Thanks for the reply.
I usually post all logged codes whether they appear relevant or not.
Although the front SAM is reporting faults it is giving ignition 12v To the fan module.
What concerns me is the change in signal voltage with the module plugged or unplugged.
Will power up the fan module independantly of the car tomorrow and see what voltage I get on the command pin.
I talked to the customer after my post and he said the MB tech remarked on the lost of sound deadening from the bonnet, but there were no remarks about the nest which was about the size of a small melon.
Shaun
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