NAVIGATION SYSTEM (for DVD) Radio Broadcast cannot be Received or Poor Reception

WIRING DIAGRAM

A017E19E16

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK NAVIGATION 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 NAVIGATION RECEIVER ASSEMBLY Click here

    A

  2. CHECK OPTIONAL COMPONENTS


    1. Check optional components (sun-shade film, telephone antenna, etc.).


      1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.

        Result
        Result Proceed to
        Optional components are installed A
        Optional components are not installed B

        Note

        Do not remove optional components without the permission of the customer.


    B

    CHECK NAVIGATION RECEIVER ASSEMBLY Click here

    A

    REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)

  3. CHECK NAVIGATION RECEIVER ASSEMBLY


    1. A017DOU

      Preparation for check


      1. Remove the antenna plug from the navigation receiver assembly.

    2. Check for noise


      1. Turn the ignition switch to ACC with the navigation 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 navigation receiver assembly antenna jack and check that noise can be heard from the speaker.

        OK
        Noise occurs.

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  4. CHECK WINDOW GLASS ANTENNA WIRE


    1. A017E1JE01

      Check for continuity of 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 antenna.

    NG

    REPAIR WINDOW GLASS ANTENNA WIRE Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - AMPLIFIER ANTENNA ASSEMBLY)


    1. Disconnect the E6 navigation receiver assembly connector.

    2. Disconnect the E5 amplifier antenna assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E6-8 (ANT) - E5-1 (B) Always Below 1 Ω
      E5-1 (B) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. A017B0WE40
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Amplifier Antenna Assembly)

      Reconnect the E5 navigation receiver assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E5-1 (B) - Body ground

      Ignition switch ON

      Radio switch on

      		 11 to 14 V

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  7. CHECK ANTENNA CORD SUB-ASSEMBLY


    1. Remove the antenna plug of the navigation receiver assembly and amplifier antenna assembly.

    2. Measure the resistance between the amplifier antenna assembly and navigation receiver assembly to check for an open circuit in the antenna cord sub-assembly.

      Standard Resistance
      Below 1 Ω

    3. Measure the resistance between the antenna cord sub-assembly and body ground to check for a short circuit in the antenna cord sub-assembly.

      Standard Resistance
      10 kΩ or higher

    NG

    REPLACE ANTENNA CORD SUB-ASSEMBLY Click here

    OK

  8. REPLACE 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.

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

    NORMAL OPERATION