http://www.aulro.com/afvb/discovery-...ml#post1525218
The first file in the above post is the LR diagnostic procedure for the 11.4 fault.
At the time LR were recommending replacing the SVS unit rather than the modulator unless there was fluid leaking from the switch housing.
I can't help feeling that option-b is just an "ugly hack", in that it bypasses rather than fixes the problem, whereas option-a an "elegant hack" as it actually fixes the cause of the problem. But that is just me :angel:

