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 sub-assembly) detects a motor malfunction and the roof sunshade operation is stopped, DTC B2341 is output.

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

DTC Code DTC Detection Condition Trouble Area
B2341 Sensor (motor) failure (When the ECU enters fail-safe mode due to a problem with the motor)
  • Roof sunshade ECU (Sliding roof drive gear sub-assembly)

  • Roof sunshade switch (Map light assembly)

  • Wire harness or connector

B2344 Position failure (When the ECU enters fail-safe mode due to a problem with the gear position)
  • Roof sunshade ECU (Sliding roof drive gear sub-assembly)

  • Roof sunshade switch (Map light assembly)

  • Wire harness or connector

WIRING DIAGRAM

A01NH5TE02

INSPECTION PROCEDURE

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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

PROCEDURE


  1. CHECK ROOF SUNSHADE OPERATION


    1. Check the roof sunshade auto operation Click here.

      OK
      Auto operation operates normally.

    NG
    OK
  2. CHECK DTC OUTPUT


    1. Clear the DTC Click here.

    2. Recheck for DTCs.

      OK
      DTC B2341 or B2344 is not output.

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


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

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

    NG
    OK
  4. CHECK DTC OUTPUT


    1. Clear the DTC Click here.

    2. Recheck for DTCs.

      OK
      DTC B2341 or B2344 is not output.

    NG
    OK
  5. CHECK HARNESS AND CONNECTOR (ROOF SUNSHADE ECU - ROOF SUNSHADE SWITCH)


    1. A01NGSZE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Roof Sunshade ECU (Sliding Roof Drive Gear Sub-assembly))

      *2

      Front view of wire harness connector

      (to Roof Sunshade Switch (Map Light Assembly))

      Disconnect the T10 switch connector.

    2. Disconnect the T2 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T2-9 (CLS) - T10-38 (CLS) Always Below 1 Ω
      T2-9 (CLS) - Body ground Always 10 kΩ or higher
      T2-7 (OPN) - T10-37 (OPN) Always Below 1 Ω
      T2-7 (OPN) - Body ground Always 10 kΩ or higher
      T10-40 (GND) - Body ground Always Below 1 Ω
      T2-2 (E) - Body ground Always Below 1 Ω

    NG
    OK
  6. INSPECT ROOF SUNSHADE SWITCH (MAP LIGHT ASSEMBLY)


    1. A01NG9KE01
      Text in Illustration
      *1

      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 Switch Condition Specified Condition
      T10-38 (CLS) - T10-40 (GND) CLOSE switch is pressed Below 1 Ω
      T10-38 (CLS) - T10-40 (GND) CLOSE switch is not pressed 10 kΩ or higher
      T10-37 (OPN) - T10-40 (GND) OPEN switch is pressed Below 1 Ω
      T10-37 (OPN) - T10-40 (GND) OPEN switch is not pressed 10 kΩ or higher

    NG
    OK