ROOF SUNSHADE SYSTEM, Diagnostic DTC:B2341, B2344

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

DESCRIPTION

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

When the roof sunshade ECU (sliding roof drive gear assembly) detects a gear position malfunction and the roof sunshade 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 roof sunshade ECU (sliding roof drive gear assembly) enters fail-safe mode due to a problem with the motor)

  • Roof sunshade ECU (Sliding roof drive gear assembly)

  • Roof sunshade switch (Map light assembly)

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

  • Roof sunshade ECU (Sliding roof drive gear assembly)

  • Roof sunshade switch (Map light assembly)

  • Wire harness or connector

WIRING DIAGRAM

A01KRXPE03

CAUTION / NOTICE / HINT

Note


  • When the roof sunshade ECU (sliding roof drive gear assembly) is removed and reinstalled or replaced, it requires initialization.

    Click here

  • The roof sunshade system uses the LIN communication system. First, confirm that there are no malfunctions in the LIN communication system. Refer to the How to Proceed with Troubleshooting procedure.

    Click here

PROCEDURE


  1. CHECK ROOF SUNSHADE OPERATION


    1. Check the roof sunshade auto operation.

      Click here

      OK
      Auto operation operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    INITIALIZE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR 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
      DTC B2341 or B2344 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here

  3. INITIALIZE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY)


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

      Click here

      OK
      Roof sunshade ECU (sliding roof drive gear assembly) can be initialized.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - ROOF SUNSHADE 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
      DTC B2341 or B2344 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE)

    NG

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here

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


    1. Disconnect the O8 roof sunshade switch (map light assembly) connector.

    2. Disconnect the a1 roof sunshade ECU (sliding roof drive gear assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a1-5 (CLOSE) - O8-13 (CLS) Always Below 1 Ω
      a1-5 (CLOSE) - Body ground Always 10 kΩ or higher
      a1-7 (OPEN) - O8-12 (OPN) Always Below 1 Ω
      a1-7 (OPEN) - Body ground Always 10 kΩ or higher
      O8-11 (GND) - Body ground Always Below 1 Ω
      a1-12 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT ROOF SUNSHADE SWITCH (MAP LIGHT ASSEMBLY)


    1. A01KR8TC01
      *a

      Component without harness connected

      (Roof Sunshade Switch (Map Light Assembly))

      Remove the roof sunshade switch (map light assembly).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      12 (OPN) - 11 (GND) Open switch is pressed Below 1 Ω
      12 (OPN) - 11 (GND) Open switch is not pressed 10 kΩ or higher
      13 (CLS) - 11 (GND) Close switch is pressed Below 1 Ω
      13 (CLS) - 11 (GND) Close switch is not pressed 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here

    NG

    REPLACE ROOF SUNSHADE SWITCH (MAP LIGHT ASSEMBLY) Click here