Pinpoint Test H: Radio Interference

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

H1 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 audio unit to a station where the interference is present.
- Key in OFF position.
- Disconnect: Generator C102a.
- Key in START position.
- With the engine running, determine if the interference is still present.
- Is the audio 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.