Checking the component
NOTE:
This check only applies to chassis number 1-116810.
Interference from the upper electronic module can take the form of a "helicopter-like sound" in the audio system. This is due to a long ground lead which in some cases can act as an antenna.
The problem can be remedied by replacing the older type of front interior lighting with a new type of front interior lighting with a ground lead (1) as illustrated.
NOTE:
When installing ensure that the ground lead is not clamped between the clips and the roof. See the markings in the illustration.
Remedy as necessary.
Other information:
- To access the interior lighting, see Courtesy lighting, front, replacing .