I've had the error code P0341 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor). I've checked continuity between the Camshaft Position Sensor and the PCM checking pin 7 of this diagram (for the 1999 Grand Prix)

http://i784.photobucket.com/albums/yy122/SS-Jon/PCM%20Connector%20Pinouts/1999-C1-1.gif
What other probably causes are there? What else should I check?