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Home >> Mercury >> 2005 >> Montego Base, AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Charging System - General Information >> Diagnosis And Testing >> Charging System >> Pinpoint Tests >> Pinpoint Test G: Radio Interference >> Testing

Pinpoint Test G: Radio Interference: Testing

  1. G1 VERIFY THE GENERATOR IS THE SOURCE OF THE RADIO INTERFERENCE 
    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.
    • Key in START position.
    • With the engine running, tune the radio to a station where the interference is present.
    • Key in OFF position.
    • Disconnect: Generator C102b.
    • Key in START position.

      With the engine running, determine if the interference is still present.

    • Is the interference present with the generator disconnected? 
    • Yes  : REFER to ENTERTAINMENT SYSTEM - GENERAL INFORMATION for the diagnosis and testing of the in-vehicle entertainment system.
    • No  : INSTALL a new generator. REFER to GENERATOR AND REGULATOR . TEST the system for normal operation.
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