Drivers door lock not working from fob

[Mark Cavill]

Hi.

Problem with 2005 Honda Jazz.

Drivers door lock won't lock or unlock from the fob. All other door locks work fine.

All will lock and unlock using key action but drivers door only won't work from the fob.

Bought a new complete door lock assy, same problem on drivers side. 

Plugged the new lock into passengers side and all works fine on that side.

Obviously some kind of wiring issue, no signal being sent to the lock on drivers side but can't work out how to test it.

Any ideas?

Thanks