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Home >> Lexus >> 2007 >> ES 350 >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Navigation System (Except Hybrid)) >> Navigation System >> Radio Broadcast cannot be Received or Poor Reception >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK RADIO AND NAVIGATION ASSEMBLY 
    1. Check the radio's automatic station search function.
      1. Check the radio's automatic station search function by activating it.

        OK: The radio's automatic station search function works properly. 

      OK: REPLACE RADIO AND NAVIGATION ASSEMBLY 

      NG: Go to Next Step 

  2. INSPECT Identifying Wrong Method Of Disc Cleaning 
    1. Disconnect the radio and navigation assembly connector F9.
      Fig 1: Identifying Radio And Navigation Assembly Connector Terminal
      G04980889Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

    Standard voltage 

    Identifying Wrong Method Of Disc Cleaning

    Tester connection Condition Specified condition
    ANT - Body ground Ignition SW on (IG) Radio SW ON 10 to 14 V

    NG: REPLACE RADIO AND NAVIGATION ASSEMBLY 

    OK: Go to Next Step 

  3. CHECK OPTIONAL COMPONENTS 
    1. Check optional components (sun-shade film, telephone antenna, etc.).
      1. Check if any optional components, such as sunshade film or telephone antenna that may decrease reception capacity, are installed.

        OK: Optional components are installed. 

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

      OK: REMOVE AND RECHECK OPTIONAL COMPONENTS  (See NOTE above )

      NG: Go to Next Step 

  4. CHECK RADIO AND NAVIGATION ASSEMBLY 
    1. Preparation for check
      1. Remove the antenna plug from the radio and navigation assembly.
        Fig 2: Locating Antenna Plug
        G04966922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check for noise
      1. Turn the ignition switch on (ACC) with the radio and navigation assembly connector connected.
      2. Turn the radio on and put into AM mode.
      3. Place a screwdriver, thin wire, or other metal object on the radio receiver's antenna jack and check that noise can be heard from the speaker.

        OK: Noise occurs. 

      NG: REPLACE RADIO AND NAVIGATION ASSEMBLY 

      OK: Go to Next Step 

  5. CHECK GLASS ANTENNA 
    1. Check for continuity of the antenna.

      HINT:

      Check for continuity at the center of each antenna wire as shown in the illustration.

      Fig 3: Checking Continuity At Center Of Antenna Wire
      G04966923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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 voltage, wrap a piece of tin foil around the tip of the negative 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 GLASS ANTENNA 

      OK: Go to Next Step 

  6. REPLACE ANTENNA AMPLIFIER 
    1. Replace the antenna amplifier and check that it operates normally.

      OK: The antenna amplifier operates normally. 

    OK: END 

    NG: REPLACE RADIO AND NAVIGATION ASSEMBLY