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 consists of the motor, regulator and ECU.

This DTC is stored when the ECU built into the regulator motor 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.

Note


  • When a power window regulator is reinstalled or replaced, the power window control system must be initialized.

  • After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operation at least 5 times:


    1. Close the power window by fully pulling up the power window switch and holding it in the auto up position.

    2. Open the power window by fully pushing down the power window switch.

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 sec.

 Multiplex network master switch
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 sec.

  • Multiplex network master switch

  • Front power window regulator motor LH*1

  • Front power window regulator motor 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 sec.

  • Power window regulator switch

  • Front power window regulator motor RH*1

  • Front power window regulator motor LH*2

  • Harness or connector

RL-Door Motor (for 5 Door)
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 sec.

  • Rear power window regulator switch LH

  • Rear power window regulator motor LH

  • Harness or connector
RR-Door Motor (for 5 Door)
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 sec.

  • Rear power window regulator switch RH

  • Rear power window regulator motor RH

  • Harness or connector

WIRING DIAGRAM


  1. for Driver Side:

    A00JZLIE01

  2. for Front Passenger Side:

    A00JX4VE01

  3. for Rear LH (for 5 Door):

    A00K1C2E05

  4. for Rear RH (for 5 Door):

    A00K1C2E06

INSPECTION PROCEDURE

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.

      Result
      Result Proceed to
      No DTCs output A
      LIN communication DTCs are output B
      DTC B2312 is output C

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    C

    CHECK DTC OUTPUT Click here

    A

    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.

      Result
      Result Proceed to
      DTC output from multiplex network master switch A
      DTC output from front power window regulator motor LH*1, RH*2 B
      DTC output from front power window regulator motor RH*1, LH*2 C
      DTC output from rear power window regulator motor LH*3 D
      DTC output from rear power window regulator motor RH*3 E

      • *1: for LHD

      • *2: for RHD

      • *3: for 5 Door


    B

    READ VALUE USING INTELLIGENT TESTER (MULTIPLEX NETWORK MASTER SWITCH) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (POWER WINDOW REGULATOR SWITCH) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR SWITCH LH) Click here

    E

    READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR SWITCH RH) Click here

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

  3. READ VALUE USING INTELLIGENT TESTER (MULTIPLEX NETWORK MASTER SWITCH)


    1. Use the Data List to check if the power window regulator motor 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: Driver side power window manual up switch operated

      OFF: Driver side power window switch not operated

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

      ON: Driver side power window manual down switch operated

      OFF: Driver side power window switch not operated

      		 -
      OK
      On tester 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 C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

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

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

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


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the K4*1 or J9*2 multiplex network master switch connector.

    2. Disconnect the K7*1 or J7*2 power window regulator motor connector.

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      K4-20 (UP) - K7-10 (UP) Always Below 1 Ω
      K4-15 (DOWN) - K7-7 (DOWN) Always Below 1 Ω
      K4-20 (UP) - Body ground Always 10 kΩ or higher
      K4-15 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD:
      Tester Connection Condition Specified Condition
      J9-20 (UP) - J7-10 (UP) Always Below 1 Ω
      J9-15 (DOWN) - J7-7 (DOWN) Always Below 1 Ω
      J9-20 (UP) - Body ground Always 10 kΩ or higher
      J9-15 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  5. READ VALUE USING INTELLIGENT TESTER (POWER WINDOW REGULATOR SWITCH)


    1. Use the Data List to check if the power window regulator motor 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 passenger side power window auto up/down switch operated

      OFF: Front passenger side power window regulator switch not operated

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

      ON: Front passenger side power window manual up switch operated

      OFF: Front passenger side power window regulator switch not operated

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

      ON: Front passenger side power window manual down switch operated

      OFF: Front passenger side power window regulator switch not operated

      		 -
      OK
      On tester 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 C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  6. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A00JYGUE13

      Remove the power window regulator switch 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) Manual up operation Below 1 Ω
      7 (DOWN) - 1 (GND) Manual down operation Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up/down operation Below 1 Ω
      6 (UP) - 1 (GND) Not operated 10 kΩ or higher
      7 (DOWN) - 1 (GND) Not operated 10 kΩ or higher
      8 (AUTO) - 1 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the J1*1 or K10*2 power window regulator switch connector.

    2. Disconnect the J7*1 or K7*2 power window regulator motor connector.

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      J1-6 (UP) - J7-10 (UP) Always Below 1 Ω
      J1-7 (DOWN) - J7-7 (DOWN) Always Below 1 Ω
      J1-8 (AUTO) - J1-4 (AUTO) Always Below 1 Ω
      J1-6 (UP) - Body ground Always 10 kΩ or higher
      J1-7 (DOWN) - Body ground Always 10 kΩ or higher
      J1-8 (AUTO) - Body ground Always 10 kΩ or higher
      for RHD:
      Tester Connection Condition Specified Condition
      K10-6 (UP) - K7-10 (UP) Always Below 1 Ω
      K10-7 (DOWN) - K7-7 (DOWN) Always Below 1 Ω
      K10-8 (AUTO) - K7-4 (AUTO) Always Below 1 Ω
      K10-6 (UP) - Body ground Always 10 kΩ or higher
      K10-7 (DOWN) - Body ground Always 10 kΩ or higher
      K10-8 (AUTO) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  8. READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR SWITCH LH)


    1. Use the Data List to check if the power window regulator motor 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 LH auto up/down switch operated

      OFF: Rear power window LH switch not operated

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

      ON: Rear power window LH manual up switch operated

      OFF: Rear power window LH switch not operated

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

      ON: Rear power window LH manual down switch operated

      OFF: Rear power window LH switch not operated

      		 -
      OK
      On tester 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

  9. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH


    1. A00JYGUE13

      Remove the rear power window regulator switch 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) Manual up operation Below 1 Ω
      7 (DOWN) - 1 (GND) Manual down operation Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up/down operation Below 1 Ω
      6 (UP) - 1 (GND) Not operated 10 kΩ or higher
      7 (DOWN) - 1 (GND) Not operated 10 kΩ or higher
      8 (AUTO) - 1 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

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


    1. Disconnect the M2 rear power window regulator switch connector.

    2. Disconnect the M4 rear power window regulator motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M2-6 (UP) - M4-10 (UP) Always Below 1 Ω
      M2-7 (DOWN) - M4-7 (DOWN) Always Below 1 Ω
      M2-8 (AUTO) - M4-4 (AUTO) Always Below 1 Ω
      M2-6 (UP) - Body ground Always 10 kΩ or higher
      M2-7 (DOWN) - Body ground Always 10 kΩ or higher
      M2-8 (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

  11. READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR SWITCH RH)


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

      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 RH auto up/down switch operated

      OFF: Rear power window RH switch not operated

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

      ON: Rear power window RH manual up switch operated

      OFF: Rear power window RH switch not operated

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

      ON: Rear power window RH manual down switch operated

      OFF: Rear power window RH switch not operated

      		 -
      OK
      On tester 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

  12. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH


    1. A00JYGUE13

      Remove the rear power window regulator switch 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) Manual up operation Below 1 Ω
      7 (DOWN) - 1 (GND) Manual down operation Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up/down operation Below 1 Ω
      6 (UP) - 1 (GND) Not operated 10 kΩ or higher
      7 (DOWN) - 1 (GND) Not operated 10 kΩ or higher
      8 (AUTO) - 1 (GND) Not operated 10 kΩ or higher

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

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


    1. Disconnect the L2 rear power window regulator switch connector.

    2. Disconnect the L4 rear power window regulator motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L2-6 (UP) - L4-10 (UP) Always Below 1 Ω
      L2-7 (DOWN) - L4-7 (DOWN) Always Below 1 Ω
      L2-8 (AUTO) - L4-4 (AUTO) Always Below 1 Ω
      L2-6 (UP) - Body ground Always 10 kΩ or higher
      L2-7 (DOWN) - Body ground Always 10 kΩ or higher
      L2-8 (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