AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Radio Broadcast cannot be Received (Bad Reception)

PROCEDURE

1. CHECK RADIO RECEIVER ASSEMBLY

   
   

   1. Check if the radio auto-search functions properly.

      
      

      1. Tune the radio using the auto-search function and check that it operates normally.

         OK
         The radio auto-search functions properly.

   
   

   OK

   END

   NG

2. CHECK OPTIONAL COMPONENTS

   
   

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

      Result
      Result Proceed to Optional component(s) installed. A Optional component(s) not installed. B

   
   

   A

   EFFECT FROM OPTIONAL COMPONENTS

   B

3. CHECK ANTENNA FOR NOISE PRODUCTION

   
   

   1. With the ignition switch ACC, turn on the radio and select the AM mode.

   2. Remove the roof antenna pole sub-assembly.

   3. Place the tip of a screwdriver on the antenna and check that noise is heard from speakers.

      OK
      Noise occurs.

   4. Install the roof antenna pole sub-assembly.

   
   

   OK

   REPLACE RADIO RECEIVER ASSEMBLY Click here

   NG

4. CHECK INSTALLATION OF ANTENNA GROUND

   
   

   1. Check that the amplifier antenna ground is securely fastened to the body.

      OK
      Ground is securely fastened to body.

   2. Check that the antenna cord sub-assembly ground is securely fastened to the body.

      OK
      Ground is securely fastened to body.

   
   

   NG

   CORRECTLY INSTALL GROUND

   OK

5. CHECK AMPLIFIER ANTENNA ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to Amplifier Antenna Assembly)

      Disconnect the amplifier antenna connectors.

   2. With the ignition switch ACC, turn on the radio and select the AM mode.

   3. Place the tip of a screwdriver against the metal terminal of the No. 2 antenna cord sub-assembly and check that noise is heard from speakers.

      OK
      Noise occurs.

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

      Standard Voltage
      Tester Connection Condition Specified Condition 3 - Body ground During radio (AM) reception 11 to 14 V

   5. Reconnect the amplifier antenna connectors.

   
   

   OK

   REPLACE AMPLIFIER ANTENNA ASSEMBLY Click here

   NG

6. CHECK No. 2 ANTENNA CORD SUB-ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Front view of wire harness connector (to No. 2 Antenna Cord Sub-Assembly)

      Disconnect the antenna cord sub-assembly connectors.

   2. With the ignition switch ACC, turn on the radio and select the AM mode.

   3. Place the tip of a screwdriver against the metal terminal of the antenna cord sub-assembly and check that noise is heard from speakers.

      OK
      Noise occurs.

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

      Standard Voltage
      Tester Connection Condition Specified Condition 3 - Body ground During radio (AM) reception 11 to 14 V

   5. Reconnect the antenna cord sub-assembly connectors.

   
   

   OK

   REPLACE No. 2 ANTENNA CORD SUB-ASSEMBLY Click here

   NG

7. CHECK RADIO RECEIVER ASSEMBLY

   
   

   1. 

      Disconnect the antenna connector from the radio receiver assembly.

   2. With the radio receiver assembly connectors 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 receiver assembly and check that noise is heard from speakers.

      OK
      Noise occurs.

   5. 

      Reconnect the antenna connector to the radio receiver assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition 5 - Body ground During radio (AM) reception 11 to 14 V

      Text in Illustration

      *a	Component with harness connected (Radio Receiver Assembly)

   
   

   OK

   REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

   NG

   REPLACE RADIO RECEIVER ASSEMBLY Click here