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Pinpoint Test B: Poor Reception

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK ANTENNA CABLE CONNECTIONS 
    • Key in OFF position.
    • Disconnect: Audio Unit.
      • NOTE: If antenna lead-in cable connections are loose, check all three contact tips for compression.
      Fig 1: Disconnecting Audio Unit
      G03890418Courtesy of FORD MOTOR CO.
    • Check the antenna cable connections.
    • Are the connections clean, secure, and in metal-to-metal contact? 
    • Yes  : GO to B2.
    • No  : CLEAN and SECURE the antenna cable connections as necessary. If necessary, BEND the contact tips outward to obtain a more secure fit. If the contact tips are broken or damaged beyond repair, INSTALL a new antenna cable. TEST the system for normal operation.
  2. B2 CHECK ANTENNA MOUNTING CONNECTIONS 
    • Check to make sure the antenna is securely mounted to the vehicle body at ground points, and the screws are not stripped.
    • Are the contacts clean, secure, and in metal-to-metal contact? 
    • Yes  : GO to B3.
    • No  : CLEAN and SECURE the antenna, as necessary. TEST the system for normal operation.
  3. B3 CHECK SUPPRESSION EQUIPMENT 
    • Check all necessary suppression equipment and radio grounding strap for security, cleanliness and metal-to-metal contact. For suppression capacitors and ground strap locations, refer to AUDIO UNIT .
    • Are the contacts clean, secure and in metal-to-metal contact? 
    • Yes  : GO to B4.
    • No  : REPAIR or INSTALL new radio suppression equipment or grounding strap as necessary. TEST the system for normal operation.
  4. B4 CHECK MOUNTING AND CONNECTING CIRCUITS 
      NOTE: The capacitor mounting points are used to complete the electrical circuit and must be mounted securely to clean surfaces.
    • Check the mounting and connecting circuits of the radio ignition interference capacitors for security, cleanliness and metal-to-metal contact.
    • Are the contacts clean, secure and in metal-to-metal contact? 
    • Yes  : GO to B5.
    • No  : CLEAN and SECURE the connections as necessary. TEST the system for normal operation.
  5. B5 CHECK RADIO IGNITION INTERFERENCE CAPACITOR(S) 
    • Check the operation of the radio ignition interference capacitors by installing a known good component.
    • Key in START position.
    • Turn on the audio unit and check the reception.
    • Is the noise eliminated? 
    • Yes  : INSTALL a new radio ignition interference capacitor(s) as necessary. TEST the system for normal operation.
    • No  : GO to B6.
  6. B6 CHECK GENERATOR 
    • Key in OFF position.
    • Check the generator by disconnecting the wiring harness from the voltage regulator.
    • Key in START position.
    • Turn on the audio unit and check the reception.
    • Is the noise eliminated? 
  7. B7 CHECK IGNITION CIRCUITS 
    • Key in OFF position.
    • Check the ignition circuits for correct routing, grounding and security of connections.
    • Are the circuits OK? 
    • Yes  : GO to B8.
    • No  : REPAIR the circuits as necessary. TEST the system for normal operation.
  8. B8 CHECK IGNITION SYSTEM 
    • Test the ignition system.
    • Is the ignition system OK? 
    • Yes  : GO to B9.
    • No  : REPAIR the ignition system as necessary. TEST the system for normal operation.
  9. B9 CHECK AUDIO UNIT MOUNTING POINTS 
    • Check the audio unit mounting points for security, cleanliness, and metal-to-metal contact.
    • Are the mounting points clean, secure, and in metal-to-metal contact? 
    • Yes  : GO to B10.
    • No  : CLEAN and SECURE the connections, as necessary. TEST the system for normal operation.
  10. B10 SUBSTITUTE THE ANTENNA 
    • Substitute the antenna with a known good antenna.
    • Key in START position.
    • Verify the operation of the audio unit.
    • Is the noise eliminated? 
    • Yes  : INSTALL a new antenna. REFER to ANTENNA . TEST the system for normal operation.
    • No  : GO to B11.
  11. B11 SUBSTITUTE ANTENNA CABLE 
    • Key in OFF position.
    • Substitute a known good antenna cable.
    • Key in START position.
    • Verify the operation of the audio unit.
    • Is the noise eliminated? 
    • Yes  : INSTALL a new antenna cable. REFER to ANTENNA . TEST the system for normal operation.
    • No  : REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. TEST the system for normal operation.
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