POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Power Window Switch Malfunction

DESCRIPTION


The power window regulator motor is driven by operating the power window regulator switch. The power window regulator motor assembly consists of the motor and ECU.

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

Tech Tips

This DTC may be stored for all the windows.

Master Switch
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The multiplex network master switch is stuck.

  • The multiplex network master switch is held in the same position for more than 20 seconds.

 Multiplex network master switch assembly
D-Door Motor
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The multiplex network master switch is stuck.

  • The multiplex network master switch is held in the same position for more than 20 seconds.

  • Multiplex network master switch assembly

  • Front power window regulator motor assembly LH*1

  • Front power window regulator motor assembly RH*2

  • Harness or connector
P-Door Motor
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The power window regulator switch is stuck.

  • The power window regulator switch is held in the same position for more than 20 seconds.

  • Front power window regulator switch assembly

  • Front power window regulator motor assembly RH*1

  • Front power window regulator motor assembly LH*2

  • Harness or connector
RR-Door Motor
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The rear power window regulator switch RH is stuck.

  • The rear power window regulator switch RH is held in the same position for more than 20 seconds.

  • Rear power window regulator switch assembly RH

  • Rear power window regulator motor assembly RH

  • Harness or connector
RL-Door Motor
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The rear power window regulator switch LH is stuck.

  • The rear power window regulator switch LH is held in the same position for more than 20 seconds.

  • Rear power window regulator switch assembly LH

  • Rear power window regulator motor assembly LH

  • Harness or connector

WIRING DIAGRAM


  1. for Driver Side

    A01FUJPE05

  2. for Front Passenger Side

    A01FUZWE05

  3. for Rear LH

    A01FVX4E07

  4. for Rear RH

    A01FVX4E08

INSPECTION PROCEDURE

Note


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

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

  • If the power window regulator motor assembly and door window regulator sub-assembly have been removed and installed, or if the power window regulator motor assembly was reused when a door glass or door glass run was replaced, initialize the power window control system Click here.

Tech Tips

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTCs Click here.

      OK
      No DTCs output.

    NG

    CHECK DTC OUTPUT Click here

    OK

    END (DTC WAS STORED 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 Click here.

      Result
      Result Proceed to
      DTC output from multiplex network master switch A
      DTC output from front power window regulator motor (for driver side) B
      DTC output from front power window regulator motor (for front passenger side) C
      DTC output from rear power window regulator motor (for rear RH side) D
      DTC output from rear power window regulator motor (for rear LH side) E

    B

    READ VALUE USING GTS (D DOOR P/W SW) Click here

    C

    READ VALUE USING GTS (P DOOR P/W SW) Click here

    D

    READ VALUE USING GTS (RR DOOR P/W SW) Click here

    E

    READ VALUE USING GTS (RL DOOR P/W SW) Click here

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

  3. READ VALUE USING GTS (D DOOR P/W SW)


    • *1: for LHD

    • *2: for RHD


    1. Use the Data List to check if the front power window regulator motor LH*1, RH*2 is functioning properly Click here.

      D-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Up SW Driver side power window manual up signal / ON or OFF

      ON: Front power window switch LH*1, RH*2 manual up operated

      OFF: Front power window switch LH*1, RH*2 not operated

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

      ON: Front power window switch LH*1, RH*2 manual down operated

      OFF: Front power window switch LH*1, RH*2 not operated

      		 -
      OK
      On GTS screen, each item changes between ON and OFF according to above chart.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Click here

    D

    CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Click here

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


    1. Disconnect the Q25 multiplex network master switch assembly connector.

    2. Disconnect the Q17 power window regulator motor assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q25-20 (UP) - Q17-10 (UP1) Always Below 1 Ω
      Q25-15 (DOWN) - Q17-7 (DWN1) Always Below 1 Ω
      Q25-20 (UP) - Body ground Always 10 kΩ or higher
      Q25-15 (DOWN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Temporarily replace the multiplex network master switch assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs output.

    NG

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

  6. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. Disconnect the Q10 multiplex network master switch assembly connector.

    2. Disconnect the Q2 power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q10-20 (UP) - Q2-10 (UP1) Always Below 1 Ω
      Q10-15 (DOWN) - Q2-7 (DWN1) Always Below 1 Ω
      Q10-20 (UP) - Body ground Always 10 kΩ or higher
      Q10-15 (DOWN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Temporarily replace the multiplex network master switch assembly with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.

    3. Check for DTCs Click here.

      OK
      No DTCs output.

    NG

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

  8. READ VALUE USING GTS (P DOOR P/W SW)


    • *1: for LHD

    • *2: for RHD


    1. Use the Data List to check if the front power window regulator motor RH*1, LH*2 is functioning properly Click here.

      P-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Door P/W Auto SW Front passenger side power window auto up/down signal / ON or OFF

      ON: Front power window switch RH*1, LH*2 auto up/down operated

      OFF: Front power window switch RH*1, LH*2 not operated

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

      ON: Front power window switch RH*1, LH*2 manual up operated

      OFF: Front power window switch RH*1, LH*2 not operated

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

      ON: Front power window switch RH*1, LH*2 manual down operated

      OFF: Front power window switch RH*1, LH*2 not operated

      		 -
      OK
      On GTS screen, each item changes between ON and OFF according to above chart.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    D

    INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  9. INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A01FQ9VE04

      Remove the front 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
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (GND) Auto up/down operation Below 1 Ω
      2 (UP) - 5 (GND) Not operated 10 kΩ or higher
      10 (DOWN) - 5 (GND) Not operated 10 kΩ or higher
      4 (AUTO) - 5 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. Disconnect the Q9 front power window regulator switch assembly connector.

    2. Disconnect the Q2 front power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q9-2 (UP) - Q2-10 (UP1) Always Below 1 Ω
      Q9-10 (DOWN) - Q2-7 (DWN1) Always Below 1 Ω
      Q9-4 (AUTO) - Q2-4 (AUTO) Always Below 1 Ω
      Q9-2 (UP) - Body ground Always 10 kΩ or higher
      Q9-10 (DOWN) - Body ground Always 10 kΩ or higher
      Q9-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  11. INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A01FQ9VE04

      Remove the front 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
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (GND) Auto up/down operation Below 1 Ω
      2 (UP) - 5 (GND) Not operated 10 kΩ or higher
      10 (DOWN) - 5 (GND) Not operated 10 kΩ or higher
      4 (AUTO) - 5 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


    1. Disconnect the Q24 front power window regulator switch assembly connector.

    2. Disconnect the Q17 front power window regulator motor assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q24-2 (UP) - Q17-10 (UP1) Always Below 1 Ω
      Q24-10 (DOWN) - Q17-7 (DWN1) Always Below 1 Ω
      Q24-4 (AUTO) - Q17-4 (AUTO) Always Below 1 Ω
      Q24-2 (UP) - Body ground Always 10 kΩ or higher
      Q24-10 (DOWN) - Body ground Always 10 kΩ or higher
      Q24-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  13. READ VALUE USING GTS (RR DOOR P/W SW)


    1. Use the Data List to check if the rear power window regulator motor RH is functioning properly Click here.

      RR-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door P/W Auto SW Rear power window RH auto up/down signal / ON or OFF

      ON: Rear power window switch RH auto up/down operated

      OFF: Rear power window switch RH not operated

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

      ON: Rear power window switch RH manual up operated

      OFF: Rear power window switch RH not operated

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

      ON: Rear power window switch RH manual down operated

      OFF: Rear power window switch RH not operated

      		 -
      OK
      On GTS screen, each item changes between ON and OFF according to above chart.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  14. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH


    1. A01FQ9VE04

      Remove the rear power window regulator switch assembly RH Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (GND) Auto up/down operation Below 1 Ω
      2 (UP) - 5 (GND) Not operated 10 kΩ or higher
      10 (DOWN) - 5 (GND) Not operated 10 kΩ or higher
      4 (AUTO) - 5 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

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


    1. Disconnect the R6 rear power window regulator switch assembly RH connector.

    2. Disconnect the R1 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R6-2 (UP) - R1-10 (UP1) Always Below 1 Ω
      R6-10 (DOWN) - R1-7 (DWN1) Always Below 1 Ω
      R6-4 (AUTO) - R1-4 (AUTO) Always Below 1 Ω
      R6-2 (UP) - Body ground Always 10 kΩ or higher
      R6-10 (DOWN) - Body ground Always 10 kΩ or higher
      R6-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  16. READ VALUE USING GTS (RL DOOR P/W SW)


    1. Use the Data List to check if the rear power window regulator motor LH is functioning properly Click here.

      RL-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RL Door P/W Auto SW Rear power window LH auto up/down signal / ON or OFF

      ON: Rear power window switch LH auto up/down operated

      OFF: Rear power window switch LH not operated

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

      ON: Rear power window switch LH manual up operated

      OFF: Rear power window switch LH not operated

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

      ON: Rear power window switch LH manual down operated

      OFF: Rear power window switch LH not operated

      		 -
      OK
      On GTS screen, each item changes between ON and OFF according to above chart.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  17. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH


    1. A01FQ9VE04

      Remove the rear power window regulator switch assembly LH Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (GND) Auto up/down operation Below 1 Ω
      2 (UP) - 5 (GND) Not operated 10 kΩ or higher
      10 (DOWN) - 5 (GND) Not operated 10 kΩ or higher
      4 (AUTO) - 5 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

  18. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


    1. Disconnect the R14 rear power window regulator switch assembly LH connector.

    2. Disconnect the R9 rear power window regulator motor assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R14-2 (UP) - R9-10 (UP1) Always Below 1 Ω
      R14-10 (DOWN) - R9-7 (DWN1) Always Below 1 Ω
      R14-4 (AUTO) - R9-4 (AUTO) Always Below 1 Ω
      R14-2 (UP) - Body ground Always 10 kΩ or higher
      R14-10 (DOWN) - Body ground Always 10 kΩ or higher
      R14-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here