LUGGAGE COMPARTMENT DOOR CLOSER SYSTEM, Diagnostic DTC:B2251

DTC Code DTC Name
B2251 Back Door Closer Switch Malfunction

DESCRIPTION

"Back door" refers to the luggage compartment door.

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

DTC Code DTC Detection Condition Trouble Area
B2251 When luggage door is opening or closing, malfunction occurs in half-latch switch of luggage compartment door lock assembly

  • Luggage compartment door lock assembly

  • Harness or connector

  • Luggage closer motor assembly

WIRING DIAGRAM

Refer to the "System Diagram" Click here.

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here


    NEXT

  2. CHECK DTC


    1. Check for DTCs Click here

      OK
      DTC B2251 is not output.

    NG

    READ VALUE USING GTS (HALF LATCH SW) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. READ VALUE USING GTS (HALF LATCH SW)


    1. Check the Data List for proper functioning of the luggage closer motor assembly Click here.

      Back Door
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Half Latch SW Luggage compartment door lock assembly half-latch switch signal / ON or OFF

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

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

      • See "Luggage Compartment Door Closer Operation Timing Chart" Click here.

      • When this item is abnormal, there is a problem with the half-latch switch of the luggage compartment door lock assembly or related parts.
      OK
      On the screen, each item changes between ON and OFF as shown in above chart.

    NG

    CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR - LUGGAGE COMPARTMENT DOOR LOCK) Click here

    OK

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

  4. CHECK HARNESS AND CONNECTOR (LUGGAGE CLOSER MOTOR - LUGGAGE COMPARTMENT DOOR LOCK)


    1. Disconnect the U33 luggage closer motor connector.

    2. Disconnect the a9 luggage compartment door lock connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U33-7 (HAF) - a9-6 (FSW) Always Below 1 Ω
      U33-21 (SWG) - a9-7 (E) Always Below 1 Ω
      U33-7 (HAF) - Body ground Always 10 kΩ or higher
      U33-21 (SWG) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY


    1. Temporarily replace the luggage closer motor with a new or normally functioning one Click here.


    NEXT

  6. CHECK FOR DTC


    1. Delete the DTCs Click here.

    2. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC B2250 is output B

    B

    REPLACE LUGGAGE CLOSER MOTOR ASSEMBLY Click here

    A

    END (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY WAS DEFECTIVE)