Hi
Ok just to let you know where I am with this. From the workshop manual this particular module is called a - Onboard power supply control unit J519.
I checked all the incoming supply voltages and all ok. So ended up just swapping the unit for the replacement I got and hey presto! All working, the wipers now operate correctly.
Re ran the auto scan and all the information is the same except the 09 showing - 2 Faults Found:
00538 - Reference Voltage
014 - Defective
00969 - Fuse for Heated Rear Window (S41)
014 - Defective

I don't have a rear heated window. I tried recoding this to 04 and now get - 1 Fault Found:
00969 - Fuse for Heated Rear Window (S41)
014 - Defective

So I guess not really a problem as everything is working.