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. Detection Item DTC Detection Condition Trouble Area
B2341 Sensor (Motor) Failure 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 (Map light assembly)

  • Wire harness or connector
B2344 Position Failure 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 (Map light assembly)

  • Wire harness or connector

WIRING DIAGRAM

A0020X5E06

CAUTION / NOTICE / HINT

Note


  • If 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 LIN communication system. First, confirm that there are no malfunctions in the LIN communication system. Refer to How to Proceed with Troubleshooting.

    Click here

PROCEDURE


  1. CHECK SLIDING ROOF OPERATION


    1. Check the sliding roof auto operation.

      Click here

      OK
      Auto operation operates normally.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  2. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Sliding Roof > Clear DTCs

    2. Check for DTCs.


      Body Electrical > Sliding Roof > Trouble Codes
      OK
      DTCs B2341 and B2344 are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) 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.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) AND BODY GROUND) Click here

    OK

  4. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Sliding Roof > Clear DTCs

    2. Check for DTCs.


      Body Electrical > Sliding Roof > Trouble Codes
      OK
      DTCs B2341 and B2344 are not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE)

    NG

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

  5. CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) AND BODY GROUND)


    1. Disconnect the S3 sliding roof switch (map light assembly) connector.

    2. Disconnect the S5 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
      S5-5 (CLS) - S3-12 (CLS) Always Below 1 Ω
      S5-5 (CLS) - Body ground Always 10 kΩ or higher
      S3-12 (CLS) - Body ground Always 10 kΩ or higher
      S5-7 (OPN) - S3-11 (OPN) Always Below 1 Ω
      S5-7 (OPN) - Body ground Always 10 kΩ or higher
      S3-11 (OPN) - Body ground Always 10 kΩ or higher
      S5-6 (DWN) - S3-24 (DOWN) Always Below 1 Ω
      S5-6 (DWN) - Body ground Always 10 kΩ or higher
      S3-24 (DOWN) - Body ground Always 10 kΩ or higher
      S5-4 (UP) - S3-23 (UP) Always Below 1 Ω
      S5-4 (UP) - Body ground Always 10 kΩ or higher
      S3-23 (UP) - Body ground Always 10 kΩ or higher
      S3-19 (GND) - Body ground Always Below 1 Ω
      S5-12 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY)


    1. Remove the sliding roof switch (map light assembly).

      Click here

    2. Inspect the sliding roof switch (map light assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY) Click here