ROOF SUNSHADE SYSTEM, Diagnostic DTC:B2348

DTC Code DTC Name
B2348 Position Initialization Incomplete (Fr Shade)

DESCRIPTION

This DTC is stored when the sliding roof drive gear assembly (front roof sunshade ECU) has not been initialized.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2348 Position Initialization Incomplete (Fr Shade) Sliding roof drive gear assembly (front roof sunshade ECU) has not been initialized.

  • Sliding roof drive gear assembly (front roof sunshade ECU)

  • Map light sub-assembly (sliding roof switch)

  • Harness or connector

WIRING DIAGRAM

B006EWOE01

CAUTION / NOTICE / HINT

Note


  • When the sliding roof drive gear assembly (front roof sunshade ECU) is removed and reinstalled or replaced, the sliding roof drive gear assembly (front roof sunshade ECU) 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

Tech Tips

When DTC B2342 and B2348 are output simultaneously, perform troubleshooting for DTC B2342 first.

PROCEDURE


  1. INITIALIZE SLIDING ROOF DRIVE GEAR ASSEMBLY (FRONT ROOF SUNSHADE ECU)


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

      Click here

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

    NG

    PERFORM ACTIVE TEST USING GTS (Front Sliding Sunshade) Click here

    OK

  2. CHECK FRONT ROOF SUNSHADE OPERATION


    1. Check the front roof sunshade operation.

      Click here

      OK
      Auto operation operates normally.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. 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 B2348 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE)

    NG

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

  4. PERFORM ACTIVE TEST USING GTS (Front Sliding Sunshade)


    1. Perform the Active Test according to the display on the GTS.

      Click here


      Body Electrical > Sliding Roof > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Front Sliding Sunshade Operate slide motor OFF / Open / Close -

      Body Electrical > Sliding Roof > Active Test
      Tester Display
      Front Sliding Sunshade
      OK
      Front roof sunshade is operated using the GTS.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  5. READ VALUE USING GTS (Shade Close Switch, Shade Open Switch)


    1. Using the GTS, read the Data List.

      Click here


      Body Electrical > Sliding Roof > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shade Close Switch Front sunshade close switch signal ON or OFF

      OFF: Front roof sunshade switch (close) not pressed

      ON: Front roof sunshade switch (close) pressed

      		 -
      Shade Open Switch Front roof sunshade open switch signal ON or OFF

      OFF: Front roof sunshade switch (open) not pressed

      ON: Front roof sunshade switch (open) pressed

      		 -

      Body Electrical > Sliding Roof > Data List
      Tester Display
      Shade Close Switch
      Shade Open Switch
      OK
      The GTS display changes according to switch operation as shown in the table.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  6. INSPECT MAP LIGHT SUB-ASSEMBLY


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

      Click here

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT SUB-ASSEMBLY Click here

    OK

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


    1. Disconnect the N4 sliding roof drive gear sub-assembly connector.

    2. Disconnect the N7 and N9 map light sub-assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N4-9 (DWN) - N9-16 (DOWN) Always Below 1 Ω
      N4-5 (UP) - N9-15 (UP) Always Below 1 Ω
      N4-2 (E) - Body ground Always Below 1 Ω
      N7-22 (GND) - Body ground Always Below 1 Ω
      N4-9 (DWN) or N9-16 (DOWN) - Body ground Always 10 kΩ or higher
      N4-5 (UP) or N9-15 (UP) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR