POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312, B2315

DTC Code DTC Name
B2312 Driver Side Master Switch ON Stuck
B2315 Passenger Side P/W Switch ON Stuck

DESCRIPTION

The power window regulator motor assembly is operated by the power window master switch assembly or power window regulator switch assembly. The power window regulator motor assembly has motor, regulator and ECU functions. These DTCs are output when the ECU built into the regulator motor and master switch determines that the power window master switch assembly or power window regulator switch assembly is stuck.

Note


  • When the power window regulator master switch assembly, power window regulator switch assembly and power window regulator motor assembly is reinstalled or replaced, the power window control system must be initialized Click here.

  • When the jam protection function malfunctions and prevents the door glass from closing completely, the following procedure can be used to cancel the jam protection function and allow the door glass to be closed*1.


    • Repeat the AUTO UP maintain → jam protection function operation twice in succession*2.

    • The third repeat of the AUTO UP maintain operation will cause the position of the upper edge of the door glass to be relearned, allowing the door glass to be closed.


      • *1: In some cases, the state of the door glass or regulator may prevent the glass from being closed, even in this mode.

      • *2: If any action other that the AUTO UP operation (DOWN operation, IG OFF, timer-operated OFF, index operation, etc.) is performed between the operation of the jam protection function and the AUTO UP maintain, this count will be reset.

DTC No. DTC Detection Condition Trouble Area
B2312

  • The power window regulator master switch is stuck

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

 Power window regulator master switch assembly
B2315

  • The power window regulator switch is stuck

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

  • Power window regulator master switch assembly

  • Power window regulator switch assembly

  • Wire harness and connector

WIRING DIAGRAM

A004J8CE02

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check the DTCs Click here.

      Result
      Result Proceed to
      DTC B2312 is output A
      DTC B2315 is output B

    A

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    B

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Master Switch / Data List.

    5. According to the display on the GTS, read the Data List.

      Master Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      P Door P/W Auto SW Front passenger side power window auto switch signal / ON or OFF

      ON: Front passenger side power window auto up/down switch operated

      OFF: Front passenger side power window 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 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 switch not operated

      		 -
      OK
      The GTS display changes normally when regulator switch is operated.

    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - POWER WINDOW MOTOR)


    1. Disconnect the E8*1 or F6*2 power window regulator master switch assembly connector.

    2. Disconnect the F6*1 or E8*2 power window regulator switch assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      E8-2 (UART) - F6-2 (UART) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      E8-2 (UART)*1 - Body ground Always 10 kΩ or higher
      F6-2 (UART)*2 - Body ground Always 10 kΩ or higher

      • *1: for LHD

      • *2: for RHD


    OK

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR