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Pinpoint Test G : Radio Interference

NOTE: If the OEM ACM 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.
NOTE: If the engine is operated at greater than 2, 000 rpm momentarily, the generator self-excites. Make sure when the generator is disconnected the engine rpm stays below 2, 000 rpm. If it exceeds 2, 000 rpm, turn the ignition to the OFF position and start the test over again.
NOTE: Inspect for any aftermarket accessories that have been added to the vehicle. Check the wiring for these accessories and be sure they have not been attached to the generator circuits and are positioned away from the generator wiring.

  1. G1 VERIFY THE GENERATOR IS THE SOURCE OF THE RADIO INTERFERENCE

    • Start the engine.
    • Tune the ACM to a station where the interference is present.
    • Ignition OFF.
    • Disconnect: Generator C102B .
    • Start the engine.

    Is the interference present with the generator disconnected? 

    Yes  Refer to the appropriate Audio Systems article for the procedure.
    No  INSTALL a new generator. REFER to Generator - 2.0L GTDI  or Generator - 3.5L GTDI, 3.5L Ti-VCT, 3.7L Ti-VCT . TEST the system for normal operation.
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