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Test H: Radio Interference

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the Original Equipment Manufactured (OEM) audio unit has been replaced with an aftermarket unit, the vehicle may not pass this test. Return the vehicle to OEM condition before following this pinpoint test.

  1. Verify Generator Is Source Of Radio Interference

    Start engine and let idle. Tune radio to station where interference is present. Turn ignition off. Disconnect generator 3-pin connector. Start engine and let idle. Is the interference present with the generator disconnected? If yes, diagnose the in-vehicle entertainment system. If no, install a new generator. See GENERATOR  under REMOVAL & INSTALLATION. Test the system for normal operation.
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