Chrysler Repair: 2000 Dodge Neon 0340 fault problems, dodge neon, electrian

Question
I have a 2000 dodge neon that I purchased with a broken timing belt ( the car had been sitting for 2 years). I changed the motor with one out of a wrecked 2000 neon. I installed a new timing belt and water pump while I had the engine on the back of my truck. I installed the motor and it cranked after three turns of the switch and ran smooth for about 1 minute then it just cut off like it ran out of gas. Now it will not crank, I thought it might have had bad gas so I removed the tank and cleaned it and the fuel lines. Timing still looks to be lined up and I have spark at all the plugs. I borrowed a scan tool and 1 code 0340 cam position sensor comes up. I removed the one from the old engine and installed it on the replacement engine, I still get the same 0340 code even if I erase the code it comes up again when I try to start the engine. I am wondering if the wiring or PCM could be at fault again this car sat for 2 years. I just dont understand why it cranked so good after installed and then just died and now I am not having any luck. I would appreciate any help on how to troubleshoot the harness and the PCM. I am an electrian and I do have a voltmeter, I just need to know what to look for and where to look. Thanks in advance, Mark

Answer
Hi Mark,
The persistence of the 0340 would make me wonder about the patency of the wires from the sensor to the power control module. If you can tell me the engine and whether the pcm has one or two plugs I can tell you which pins on the plug(s) to check. Also verify that you have 8V on one of the three wires at the sensor plug when the ignition is on (probably an orange wire, though again I can't be certain of that color). If the 8V supply from the PCM were out, that would of course mean now signal from the sensor (which is what the 0340 code says). You could also check between the other two wires (black/light blue and tan/yellow, possibly) to see if it shows a pulsed voltage between 5V and 0.3V as you turn the engine by hand via the crank pulley bolt, which would verify if the sensor is putting out a signal.
Roland
PS Sorry for the delay, I just found your question in the "pool"