor Assembly (for Rear RH Door))
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door P/W Auto SW Rear RH door power window auto switch signal / ON or OFF

      ON: Rear RH door power window auto switch operated

      OFF: Rear RH door power window auto switch not operated

      		 -
      RR Door P/W Up SW Rear RH door power window manual up switch signal / ON or OFF

      ON: Rear RH door power window manual up switch operated

      OFF: Rear RH door power window manual up switch not operated

      		 -
      RR Door P/W Down SW Rear RH door power window manual down switch signal / ON or OFF

      ON: Rear RH door power window manual down switch operated

      OFF: Rear RH door power window manual down switch not operated

      		 -
      OK
      On the intelligent tester screen, ON or OFF is displayed accordingly.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR RH DOOR) Click here

    OK

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

  14. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR RH DOOR)


    1. B000N6KE29
      Text in Illustration
      *a

      Component without harness connected

      (Rear Power Window Regulator Switch Assembly (for RH Door))

      Remove the rear power window regulator switch assembly (for RH door) Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Free 10 kΩ or higher
      7 (DOWN) - 1 (GND) Free 10 kΩ or higher
      8 (AUTO) - 1 (GND) Free 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR RH DOOR) Click here

    OK

  15. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH (FOR RH DOOR) - WINDOW REGULATOR MOTOR (FOR REAR RH DOOR))


    1. Disconnect the power window regulator motor assembly (for rear RH door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L4-6 (UP) - Body ground Always 10 kΩ or higher
      L4-7 (DOWN) - Body ground Always 10 kΩ or higher
      L4-8 (AUTO) - Body ground Always 10 kΩ or higher
      L2-10 (UP) - Body ground Always 10 kΩ or higher
      L2-7 (DOWN) - Body ground Always 10 kΩ or higher
      L2-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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