SLIDING ROOF SYSTEM, Diagnostic DTC:B2341 and B2344

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

DESCRIPTION

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

When the sliding roof drive gear sub-assembly (sliding roof ECU) 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 enters fail-safe mode due to a problem with the motor)

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

  • Map light assembly (Sliding roof control switch)

  • Harness or connector

B2344

Position Failure

Position failure (When the sliding roof ECU enters fail-safe mode due to a problem with the gear position)

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

  • Map light assembly (Sliding roof control switch)

  • Harness or connector

WIRING DIAGRAM

B271000E19

CAUTION / NOTICE / HINT

Note:

  • When the sliding roof drive gear sub-assembly (sliding roof ECU) 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

    Result

    Result

    Proceed to

    Auto operation operates normally

    A

    Auto operation does not operate normally

    B
    B

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

    A

  2. CHECK DTC OUTPUT

    1. Clear the DTCs.

      Click here

      Body Electrical > Sliding Roof > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Sliding Roof > Trouble Codes

      OK

      DTC B2341 or B2344 is not output.

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    NG

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

    Click here

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

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

      Click here

      OK

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

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - SLIDING ROOF CONTROL SWITCH 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.

      Click here

      Body Electrical > Sliding Roof > Trouble Codes

      OK

      DTC B2341 or B2344 is not output.

    Result

    Proceed to

    OK

    NG
    OK

    END (PROBLEM DUE TO INITIALIZATION FAILURE)

    NG

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

    Click here

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

    1. Disconnect the Q8 sliding roof drive gear sub-assembly (sliding roof ECU) connector.

    2. Disconnect the Q16 map light assembly (sliding roof control switch) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q8-5 (CLS) - Q16-8 (CLS)

      Always

      Below 1 Ω

      Q8-5 (CLS) - Body ground

      Always

      10 kΩ or higher

      Q8-7 (OPN) - Q16-7 (OPN)

      Always

      Below 1 Ω

      Q8-7 (OPN) - Body ground

      Always

      10 kΩ or higher

      Q8-6 (DWN) - Q16-17 (DOWN)

      Always

      Below 1 Ω

      Q8-6 (DWN) - Body ground

      Always

      10 kΩ or higher

      Q8-4 (UP) - Q16-16 (UP)

      Always

      Below 1 Ω

      Q8-4 (UP) - Body ground

      Always

      10 kΩ or higher

      Q16-20 (GND) - Body ground

      Always

      Below 1 Ω

      Q8-12 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT MAP LIGHT ASSEMBLY (SLIDING ROOF CONTROL SWITCH)

    1. E330413N01

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

      Click here

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      16 (UP) - 20 (GND)

      UP switch is pressed

      Below 1 Ω

      16 (UP) - 20 (GND)

      UP switch is not pressed

      10 kΩ or higher

      17 (DOWN) - 20 (GND)

      DOWN switch is pressed

      Below 1 Ω

      17 (DOWN) - 20 (GND)

      DOWN switch is not pressed

      10 kΩ or higher

      7 (OPN) - 20 (GND)

      OPEN switch is pressed

      Below 1 Ω

      7 (OPN) - 20 (GND)

      OPEN switch is not pressed

      10 kΩ or higher

      8 (CLS) - 20 (GND)

      CLOSE switch is pressed

      Below 1 Ω

      8 (CLS) - 20 (GND)

      CLOSE switch is not pressed

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

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

    Click here

    NG

    REPLACE MAP LIGHT ASSEMBLY (SLIDING ROOF CONTROL SWITCH)

    Click here