NAVIGATION SYSTEM(for Radio and Display Type) Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

*a	Quarter Window Assembly (Window Glass Antenna Wire)
*b	Holder Antenna Assembly
*c	No. 2 Antenna Cord Sub-assembly
*d	Radio and Display Receiver Assembly

PROCEDURE

1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. Check the radio automatic station search function by activating it.

      OK
      Automatic station search function stops on a station.

   
   

   OK

   USE SIMULATION METHOD TO CHECK Click here

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2. CHECK OPTIONAL COMPONENTS

   
   

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

      OK
      Optional components are installed.

      Note

      Do not remove optional components without permission of the customer.

   
   

   OK

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

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3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. 

      Remove the antenna connector from the radio and display receiver assembly.

   2. Turn the engine switch on (ACC) with the radio and display receiver assembly connector connected.

   3. Turn on the radio and turn into AM mode.

   4. Place a screwdriver, thin wire or other metal object on the radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK
      Noise occurs.

   
   

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   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   OK

4. INSPECT QUARTER WINDOW ASSEMBLY (WINDOW GLASS ANTENNA WIRE)

   
   

   1. Inspect the quarter window assembly (window glass antenna wire) Click here.

   
   

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   REPAIR QUARTER WINDOW ASSEMBLY Click here

   OK

5. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. Disconnect the RA radio and display receiver assembly connector.

   2. 

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition 5 (ANT+) - Body ground Engine switch on (ACC) Radio switch on 11 to 14 V

   
   

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   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   OK

6. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Radio and Display Receiver Assembly)
      *b	Front view of wire harness connector (to Holder Antenna Assembly)

      Disconnect the antenna connector from the radio and display receiver assembly.

   2. Disconnect the antenna connector from the holder antenna assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition RA-3 (RMAIN2) - 3 Always Below 1 Ω RA-5 (ANT+) - 1 Always Below 1 Ω RA-3 (RMAIN2) - Body ground Always 10 kΩ or higher RA-5 (ANT+) - Body ground Always 10 kΩ or higher

   
   

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   REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

7. CHECK HOLDER ANTENNA ASSEMBLY

   
   

   1. Replace the holder antenna assembly and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

   
   

   OK

   END (HOLDER ANTENNA ASSEMBLY IS DEFECTIVE)

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here