AUDIO AND VISUAL SYSTEM Radio Broadcast cannot be Received or Poor Reception

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

    B

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    A

  2. CHECK OPTIONAL COMPONENTS


    1. Check if the telephone antenna or other optional components 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 RECEIVER ASSEMBLY


    1. A004KDA

      Preparation for check


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

    2. Check for noise


      1. Turn the ignition switch 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

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    OK

  4. INSPECT RADIO RECEIVER ASSEMBLY


    1. Disconnect the radio receiver assembly connector.

    2. A004JI4E02
      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
      RA-5 (ANT+) - Body ground

      Ignition switch ACC

      Radio switch on and FM or AM selected

      		 11 to 14 V

    NG

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    OK

  5. 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.

    OK

    NORMAL OPERATION

    NG

  6. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY


    1. Disconnect the No. 2 antenna cord sub-assembly.

    2. Measure the resistance the No. 2 antenna cord sub-assembly to check for an open circuit in the No. 2 antenna cord sub-assembly.

      Standard Resistance
      Below 1 Ω

    3. Measure the resistance between the No. 2 antenna cord sub-assembly and body ground to check for a short circuit in the No. 2 antenna cord sub-assembly.

      Standard Resistance
      10 kΩ or higher

    NG

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    OK

  7. REPLACE AMPLIFIER ANTENNA ASSEMBLY


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

      OK
      Radio broadcasts can be received normally.

    OK

    NORMAL OPERATION

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here