POWER TRUNK LID SYSTEM, Diagnostic DTC:B2251

DTC Code DTC Name
B2251 Back Door Closer Switch Malfunction

DESCRIPTION

DTC B2251 is output when there is a malfunction in the half-latch switch circuit of the luggage door closer assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2251 Back Door Closer Switch Malfunction When luggage door is opening or closing, malfunction occurs in half-latch switch, striker switch circuit of luggage door closer assembly

  • Luggage door closer assembly

  • Harness or connector

  • Luggage closer motor assembly

WIRING DIAGRAM

Refer to the "System Diagram".

Click here

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. READ VALUE USING GTS (HALF-LATCH SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Back Door / Data List.

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


      Body Electrical > Back Door > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Half Latch SW Luggage door closer assembly half-latch switch signal ON or OFF

      ON: Half-latch switch of luggage door closer assembly on (Luggage compartment door open)

      OFF: Half-latch switch of luggage door closer assembly off (Luggage compartment door closed)

      		 When this item is abnormal, there is a problem with the half-latch switch of the luggage door closer assembly or related parts.*

      Tech Tips

      See "Luggage Compartment Door Closer Operation Timing Chart"

      Click here


      Body Electrical > Back Door > Data List
      Tester Display
      Half Latch SW
      OK
      On GTS screen, each item changes between ON and OFF as shown in above chart.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR ASSEMBLY - LUGGAGE DOOR CLOSER ASSEMBLY)


    1. Disconnect the U28 luggage closer motor assembly connector.

    2. Disconnect the X9 luggage door closer assembly connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      U28-7 (HAF) - X9-6 (FSW) Always Below 1 Ω
      U28-7 (HAF) or X9-6 (FSW) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE LUGGAGE DOOR CLOSER ASSEMBLY


    1. Temporarily replace the luggage door closer assembly with a new one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK FOR DTC


    1. Delete the DTCs.

      Click here


      Body Electrical > Back Door > Clear DTCs
      OK
      DTC B2251 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (LUGGAGE DOOR CLOSER ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here