ROOF SUNSHADE SYSTEM, Diagnostic DTC:B234D

DTC Code DTC Name
B234D Position Initialization Incomplete (Rr Shade)

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
B234D Position Initialization Incomplete (Rr Shade) Sliding roof drive gear assembly (rear roof sunshade ECU) has not been initialized.

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

  • Map light sub-assembly (sliding roof switch)

  • Harness or connector

WIRING DIAGRAM

B006E35E01

CAUTION / NOTICE / HINT

Note


  • When the sliding roof drive gear assembly (rear roof sunshade ECU) is removed and reinstalled or replaced, the sliding roof drive gear assembly (rear 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 B234C and B234D are output simultaneously, perform troubleshooting for DTC B234C first.

PROCEDURE


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


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

      Click here

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

    NG

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

    OK

  2. CHECK REAR ROOF SUNSHADE OPERATION


    1. Check the rear roof sunshade auto operation.

      Click here

      OK
      Auto operation operates normally.
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  3. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Sliding Sunshade > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Rear Sliding Sunshade > Trouble Codes
      OK
      DTC B234D is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (MALFUNCTION DUE TO INITIALIZATION FAILURE)

    NG

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

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


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

      Click here


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

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

    NG

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

    OK

  5. READ VALUE USING GTS (Push Operating Switch)


    1. Read the Data List according to the display on the GTS.

      Click here


      Body Electrical > Rear Sliding Sunshade > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Push Operating Switch Map light sub-assembly (rear roof sunshade switch) signal OFF or ON

      OFF: Map light sub-assembly (rear roof sunshade switch) not pressed

      ON: Map light sub-assembly (rear roof sunshade switch) pressed

      		 -

      Body Electrical > Rear Sliding Sunshade > Data List
      Tester Display
      Push Operating 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 (REAR 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 ASSEMBLY [REAR ROOF SUNSHADE ECU] - MAP LIGHT SUB-ASSEMBLY AND BODY GROUND)


    1. Disconnect the N31 sliding roof drive gear assembly (rear roof sunshade ECU) 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
      N31-4 (SW) - N9-11 (OPN) Always Below 1 Ω
      N31-1 (E) - Body ground Always Below 1 Ω
      N7-22 (GND) - Body ground Always Below 1 Ω
      N31-4 (SW) or N9-11 (OPN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR