PARKING ASSIST MONITOR SYSTEM 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.

Tech Tips

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

WIRING DIAGRAM

A00973XE01

INSPECTION PROCEDURE

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 ignition switch to ON.

    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.

      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.

    NG

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BACK DOOR COURTESY LIGHT SWITCH) Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

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


    1. Disconnect the G64 main body ECU connector.

    2. Disconnect the R9 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
      G64-19 (BCTY) - R9-1 Always Below 1 Ω
      G64-19 (BCTY) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY


    1. A009BTA

      Remove the back door courtesy light switch assembly.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - Body ground Pin pushed 10 kΩ or higher
      Pin not pushed Below 1 Ω

    NG

    REPLACE BACK DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    OK

    REPLACE MAIN BODY ECU Click here