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SLIDING ROOF SYSTEM, Diagnostic DTC:B2341, B2344

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DTC Code DTC Name
B2341 Sensor (Motor) Failure
B2344 Position Failure
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DESCRIPTION

When the sliding roof ECU (sliding roof drive gear sub-assembly) detects a motor malfunction and the sliding roof operation is stopped, DTC B2341 is stored.

When the sliding roof ECU (sliding roof drive gear sub-assembly) detects a gear position malfunction and the sliding roof operation is stopped, DTC B2344 is stored.

DTC No. DTC Detection Condition Trouble Area
B2341 Sensor (motor) failure (When the sliding roof ECU (sliding roof drive gear sub-assembly) enters fail-safe mode due to a problem with the motor)

  • Sliding roof ECU (Sliding roof drive gear sub-assembly)

  • Sliding roof switch (Roof console box assembly)

  • Wire harness or connector
B2344 Position failure (When the sliding roof ECU (sliding roof drive gear sub-assembly) enters fail-safe mode due to a problem with the gear position)

  • Sliding roof ECU (Sliding roof drive gear sub-assembly)

  • Sliding roof switch (Roof console box assembly)

  • Wire harness or connector
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • When the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear sub-assembly) must be initialized (Click here).

  • The sliding roof system uses the CAN and LIN communication systems. First, confirm that there are no malfunctions in the CAN and LIN communication systems. Refer to How to Proceed with Troubleshooting (Click here).

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PROCEDURE


  1. Click here

    CHECK SLIDING ROOF OPERATION


    1. Check the sliding roof auto operation (Click here).

      OK
      Auto operation operates normally.

  2. Click here

    CHECK DTC OUTPUT


    1. Clear the DTCs (Click here).

    2. Recheck for DTCs.

      OK
      DTC B2341 or B2344 is not output.

    • OK

      USE SIMULATION METHOD TO CHECK (Click here)

    • NG

      REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (Click here)

  3. Click here

    INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)


    1. Check that the sliding roof ECU (sliding roof drive gear sub-assembly) can be initialized (Click here).

      OK
      Sliding roof ECU (sliding roof drive gear sub-assembly) can be initialized.

  4. Click here

    CHECK DTC OUTPUT


    1. Clear the DTCs (Click here).

    2. Recheck for DTCs.

      OK
      DTC B2341 or B2344 is not output.

    • OK

      END (PROBLEM DUE TO INITIALIZATION FAILURE)

    • NG

      REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (Click here)

  5. Click here

    CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - SLIDING ROOF SWITCH AND BODY GROUND)


    1. Disconnect the T10 sliding roof switch (roof console box assembly) connector.

    2. Disconnect the T4 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T4-5 (CLS) - T10-12 (CLS) Always Below 1 Ω
      T4-5 (CLS) - Body ground Always 10 kΩ or higher
      T4-7 (OPN) - T10-11 (OPN) Always Below 1 Ω
      T4-7 (OPN) - Body ground Always 10 kΩ or higher
      T4-6 (DWN) - T10-24 (DOWN) Always Below 1 Ω
      T4-6 (DWN) - Body ground Always 10 kΩ or higher
      T4-4 (UP) - T10-23 (UP) Always Below 1 Ω
      T4-4 (UP) - Body ground Always 10 kΩ or higher
      T10-19 (GND) - Body ground Always Below 1 Ω
      T4-12 (E) - Body ground Always Below 1 Ω

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    INSPECT SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)


    1. A0005A2E02

      Remove the sliding roof switch (roof console box assembly) (Click here).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      23 (UP) - 19 (GND) UP switch is pressed Below 1 Ω
      23 (UP) - 19 (GND) UP switch is not pressed 10 kΩ or higher
      24 (DOWN) - 19 (GND) DOWN switch is pressed Below 1 Ω
      24 (DOWN) - 19 (GND) DOWN switch is not pressed 10 kΩ or higher
      11 (OPN) - 19 (GND) OPEN switch is pressed Below 1 Ω
      11 (OPN) - 19 (GND) OPEN switch is not pressed 10 kΩ or higher
      12 (CLS) - 19 (GND) CLOSE switch is pressed Below 1 Ω
      12 (CLS) - 19 (GND) CLOSE switch is not pressed 10 kΩ or higher
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (Sliding Roof Switch (Roof Console Box Assembly))

    • Ok

      REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (Click here)

    • NG

      REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY) (Click here)