2006 Volvo s40-T5 camshaft position sensors signal missing (ECM-340B, 341B and 342B)

[Labone]

I have a p1 2006 Volvo s40t5 AWD. recently i got X3 vida codes all at once
ECM 340B inlet camshaft sensor -signal missing
ECM 341B Exhaust camshaft sensor -signal missing
ECM 342B Camshaft position (CMP)-sensor -signal missing

I bought and installed the three new sensors, wiped the codes, re-seated the ECU then drove around the block for 10min. Re-connected vida and I am still getting the same error codes. The car also cranks for a long time without firing unless i wipe the codes with vida after every start cycle.
I need help with a wiring diagram that identifies the wires connecting at the ECU from the camshaft sensors so I can test the signal at ECU using a volt meter.
I would also appreciate someone to confirm if I am on the wright path by checking the wiring before sending my ECU for rebuild