NAVIGATION SYSTEM TV Screen is Distorted

CAUTION / NOTICE / HINT

PROCEDURE

1. 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.

   
   

   B

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

   A

2. CHECK WINDOW GLASS ANTENNA WIRE

   
   
   1. 

      Text in Illustration

      *a	Tester Probe
      *b	Antenna Wire
      *c	Tin Foil

      Check for continuity in the window glass antenna wire.

      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.

      Tech Tips

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

      OK
      There is continuity in the window glass antenna wire.

   
   

   NG

   REPAIR WINDOW GLASS ANTENNA WIRE Click here

   OK

3. CHECK DTV RECEPTION (OPERATION CHECK)

   
   

   1. Enter the "DTV reception check" screen. Refer to Check DTV Reception in Operation Check Click here.

      Tech Tips

      
      

      • 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. 

      Check the digital TV tuner reception level.

      Tech Tips

      
      

      • 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 the vehicle around, 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.

   
   

   OK

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   NG

4. REPLACE HARNESS AND CONNECTOR (NO. 2 ANTENNA CORD SUB-ASSEMBLY - RADIO RECEIVER ASSEMBLY)

   
   

   1. Replace the harness and connector with a new or known good one and check if digital television broadcasts can be received normally.

      OK
      Digital television broadcasts can be received normally.

   
   

   OK

   END

   NG

5. REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   

   1. Replace the No. 2 antenna cord sub-assembly with a new or known good one and check if digital television broadcasts can be received normally Click here.

      OK
      Digital television broadcasts can be received normally.

   
   

   OK

   END

   NG

6. REPLACE TELEVISION ANTENNA ASSEMBLY

   
   

   1. Replace the television antenna assembly with a new or known good one and check if digital television broadcasts can be received normally Click here.

      OK
      Digital television broadcasts can be received normally.

   
   

   OK

   END

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here