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

DTC Code DTC Name
Message indicating Back Door is Open is Displayed even after Back Door is Closed

DESCRIPTION

The parking assist ECU receives back door courtesy light switch assembly open/close signals from the main 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.

Tip:

The back door courtesy light switch assembly is connected to the main body ECU by the vehicle wire harness.

WIRING DIAGRAM

E198737E04

CAUTION / NOTICE / HINT

Note:

  • When "System initializing" is displayed on the display and navigation module display after the battery terminal 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 parking assist monitor system may be needed (Click here).

PROCEDURE

  1. READ VALUE USING INTELLIGENT TESTER (BACK DOOR COURTESY SWITCH)

    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

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

      Body Electrical > Main Body > Data List

      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.

      Result

      Result

      OK

      NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR COURTESY LIGHT SWITCH)

    1. Disconnect the G47 main body ECU connector.

    2. Disconnect the R11 back door courtesy light switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G47-19 (BCTY) - R11-1

      Always

      Below 1 Ω

      G47-19 (BCTY) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY

    1. E139234

      Remove the back door courtesy light switch assembly.

      Click here

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      1 - Switch body

      Pin pushed

      10 kΩ or higher

      Pin not pushed

      Below 1 Ω

      Result

      Result

      OK

      NG
    OK

    REPLACE MAIN BODY ECU

    Click hereClick here

    NG

    REPLACE BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY

    Click here