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NAVIGATION SYSTEM TV Screen is Distorted

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DTC Code DTC Name
  TV Screen is Distorted
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

When replacing the radio receiver assembly or navigation ECU, always replace it with a new one.


  • A communication malfunction DTC may be stored.

  • The radio receiver assembly or navigation ECU may not operate normally.

Tip:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

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PROCEDURE


  1. Click here

    CHECK OPTIONAL COMPONENTS


    1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

      Result
      Result Proceed to
      Optional components are not installed A
      Optional components are installed B
      Note:

      Do not remove optional components without the permission of the customer.


    • AClick here
    • B

      REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

  2. Click here

    CHECK WINDSHIELD GLASS (WINDOW GLASS ANTENNA WIRE)


    1. B004V4KC26
      *1 Tester Probe
      *2 Tin Foil
      *3 Antenna Wire

      Check for continuity in the antenna.

      Tip:

      Check for continuity at the center of each antenna wire as shown in the illustration.

      Note:

      When cleaning the glass, wipe it in the direction of the wire with a soft dry cloth. Take care not to damage the wire. Do not use detergents or glass cleaners with abrasive ingredients. When measuring resistance, wrap a piece of tin foil around the tip of each probe and press the foil against the wire with your finger as shown in the illustration.

      OK
      There is continuity in the antenna wire.
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR WINDSHIELD GLASS (WINDOW GLASS ANTENNA WIRE)

  3. Click here

    CHECK DTV RECEPTION CHECK (OPERATION CHECK)


    1. Enter the "DTV reception check" screen. Refer to Check Digital Television Reception in Operation Check.

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      Tip:

      • As digital TV is a terrestrial broadcast, the digital TV antenna cannot receive the signal in places where the signal may not reach the vehicle, such as mountains or tunnels.

      • Even in areas where digital TV broadcasts for households can be received, the in-vehicle digital TV may not be able to receive the broadcast.

    2. B004UI7

      Check the digital TV tuner reception level.

      Tip:

      • Do not depend solely on the reception level as a reference value as it may vary depending on the signal conditions such as wave interference.

      • If the result changes after turning around the vehicle, it is not a malfunction, but is caused by a local weak electric field.

      OK
      Digital TV tuner reception level check result indicates good reception.
      Result
      Proceed to
      OK
      NG

  4. Click here

    CHECK NO. 3 ANTENNA CORD SUB-ASSEMBLY


    1. B004VPUC01
      *a

      Front view of wire harness connector

      (to Television Antenna Assembly)
      *b

      Front view of wire harness connector

      (to Wire Harness)

      Remove the antenna connector from the television antenna assembly.

    2. Disconnect the antenna connector from the wire harness.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 - B-1 Always Below 1 Ω
      A-1a - B-1a Always Below 1 Ω
      A-1 - Body ground Always 10 kΩ or higher
      A-1a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

  5. Click here

    CHECK HARNESS AND CONNECTOR (NO. 3 ANTENNA CORD SUB-ASSEMBLY - NAVIGATION ECU)


    1. B004VZOC01
      *a

      Front view of wire harness connector

      (to No. 3 Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (to Navigation ECU)

      Disconnect the antenna cord sub-assembly connector.

    2. Disconnect the navigation ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B-1 - DTV-1 (DTV) Always Below 1 Ω
      B-1a - DTV-1a Always Below 1 Ω
      B-1 - Body ground Always 10 kΩ or higher
      B-1a - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    CHECK TELEVISION ANTENNA ASSEMBLY


    1. Replace the television antenna assembly.

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    2. Check if the same problem occurs again.

      OK
      Malfunction does not disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END (TELEVISION ANTENNA ASSEMBLY IS DEFECTIVE)

    • NGClick here
  7. Click here

    CHECK NAVIGATION ECU


    1. Replace the navigation ECU.

      Click here

    2. Check if the same problem occurs again.

      OK
      Malfunction does not disappears.
      Result
      Proceed to
      OK
      NG

    • OK

      END (NAVIGATION ECU IS DEFECTIVE)

    • NG

      REPLACE RADIO RECEIVER ASSEMBLYClick here