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Home >> Toyota >> 2018 >> Highlander XLE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 234 (Panoramic Moon Roof - Diagnostic Codes & Symptom Tests - (Hybrid)) >> Panoramic Moon Roof System >> DTC B2341: Sensor (Motor) Failure; DTC B2344: Position Failure [02/2014 - ] >> Procedure

DTC B2341: Sensor (Motor) Failure; DTC B2344: Position Failure [02/2014 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Sliding Roof > Clear DTCs 

      Body Electrical > Sliding Sunshade > Clear DTCs 

    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Sliding Roof > Trouble Codes 

      Body Electrical > Sliding Sunshade > Trouble Codes 

      OK

      DTCs B2341 and B2344 are not output.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016]  Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

    Result:  3

    NG 

    See step  2

  2. CHECK DTC OUTPUT 
    1. Check the parts which the DTCs have been output from.

      Result

      Result Proceed to
      DTC output from sliding roof ECU (sliding roof drive gear assembly) A
      DTC output from roof sunshade ECU (sliding roof drive gear assembly) B

    Result:  2

    B 

    See step  9

    Result:  1

    A 

    See step  3

  3. CHECK SLIDING ROOF OPERATION 
    1. Check the sliding roof auto operation function.

      Refer to OPERATION CHECK [02/2014 - ]

      OK

      Auto operation function operates normally.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  5

    Result:  1

    OK 

    See step  4

  4. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      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

    Result:  1

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016]  Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

    Result:  2

    NG 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

  5. INITIALIZE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) 
    1. Check that the sliding roof ECU (sliding roof drive gear assembly) can be initialized.

      Refer to INITIALIZATION [02/2014 - ]

      OK

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

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  7

    Result:  1

    OK 

    See step  6

  6. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      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

    Result:  1

    OK 

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE) 

    Result:  2

    NG 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

  7. CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - MAP LIGHT ASSEMBLY AND BODY GROUND) 
    1. Disconnect the T1 sliding roof ECU (sliding roof drive gear assembly) connector.
    2. Disconnect the S1 map light assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T1-5 (CLS) - S1-5 (CLS) Always Below 1 Ω
      T1-5 (CLS) or S1-5 (CLS) - Body ground Always 10 kΩ or higher
      T1-7 (OPN) - S1-6 (OPN) Always Below 1 Ω
      T1-7 (OPN) or S1-6 (OPN) - Body ground Always 10 kΩ or higher
      T1-2 (TILT) - S1-7 (VENT) Always Below 1 Ω
      T1-2 (TILT) or S1-7 (VENT) - Body ground Always 10 kΩ or higher
      T1-6 (OPN) - S1-17 (OPN) Always Below 1 Ω
      T1-6 (OPN) or S1-17 (OPN) - Body ground Always 10 kΩ or higher
      T1-4 (CLS) - S1-16 (CLS) Always Below 1 Ω
      T1-4 (CLS) or S1-16 (CLS) - Body ground Always 10 kΩ or higher
      T1-12 (E) - Body ground Always Below 1 Ω
      S1-1 (GND) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  8

  8. INSPECT MAP LIGHT ASSEMBLY 
    1. Remove the map light assembly.

      Refer to REMOVAL [02/2014 - ]

    2. Inspect the map light assembly.

      Refer to INSPECTION [02/2014 - ]

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

    Result:  2

    NG 

    REPLACE MAP LIGHT ASSEMBLY. Refer to  REMOVAL [02/2014 - ] 

  9. CHECK ROOF SUNSHADE OPERATION 
    1. Check the roof sunshade auto operation function.

      Refer to OPERATION CHECK [02/2014 - ]

      OK

      Auto operation function operates normally.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  11

    Result:  1

    OK 

    See step  10

  10. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Sliding Sunshade > Clear DTCs 

    2. Check for DTCs.

      Body Electrical > Sliding Sunshade > Trouble Codes 

      OK

      DTCs B2341 and B2344 are not output.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2014 - 11/2016]  Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] 

    Result:  2

    NG 

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

  11. INITIALIZE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) 
    1. Check that the roof sunshade ECU (sliding roof drive gear assembly) can be initialized.

      Refer to INITIALIZATION [02/2014 - ]

      OK

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

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    See step  13

    Result:  1

    OK 

    See step  12

  12. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [02/2014 - ]

      Body Electrical > Sliding Sunshade > Clear DTCs 

    2. Check for DTCs.

      Body Electrical > Sliding Sunshade > Trouble Codes 

      OK

      DTCs B2341 and B2344 are not output.

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE) 

    Result:  2

    NG 

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

  13. CHECK HARNESS AND CONNECTOR (ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) - MAP LIGHT ASSEMBLY AND BODY GROUND) 
    1. Disconnect the T2 roof sunshade ECU (sliding roof drive gear assembly) connector.
    2. Disconnect the S1 map light assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      T2-5 (CLS) - S1-5 (CLS) Always Below 1 Ω
      T2-5 (CLS) or S1-5 (CLS) - Body ground Always 10 kΩ or higher
      T2-7 (OPN) - S1-6 (OPN) Always Below 1 Ω
      T2-7 (OPN) or S1-6 (OPN) - Body ground Always 10 kΩ or higher
      T2-2 (TILT) - S1-7 (VENT) Always Below 1 Ω
      T2-2 (TILT) or S1-7 (VENT) - Body ground Always 10 kΩ or higher
      T2-6 (OPN) - S1-17 (OPN) Always Below 1 Ω
      T2-6 (OPN) or S1-17 (OPN) - Body ground Always 10 kΩ or higher
      T2-4 (CLS) - S1-16 (CLS) Always Below 1 Ω
      T2-4 (CLS) or S1-16 (CLS) - Body ground Always 10 kΩ or higher
      T2-12 (E) - Body ground Always Below 1 Ω
      S1-1 (GND) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  1

    OK 

    See step  14

  14. INSPECT MAP LIGHT ASSEMBLY 
    1. Remove the map light assembly.

      Refer to REMOVAL [02/2014 - ]

    2. Inspect the map light assembly.

      Refer to INSPECTION [02/2014 - ]

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY). Refer to  REMOVAL [02/2014 - ] 

    Result:  2

    NG 

    REPLACE MAP LIGHT ASSEMBLY. Refer to  REMOVAL [02/2014 - ] 

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