INTELLIGENT PARKING ASSIST SYSTEM Message indicating Back Door is Open is Displayed even after Back Door is Closed

DESCRIPTION

The parking assist ECU receives back door lock assembly open/close signals from the main body ECU (multiplex network body ECU) via CAN communication. When the back door is open, the camera aiming cannot be adjusted correctly because the rear television camera assembly is installed on the back door. Therefore, when adjusting the camera aiming calibration while the back door is open, a back door open warning message will be displayed on the screen and camera aiming adjustment will be canceled.

WIRING DIAGRAM

A005C40E02

CAUTION / NOTICE / HINT

Note


  • When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, correct the steering angle neutral point Click here.

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the advanced parking guidance system may be needed Click here.

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body / Main Body / Data List.

    5. Check for proper functioning of the following item using the Data List.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Back Door Courtesy SW Back door courtesy switch signal/ON or OFF

      ON: Back door open

      OFF: Back door closed

      		 -
      OK
      The back door courtesy switch functions as specified in the normal condition column.

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - BACK DOOR LOCK ASSEMBLY)


    1. Disconnect the L7 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the V11 back door lock assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L7-19 (BCTY) - V11-3 (D+) Always Below 1 Ω
      L7-19 (BCTY) - Body ground Always 10 kΩ or higher
      V11-1 (ACT-) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT BACK DOOR LOCK ASSEMBLY


    1. Remove the back door lock assembly Click here.

    2. Check the operation of the door lock motor.

      A005CLPE01

      1. Move the door lock to the lock position.

      2. Apply auxiliary battery voltage to the door lock motor and check the operation of the door lock motor.

        OK
        Connection Result

        Auxiliary battery positive (+) → 2 (ACT+)

        Auxiliary battery negative (-) → 1 (ACT-)

        		 Unlocks

    3. Check the operation of the door courtesy switch.


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

        Standard Resistance
        Measurement Condition Condition Specified Condition
        1 (ACT-) - 3 (D+) Locked 10 kΩ or higher
        1 (ACT-) - 3 (D+) Unlocked Below 1 Ω
        Text in Illustration
        *a

        Component without harness connected

        (Back Door Lock Assembly)
        *b Lock
        *c Unlock

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here