NAVIGATION SYSTEM (for Navigation Receiver Type) Radio Broadcast cannot be Received or Poor Reception

INSPECTION PROCEDURE

PROCEDURE

1. CHECK NAVIGATION RECEIVER ASSEMBLY

   
   

   1. Check the radio automatic station search function.

      
      

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

         Result
         Result Proceed to Automatic station search function does not stop A Automatic station search function stops on a station B

   
   

   B

   REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

   A

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.

      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

3. CHECK RADIO ANTENNA

   
   

   1. Preparation for check

      
      

      1. Remove the roof antenna pole sub-assembly from the amplifier antenna assembly (for Roof).

   2. Check for noise

      
      

      1. Turn the ignition switch to ACC with the radio and display receiver assembly connector connected.

      2. Turn the radio on and tune into AM mode.

      3. Place a screwdriver, thin wire or other metal object on the amplifier antenna assembly (for Roof) threaded installation portion for the roof antenna pole sub-assembly and check that noise can be heard from the speakers.

         Result
         Result Proceed to Noise does not occur A Noise occurs B

   
   

   B

   REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

   A

4. CHECK NAVIGATION RECEIVER ASSEMBLY

   
   

   1. 

      Preparation for check

      
      

      1. Remove the antenna connector from the navigation receiver assembly.

   2. Check for noise

      
      

      1. Turn the ignition switch to ACC with the navigation receiver assembly connector connected.

      2. Turn the radio on and tune into AM mode.

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

         OK
         Noise can be heard from the speakers.

   
   

   NG

   REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

   OK

5. INSPECT NAVIGATION RECEIVER ASSEMBLY

   
   

   1. Disconnect the RA navigation receiver assembly connector.

   2. 

      Text in Illustration

      *a	Component without harness connected (Navigation 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 AM or FM selected 11 to 14 V

   
   

   NG

   REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

   OK

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 NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

   NORMAL OPERATION

7. REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

   
   

   1. Replace the No. 2 antenna cord sub-assembly and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received normally.

   
   

   NG

   REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY Click here

   OK

   NORMAL OPERATION

8. REPLACE NO. 3 ANTENNA CORD SUB-ASSEMBLY

   
   

   1. Replace the No. 3 antenna cord sub-assembly and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received normally.

   
   

   NG

   CHECK ROOF ANTENNA POLE SUB-ASSEMBLY Click here

   OK

   NORMAL OPERATION

9. CHECK ROOF ANTENNA POLE SUB-ASSEMBLY

   
   

   1. Check that the roof antenna pole sub-assembly is securely installed Click here.

      OK
      The roof antenna pole sub-assembly is installed properly.

   
   

   NG

   CHECK AND REPLACE ROOF ANTENNA POLE SUB-ASSEMBLY Click here

   OK

10. REPLACE AMPLIFIER ANTENNA ASSEMBLY (for Roof)

    
    

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

       OK
       Radio broadcasts can be received normally.

    
    

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

    NORMAL OPERATION