Why won't my pathfinder crank to start

I have replaced the cam shaft and crank shaft sensors. It fails to crank. The starter only turns when I removed it and put power to it. There is power going to it when installed. When the key is turned to START, only a click is heard at the starter. No crank.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0