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Pinpoint Test C: Continuous Seek/Scan In Am/Fm

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. C1 CHECK THE ANTENNA FOR DAMAGE 
    • Key in OFF position.
    • Disconnect: Antenna Lead-in.
    • Measure the resistance between the antenna cable terminal, audio unit side and the antenna cable, antenna side.
    • Is the resistance less than 8 ohms? 
    • Yes  : GO to C2.
    • No  : INSTALL a new antenna cable. REFER to ANTENNA . TEST the system for normal operation.
  2. C2 SUBSTITUTE THE ANTENNA 
    • Yes  : INSTALL a new antenna. REFER to ANTENNA . TEST the system for normal operation.
    • No  : CONNECT the original antenna. SEND the audio unit to an authorized repair facility. TEST the system for normal operation after the repair.
    • Key in START position.
    • Substitute a known good antenna. Refer to ANTENNA . Ground the antenna base to an unpainted metal surface on the vehicle.
    • Check the operation of the audio unit.
    • Does the audio unit operate correctly? 
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