Crank no start problem
 

This is my first time on the forum. My 1999 SLK230 has no spark. Checked for signal voltage at coil pack none found. Crank position sensor checks good. Camshaft position sensor connector has three wires, ground and 12v on the other two. It should only have voltage on one and the other is the generated signal voltage and the ground. Where should I look now? Thanks Jmonty