PARKING ASSIST MONITOR SYSTEM Guide Lines and Buttons are not Displayed for All Display Modes

DESCRIPTION

The navigation ECU sub-assembly receives back door 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 television camera assembly is installed on the back door. Therefore, when performing back camera position setting while the back door is open, a back door open warning message will be displayed on the screen and back camera position setting will be canceled.

Tech Tips

Check the parking assist monitor screen display mode settings. (Check if the parking guide lines are set to off.)

WIRING DIAGRAM

A00YS3TE04

CAUTION / NOTICE / HINT

Note


  • When "System initializing" is displayed on the navigation ECU sub-assembly after disconnecting the cable from the negative (-) battery terminal, 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 GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

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

    5. Read the Data List according to the display on the GTS.


      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.

      Body Electrical > Main Body > Data List
      Tester Display
      Back Door Courtesy SW
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT BACK DOOR LOCK ASSEMBLY


    1. Remove the back door lock assembly.

      Click here

    2. Inspect the back door lock assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BACK DOOR LOCK ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND BODY GROUND)


    1. Disconnect the U13*1 or U12*2 back door lock assembly connector.


      • *1: w/ Power Back Door System

      • *2: w/o Power Back Door System

    2. Remove the main body ECU (multiplex network body ECU).


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

      Standard Resistance
      w/ Power Back Door System
      Tester Connection Condition Specified Condition
      U13-3 (CTY) - A-20 (BCTY) Always Below 1 Ω
      U13-3 (CTY) - Body ground Always 10 kΩ or higher
      U13-4 (E) - Body ground Always Below 1 Ω
      w/o Power Back Door System
      Tester Connection Condition Specified Condition
      U12-3 (D+) - A-20 (BCTY) Always Below 1 Ω
      U12-3 (D+) - Body ground Always 10 kΩ or higher
      U12-1 (ACT-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK (for LHD)
      OK (for RHD)
      NG

    OK (for LHD)

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

    OK (for RHD)

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

    NG

  4. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the U13*1 or U12*2 back door lock assembly connector.


      • *1: w/ Power Back Door System

      • *2: w/o Power Back Door System

    2. Disconnect the 3E instrument panel junction block assembly connector.

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

      Standard Resistance
      w/ Power Back Door System
      Tester Connection Condition Specified Condition
      U13-3 (CTY) - 3E-33 Always Below 1 Ω
      U13-3 (CTY) - Body ground Always 10 kΩ or higher
      U13-4 (E) - Body ground Always Below 1 Ω
      w/o Power Back Door System
      Tester Connection Condition Specified Condition
      U12-3 (D+) - 3E-33 Always Below 1 Ω
      U12-3 (D+) - Body ground Always 10 kΩ or higher
      U12-1 (ACT-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK (for LHD)
      OK (for RHD)
      NG

    OK (for LHD)

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK (for RHD)

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR