AUDIO AND VISUAL SYSTEM (w/o Navigation System) Radio Broadcast cannot be Received or Poor Reception

INSPECTION PROCEDURE

PROCEDURE

1. CHECK RADIO 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 stops on a station A Automatic station search function does not stop B

   
   

   B

   CHECK OPTIONAL COMPONENTS Click here

   A

   REPLACE RADIO RECEIVER ASSEMBLY Click here

2. CHECK OPTIONAL COMPONENTS

   
   

   1. Check optional components (sunshade film, telephone antenna, etc.).

      
      

      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 installed A Optional components are not installed B

         Note

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

   
   

   B

   CHECK RADIO ANTENNA Click here

   A

   REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

3. CHECK RADIO ANTENNA

   
   

   1. Preparation for check

      
      

      1. Remove the roof antenna pole sub-assembly from the roof antenna assembly.

   2. Check for noise

      
      

      1. Turn the power switch on (ACC) with the radio 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 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 RADIO RECEIVER ASSEMBLY Click here

   A

4. CHECK RADIO RECEIVER ASSEMBLY

   
   

   1. 

      Preparation for check

      
      

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

   2. Check for noise

      
      

      1. Turn the power switch on (ACC) with the radio 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 radio receiver assembly antenna jack and check that noise can be heard from the speakers.

         OK
         Noise can be heard from the speakers.

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

5. CHECK WINDOW GLASS ANTENNA WIRE

   
   

   1. 

      Check for continuity of the antenna.

      Tech Tips

      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.

   
   

   NG

   REPAIR WINDOW GLASS ANTENNA WIRE Click here

   OK

6. INSPECT RADIO RECEIVER ASSEMBLY

   
   

   1. Disconnect the radio receiver assembly connector.

   2. 

      Text in Illustration

      *a	Component without harness connected (Radio Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition RA1-5 (ANT+) - Body ground Power switch on (ACC) Radio switch on 11 to 14 V

   
   

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   OK

7. CHECK RADIO ANTENNA CORD

   
   

   1. Remove the antenna connector of the radio receiver assembly and antenna.

   2. Measure the resistance between the antenna and radio receiver assembly to check for an open circuit in the antenna cord.

      Standard Resistance
      Below 1 Ω

   3. Measure the resistance between the antenna cord and body ground to check for a short circuit in the antenna cord.

      Standard Resistance
      10 kΩ or higher

   
   

   NG

   REPLACE RADIO ANTENNA CORD Click here

   OK

8. 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

   OK

9. REPLACE ROOF ANTENNA ASSEMBLY

   
   

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

      OK
      Radio broadcasts can be received.

   
   

   NG

   REPLACE AMPLIFIER ANTENNA ASSEMBLY Click here

   OK

   NORMAL OPERATION

10. REPLACE 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.

    
    

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

    NORMAL OPERATION