POWER WINDOW CONTROL SYSTEM, 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 an ECU built into a power window regulator motor assembly and multiplex network master switch assembly determines that the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assembly* is stuck.


Master Switch
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The multiplex network master switch assembly is 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
D-Door Motor
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


  • The multiplex network master switch assembly is stuck

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

  • Multiplex network master switch assembly

  • Front power window regulator motor assembly LH (for LHD)

  • Front power window regulator motor assembly RH (for RHD)

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

Either condition is met:


  • The Power window regulator switch assembly is stuck

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

  • Power window regulator switch assembly

  • Front power window regulator motor assembly RH (for LHD)

  • Front power window regulator motor assembly LH (for RHD)

  • Harness or connector
RL-Door Motor (for 5 Door)
DTC Code DTC Detection Condition Trouble Area
B2312

Either condition is met:


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

  • Rear power window regulator switch assembly (for Rear LH Door) held in same position for more than 20 seconds

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

  • 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:


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

  • Rear power window regulator switch assembly (for Rear RH Door) held in same position for more than 20 seconds

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

  • Rear power window regulator motor RH

  • Harness or connector

WIRING DIAGRAM


  1. for Driver Side:

    B001FLYE01

  2. for Front Passenger Side:

    B001FD3E01

  3. for Rear LH (for 5 Door):

    B001ERHE01

  4. for Rear RH (for 5 Door):

    B001ERHE02

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 Click here.

  • 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 Click here.

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.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2312 is not output.

    OK

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

    NG

  2. CHECK DTC OUTPUT


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

      Result
      Result Proceed to
      DTC output from Master Switch A
      DTC output from D-Door Motor B
      DTC output from P-Door Motor C
      DTC output from RL-Door Motor (for 5 Door) D
      DTC output from RR-Door Motor (for 5 Door) E

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    C

    READ VALUE USING GTS (P-DOOR MOTOR) Click here

    D

    READ VALUE USING GTS (RL-DOOR MOTOR) Click here

    E

    READ VALUE USING GTS (RR-DOOR MOTOR) Click here

    B

  3. READ VALUE USING GTS (D-DOOR MOTOR)


    1. Read the Data List according to the display on the GTS Click here.

      D-Door Motor
      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

      		 -
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (for LHD) C
      NG (for RHD) D

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    D

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

    C

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


    1. Disconnect the K4 multiplex network master switch assembly connector.

    2. Disconnect the K7 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
      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

    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.

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) Click here

    NG

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

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


    1. Disconnect the J9 multiplex network master switch assembly connector.

    2. Disconnect the J7 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
      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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


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


    NEXT

  9. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2312 is not output.

    OK

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE) Click here

    NG

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  10. READ VALUE USING GTS (P-DOOR MOTOR)


    1. Read the Data List according to the display on the GTS Click here.

      P-Door Motor
      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

      		 -
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

  11. 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
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

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

    C

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    A

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


    1. Disconnect the J1 power window regulator switch assembly connector.

    2. Disconnect the J7 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
      J1-6 (UP) - J7-10 (UP) Always Below 1 Ω
      J1-7 (DOWN) - J7-7 (DOWN) Always Below 1 Ω
      J1-6 (UP) - Body ground Always 10 kΩ or higher
      J1-7 (DOWN) - Body ground Always 10 kΩ or higher

    OK

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the K10 power window regulator switch assembly connector.

    2. Disconnect the K7 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
      K10-6 (UP) - K7-10 (UP) Always Below 1 Ω
      K10-7 (DOWN) - K7-7 (DOWN) Always Below 1 Ω
      K10-6 (UP) - Body ground Always 10 kΩ or higher
      K10-7 (DOWN) - Body ground Always 10 kΩ or higher

    OK

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. READ VALUE USING GTS (RL-DOOR MOTOR)


    1. Read the Data List according to the display on the GTS Click here.

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

      OFF: Rear LH door power window auto switch not being operated

      ON: Rear LH door power window auto switch being operated

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

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

      ON: Rear LH door power window manual up switch being operated

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

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

      ON: Rear LH door power window manual down switch being operated

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

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    NG

  15. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH


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

    2. Inspect the rear power window regulator switch assembly LH Click here.


    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

  16. 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 assembly LH connector.

    2. Disconnect the M4 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
      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

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  17. READ VALUE USING GTS (RR-DOOR MOTOR)


    1. Read the Data List according to the display on the GTS Click here.

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

      OFF: Rear RH door power window auto switch not being operated

      ON: Rear RH door power window auto switch being operated

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

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

      ON: Rear RH door power window manual up switch being operated

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

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

      ON: Rear RH door power window manual down switch being operated

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

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    NG

  18. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH


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

    2. Inspect the rear power window regulator switch assembly RH Click here.


    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

  19. 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 assembly RH connector.

    2. Disconnect the L4 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
      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

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR