SLIDING ROOF SYSTEM, Diagnostic DTC:B2341, B2344

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

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 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 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

WIRING DIAGRAM

A01HML2E02

INSPECTION PROCEDURE

Note


  • When the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, it requires initialization 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 the How to Proceed with Troubleshooting procedure Click here.

PROCEDURE


  1. CHECK SLIDING ROOF OPERATION


    1. Check the sliding roof auto operation Click here.

      OK
      Auto operation operates normally.

    NG

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

    OK

  2. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs.

      OK
      DTC B2341 or B2344 is not output.

    NG

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

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. 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.

    NG

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

    OK

  4. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs.

      OK
      DTC B2341 or B2344 is not output.

    NG

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

    OK

    END (PROBLEM DUE TO INITIALIZATION FAILURE)

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


    1. Disconnect the S12 sliding roof switch (roof console box assembly) connector.

    2. Disconnect the S4 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
      S4-5 (CLS) - S12-2 (CLS) Always Below 1 Ω
      S4-5 (CLS) - Body ground Always 10 kΩ or higher
      S4-7 (OPN) - S12-3 (OPN) Always Below 1 Ω
      S4-7 (OPN) - Body ground Always 10 kΩ or higher
      S4-6 (DWN) - S12-4 (DOWN) Always Below 1 Ω
      S4-6 (DWN) - Body ground Always 10 kΩ or higher
      S4-4 (UP) - S12-5 (UP) Always Below 1 Ω
      S4-4 (UP) - Body ground Always 10 kΩ or higher
      S12-1 (GND) - Body ground Always Below 1 Ω
      S4-12 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)


    1. A01HMS5E01
      Text in Illustration
      *a

      Component without harness connected

      (Sliding Roof Switch (Roof Console Box Assembly))

      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
      5 (UP) - 1 (GND) UP switch is pressed Below 1 Ω
      5 (UP) - 1 (GND) UP switch is not pressed 10 kΩ or higher
      4 (DOWN) - 1 (GND) DOWN switch is pressed Below 1 Ω
      4 (DOWN) - 1 (GND) DOWN switch is not pressed 10 kΩ or higher
      3 (OPN) - 1 (GND) OPEN switch is pressed Below 1 Ω
      3 (OPN) - 1 (GND) OPEN switch is not pressed 10 kΩ or higher
      2 (CLS) - 1 (GND) CLOSE switch is pressed Below 1 Ω
      2 (CLS) - 1 (GND) CLOSE switch is not pressed 10 kΩ or higher

    NG

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

    OK

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