NAVIGATION SYSTEM Radio Broadcast cannot be Received or Poor Reception

INSPECTION PROCEDURE

PROCEDURE

1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. Check the radio automatic station search function.

      
      

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

         OK
         The radio automatic station search function works properly.

   
   

   NG

   CHECK OPTIONAL COMPONENTS Click here

   OK

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

2. CHECK OPTIONAL COMPONENTS

   
   

   1. Check if any optional components, such as a telephone antenna, are installed.

      Result

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

      Note

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

   
   

   B

   CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   A

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. 

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

   2. With the radio and display receiver assembly connector connected, turn the ignition switch to ACC.

   3. Turn on the radio and select the AM mode.

   4. Place the tip of a screwdriver against the metal terminal of the radio and display receiver assembly and check that noise is heard from the speaker.

      OK
      Noise occurs.

   
   

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   OK

4. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   

   1. Disconnect the radio and display receiver assembly connector.

   2. 

      Text in Illustration

      *a	Component without harness connected (Radio and Display Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition RA-5 (ANT+) - Body ground Ignition switch ACC, radio switch on and FM or AM selected 11 to 14 V

   
   

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   OK

5. CHECK AMPLIFIER ANTENNA ASSEMBLY

   
   

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

      OK
      Radio broadcasts can be received normally.

   
   

   NG

   REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

   OK

   END (AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

6. REPLACE ANTENNA CORD SUB-ASSEMBLY

   
   

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

      OK
      Radio broadcasts can be received normally.

   
   

   NG

   REPLACE EXTENSION MODULE Click here

   OK

   END (ANTENNA CORD SUB-ASSEMBLY IS DEFECTIVE)