NAVIGATION SYSTEM Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

A004SFPE08
A004SFPE09
A004R34E04
A004STKE04

CAUTION / NOTICE / HINT

Note

Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections Click here.

PROCEDURE


  1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    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.

      OK
      Optional components are installed.

      Note

      Do not remove optional components without permission of the customer.


    OK

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

    NG

  3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A004SEV

      Remove the antenna connector from the radio and display receiver assembly.

    2. Turn the ignition switch to ACC with the radio and display 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 radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.

      OK
      Noise occurs.

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  4. CONFIRM MODEL

    Result
    Result Proceed to
    for Sedan, w/ DAB Function A
    for Sedan, w/o DAB Function B
    for Wagon, w/ DAB Function C
    for Wagon, w/o DAB Function D

    B

    CHECK BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE) Click here

    C

    CHECK ROOF ANTENNA POLE SUB-ASSEMBLY Click here

    D

    CHECK ROOF ANTENNA POLE SUB-ASSEMBLY Click here

    A

  5. CHECK BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE)


    1. A004NUYE27
      Text in Illustration
      *a Tester Probe
      *b Antenna Wire
      *c Tin Foil

      Check for continuity in the window glass antenna wire.

      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 window glass antenna wire.

    NG

    REPAIR BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE) Click here

    OK

  6. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Disconnect the RA radio and display receiver assembly connector.

    2. A004MKOE07

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

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

      Ignition switch ACC

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  7. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A004QWKE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly)
      *b

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the antenna connector from the amplifier antenna assembly.

    2. Disconnect the antenna connector from the radio and display receiver assembly.

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

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

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  8. CHECK 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.

    OK

    END (AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  9. CHECK BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE)


    1. A004NUYE27
      Text in Illustration
      *a Tester Probe
      *b Antenna Wire
      *c Tin Foil

      Check for continuity in the window glass antenna wire.

      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 window glass antenna wire.

    NG

    REPAIR BACK WINDOW GLASS (WINDOW GLASS ANTENNA WIRE) Click here

    OK

  10. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Disconnect the RA radio and display receiver assembly connector.

    2. A004MKOE07

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

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

      Ignition switch ACC

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  11. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A004UCBE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly)
      *b

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the antenna connector from the amplifier antenna assembly.

    2. Disconnect the antenna connector from the radio and display receiver assembly.

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

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

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  12. CHECK 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.

    OK

    END (AMPLIFIER ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  13. CHECK ROOF ANTENNA POLE SUB-ASSEMBLY


    1. Check that the roof antenna pole sub-assembly is securely installed.


    NG

    CHECK AND REPLACE ROOF ANTENNA POLE SUB-ASSEMBLY

    OK

  14. CHECK QUARTER WINDOW ASSEMBLY RH (WINDOW GLASS ANTENNA WIRE)


    1. A004NUYE27
      Text in Illustration
      *a Tester Probe
      *b Antenna Wire
      *c Tin Foil

      Check for continuity in the window glass antenna wire.

      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 window glass antenna wire.

    NG

    REPAIR QUARTER WINDOW ASSEMBLY RH (WINDOW GLASS ANTENNA WIRE) Click here

    OK

  15. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Disconnect the RA radio and display receiver assembly connector.

    2. A004MKOE07

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

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

      Ignition switch ACC

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  16. CHECK AMPLIFIER ANTENNA ASSEMBLY (for Glass Side)


    1. A004RX2E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Digital Audio Broadcasting Antenna Assembly )
      *b

      Front view of wire harness connector

      (to Antenna Cord Sub-assembly)

      Disconnect the antenna connector from the digital audio broadcasting antenna assembly.

    2. Disconnect the antenna connector from the antenna cord sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 - 5 Always Below 1 Ω
      3 - 4 Always Below 1 Ω
      2 - Body ground Always 10 kΩ or higher
      3 - Body ground Always 10 kΩ or higher

    NG

    REPLACE AMPLIFIER ANTENNA ASSEMBLY (for Glass Side) Click here

    OK

  17. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A004QWKE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly [for Glass Side])
      *b

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the antenna connector from the amplifier antenna assembly (for Glass Side).

    2. Disconnect the antenna connector from the radio and display receiver assembly.

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

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

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  18. CHECK DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY


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

      OK
      Radio broadcasts can be received.

    OK

    END (DIGITAL AUDIO BROADCASTING ANTENNA ASSEMBLY IS DEFECTIVE)

    NG

  19. CHECK AMPLIFIER ANTENNA ASSEMBLY (for Glass Side)


    1. Replace the amplifier antenna assembly (for Glass Side) and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

    OK

    END (AMPLIFIER ANTENNA ASSEMBLY [for Glass Side] IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  20. CHECK ROOF ANTENNA POLE SUB-ASSEMBLY


    1. Check that the roof antenna pole sub-assembly is securely installed.


    NG

    CHECK AND REPLACE ROOF ANTENNA POLE SUB-ASSEMBLY

    OK

  21. CHECK QUARTER WINDOW ASSEMBLY RH (WINDOW GLASS ANTENNA WIRE)


    1. A004NUYE27
      Text in Illustration
      *a Tester Probe
      *b Antenna Wire
      *c Tin Foil

      Check for continuity in the window glass antenna wire.

      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 window glass antenna wire.

    NG

    REPAIR QUARTER WINDOW ASSEMBLY RH (WINDOW GLASS ANTENNA WIRE) Click here

    OK

  22. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Disconnect the RA radio and display receiver assembly connector.

    2. A004MKOE07

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

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

      Ignition switch ACC

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  23. CHECK AMPLIFIER ANTENNA ASSEMBLY (for Glass Side)


    1. A004S70E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly [for Roof Side])
      *b

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the antenna connector from the amplifier antenna assembly (for Roof Side).

    2. Disconnect the antenna connector from the radio and display receiver assembly.

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

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

    NG

    REPLACE AMPLIFIER ANTENNA ASSEMBLY (for Glass Side) Click here

    OK

  24. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. A004UCBE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly [for Glass Side])
      *b

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the antenna connector from the amplifier antenna assembly (for Glass Side)

    2. Disconnect the antenna connector from the radio and display receiver assembly.

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

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

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  25. CHECK AMPLIFIER ANTENNA ASSEMBLY (for Roof Side)


    1. Replace the amplifier antenna assembly (for Roof Side) and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

    OK

    END (AMPLIFIER ANTENNA ASSEMBLY [for Roof Side] IS DEFECTIVE)

    NG

  26. CHECK AMPLIFIER ANTENNA ASSEMBLY (for Glass Side)


    1. Replace the amplifier antenna assembly (for Glass Side) and check if radio broadcasts can be received normally Click here.

      OK
      Radio broadcasts can be received.

    OK

    END (AMPLIFIER ANTENNA ASSEMBLY [for Glass Side] IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here