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

WIRING DIAGRAM

A000U5JE10

PROCEDURE


  1. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. Check the radio automatic station search function.


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

        OK
        Automatic station search function stops on a station.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  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.

      Note

      Do not remove any optional components installed by the customer without his or her consent.

      OK
      Optional components are installed.

    NG

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

    OK

  3. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A000W19

      Remove the antenna connector from the multi-media module receiver assembly.

    2. Turn the power switch on (ACC) with the multi-media module receiver assembly connector connected.

    3. Turn on the radio and turn into AM mode.

    4. Place a screwdriver, thin wire or other metal object on the multi-media module receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK
      Noise can be heard from the speaker.

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  4. CHECK WINDOW GLASS ANTENNA WIRE


    1. Inspect the back window glass (window glass antenna wire) Click here.


    NG

    REPAIR WINDOW GLASS ANTENNA WIRE Click here

    OK

  5. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. Disconnect the multi-media module receiver assembly connector.

    2. A000V99E01
      Text in Illustration
      *a

      Component without harness connected

      (Multi-media Module Receiver Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      RA-5 (ANT+) - Body ground

      Power switch on (ACC)

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  6. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A000YF6E04
      Text in Illustration
      *a

      Antenna Cord Sub-assembly

      (to Multi-media Module Receiver Assembly)
      *b

      Antenna Cord Sub-assembly

      (to No. 2 Antenna Cord Sub-assembly)

      Remove the antenna connector from the multi-media module receiver assembly.

    2. Remove the antenna connector from the No. 2 antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      RA-3 (MAIN) - 3 Always Below 1 Ω
      RA-1 (SUB) - 1 Always Below 1 Ω
      RA-5 (ANT+) - 4 Always Below 1 Ω
      RA-3 (MAIN) or 3 - Body ground Always 10 kΩ or higher
      RA-1 (SUB) or 1 - Body ground Always 10 kΩ or higher
      RA-5 (ANT+) or 4 - Body ground Always 10 kΩ or higher

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  7. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY


    1. A000YMNE01
      Text in Illustration
      *a

      Antenna Cord Sub-assembly

      (to Antenna Cord Sub-assembly)
      *b

      Antenna Cord Sub-assembly

      (to No. 1 Amplifier Antenna Assembly)

      Remove the antenna connector from the antenna cord sub-assembly.

    2. Remove the antenna connector from the No. 1 amplifier antenna assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 3 Always Below 1 Ω
      1 - 1 Always Below 1 Ω
      4 - 4 Always Below 1 Ω
      3 or 3 - Body ground Always 10 kΩ or higher
      1 or 1 - Body ground Always 10 kΩ or higher
      4 or 4 - Body ground Always 10 kΩ or higher

    NG

    NORMAL NO. 2 ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  8. CHECK NO. 1 AMPLIFIER ANTENNA ASSEMBLY


    1. Replace the No. 1 amplifier antenna assembly new or known good one and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

    OK

    END (NO. 1 AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here