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

WIRING DIAGRAM

B001ABJE08

CAUTION / NOTICE / HINT

Note

Check that the antenna cable is properly installed and does not have any sharp bends, pinching or loose connections.

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 optional components without permission of the customer.

      OK
      Optional components are installed.

    NG

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

    OK

  3. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. B0019AI

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

    2. Turn the engine 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 QUARTER WINDOW ASSEMBLY (WINDOW GLASS ANTENNA WIRE)


    1. Inspect the quarter 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. B001A0AE01
      Text in Illustration
      *a

      Component without harness connected

      (Multi-media Module Receiver Assembly)

      Disconnect the multi-media module receiver assembly connector.

    2. 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 Engine switch on (ACC), radio switch on and FM or AM selected 11 to 14 V

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  6. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. B001B1DE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Multi-media Module Receiver Assembly)
      *b

      Front view of wire harness connector

      (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) - 4 Always Below 1 Ω
      RA-1 (SUB) - 3 Always Below 1 Ω
      RA-5 (ANT+) - 2 Always Below 1 Ω
      RA-3 (MAIN) or 4 - Body ground Always 10 kΩ or higher
      RA-1 (SUB) or 3 - Body ground Always 10 kΩ or higher
      RA-5 (ANT+) or 2 - 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. B0019HAE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)
      *b

      Front view of wire harness connector

      (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
      4 - 4 Always Below 1 Ω
      3 - 3 Always Below 1 Ω
      2 - 2 Always Below 1 Ω
      4 or 4 - Body ground Always 10 kΩ or higher
      3 or 3 - Body ground Always 10 kΩ or higher
      2 or 2 - Body ground Always 10 kΩ or higher

    NG

    REPLACE 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