2002 Sonata 4 cyl. no.3 spark plug wire, no spark?

Check engine error code: P0340. Camshaft position sensor A problem. I replaced this sensor. Won't start. I checked the spark at the plug wire. I pulled each wire boot off and stuck the screwdriver in and cranked. Every wire had spark jumping off the screwdriver to the valve cover except no. 3. The 2nd and 4th plug wire has an ignition coil pickup. The 2nd plug wire, no.3 firing order didn't fire through pickup. I switched it with 4th plug wire, no.2 firing order and the pickup worked. Both ignition pickups worked. Problem: 2nd plug wire no.3 firing order doesn't give spark. Will do compression check on each cylinder to see if I have enough compression. Will check manual diagram to see what feeds 2nd wire. Need your help. Thanks, Brian...