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2005 PT Cruiser 2.4L non-turbo 5 speed standard. I drove it to work, it ran fine. I got in it to go to lunch and it won't crank. I hear the fuel pump presure up and the lights are good, but it will not tun over. I can jump from battery + to the starter solenoid, it will crank, but will not start. Turned the key to the run position jumped from battery + to solenoid, it will crank, but will not start. I replaced the ignition switch, no change.
1) How do I pull the codes?
2) Will a defective cam or crank sensor cause an engine not to crank?
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No, cam and crank sensor will not cause a "no crank" condition. Not on their own anyway. MAYBE if one of them shorted and took down the PCI Bus it's possible, however not typical. The IPM could have a problem. It powers up MANY things. Check ALL of your fuses.
Nowadays when you flip a switch or press a button, it just sends a request signal to a module telling it to do something. Ignition switch just shows STATE of position and doesn't actually send current anywhere.
I would like to say thanks to all how have taken the time to respond with suggestions and ideas. I would like to post the resolution in hope that it might help someone else. Resolution: I found the yellow ignition wire from the ignition switch to the positive trigger side of the ignition relay in the fuse box under the hood had been cut. A relay had been installed in series in the yellow wire. Obviously being used as a starter interupt. The relay was controlled by an GPS locater that had been mounted under the dash. The locater was malfunctioning and causing the intermittant starting problem.