TAIL GATE CLOSER SYSTEM, Diagnostic DTC:B225B

DTC Code DTC Name
B225B Tail Gate Panel Half Switch or Courtesy Switch RH

DESCRIPTION

The No. 2 main body ECU receives the half-latch switch, pawl switch and lower tail gate courtesy switch signals from the lower tail gate lock assembly RH and detects the open/closed status of the lower tail gate. DTC B225B is stored when the No. 2 main body ECU receives a half-latch switch, pawl switch or lower tail gate courtesy switch malfunction signal from the lower tail gate lock assembly RH.

DTC Code DTC Detection Condition Trouble Area
B225B A half-latch switch, pawl switch or lower tail gate courtesy switch malfunction (open or short circuit) signal from the lower tail gate lock RH is received.

  • Lower tail gate lock assembly RH

  • Harness or connector

  • No. 2 main body ECU

WIRING DIAGRAM

B001AEAE04

PROCEDURE


  1. READ VALUE USING GTS


    1. Check the Data List for proper functioning of the half-latch switch, pawl switch and lower tail gate courtesy switch Click here.

      Body No. 4
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Half Latch Switch RH Half-latch switch signal / ON or OFF

      ON: Lower tail gate open

      OFF: Lower tail gate closed

      		 -
      Courtesy Switch RH Lower tail gate courtesy switch RH signal / ON or OFF

      ON: Lower tail gate open

      OFF: Lower tail gate closed

      		 -
      Luggage Pawl Switch Pawl switch signal / ON or OFF

      ON: Lower tail gate lock motor operating

      OFF: Lower tail gate open or closed

      		 -
      OK
      The display is as specified in the normal condition.

    NG

    INSPECT LOWER TAIL GATE LOCK ASSEMBLY RH Click here

    OK

  2. CHECK DTC OUTPUT


    1. Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

    2. Check for DTCs Click here.

    3. Clear the DTCs Click here.

    4. Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

    5. Recheck for DTCs Click here.

      OK
      DTC B225B is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE NO. 2 MAIN BODY ECU Click here

  3. INSPECT LOWER TAIL GATE LOCK ASSEMBLY RH


    1. Remove the lower tail gate lock assembly RH Click here.

    2. Inspect the lower tail gate lock assembly RH Click here.


    NG

    REPLACE LOWER TAIL GATE LOCK ASSEMBLY RH Click here

    OK

  4. READ VALUE USING GTS


    1. Check the Data List for proper function of the lower tail gate courtesy switch Click here.

      Back Door
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RH CTSY SW of Tail Gate Panel Lower tail gate courtesy switch RH signal / ON or OFF

      ON: Tail gate closed

      OFF: Tail gate open

      		 -
      OK
      The display is as specified in the normal condition.

    NG

    REPLACE POWER BACK DOOR UNIT ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (LOWER TAIL GATE LOCK ASSEMBLY RH - NO. 2 MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the f2 lower tail gate lock assembly RH connector.

    2. Disconnect the L33 No. 2 main body ECU connector.

    3. Disconnect the L36 power back door unit assembly (power back door ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      f2-1 (HAF) - L33-8 (HAF) Always Below 1 Ω
      f2-2 (FUL) - L33-22 (FUL) Always Below 1 Ω
      f2-4 (POL) - L33-16 (POL) Always Below 1 Ω
      f2-3 (E1) - Body ground Always Below 1 Ω
      f2-1 (HAF) - Body ground Always 10 kΩ or higher
      f2-2 (FUL) - Body ground Always 10 kΩ or higher
      f2-4 (POL) - Body ground Always 10 kΩ or higher

    OK

    REPLACE NO. 2 MAIN BODY ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR