Thanks for your info but the problem turned out to be mechanical rather than electrical.
Upon further investigation, I found the linkage from the actuator had pulled out, probably due to something being stowed in that area. I removed the whole assembly from the drivers side of the trunk area, pounded the ball of the linkage into the actuating slide and reassembled everything. And voila, it worked just fine.
Thanks for your help. Hope you have a great year.