Chrysler Repair: Engine turns but will not start: 3.8L minivan, oxygen sensors, crank sensor

Question
I have a Chrysler 2001 town and country mini-van with a 3.8 liter engine.  The engine will turn but not start.  I can take a jumper from pin 30 to pin 87 on the ASD relay and it will start.  Put relay back in and it will not start.  The jumper puts 12 volts to the coil pack.  I have also replaced the cam sensor and crank sensor to no prevail.  Was wondering what else it could be.  Could the oxygen sensor be shorted.  Please help!!

Answer
Hi Mike,
If you jumped from 30 to 87 and it started then it would appear to me that there is no short in the oxygen sensors/injectors as that would still have occured, so evidentally it isn't there. I would try substituting the transmission control relay for the ASD and see if that will work which would suggest you have a bad ASD relay. Does fuel pump run for a second when you turn the ignition to "run"? It should and so that too would suggest a bad relay if it didn't.
If still no start, then I would test the connection from pin 85 of the ASD to pin 67 of the powertrain controller which is the ASD relay 'close' wire. The sensors I would think are ok enough to produce a timed spark, so the powertrain controller should ground that 'close' wire.
Those are a couple of ideas to try. Let me know how it works out, please. Use the thank/rate tab below to get back with the results without having to wait for me to be available for a question. There is a section for comments.
Roland

where is the transmission control relay located. I am not finding it in the IPM nothing is labeled with this. Please let me know. Also the fuel pump does run when key is turned on. I have tried the horn relay with the ASD and it still did not start. Please let me know. Thanks

Forget about the trans relay, I was just suggesting a relay of the same size/part number as the ASD to switch with it. On the fuel pump  run issue, I was mistaken as that is controlled by the PCM not the ASD so it is not relevant.
The bottom line is that the ASD relay is not being ordered to close by the PCM. Either the wire I sighted is not connected, or the signal from one or the other sensor is not strong enough for the PCM to close the ASD relay. So check the wire and then verify that you are getting 8V on the orange wire at both sensors. Then turn the engine over by hand with the ignition switch in the run position (using the bolt on the crank pulley to turn it) and observe for the pulsing between the black/light blue sensor ground wire and the gray/black (crank) and the tan/yellow (cam) signal wires, respectively. The voltage should oscillate between 5V and 0.3V several times per revolution. If that is happening and you have connection from pin 85 ASD to 67 PCM, and you could also check whether that wire switches from 12V to ground while you are cranking, and if it does then the relay should close. If it doesn't ground, and if then everything else passing inspection, one would believe that the PCM is faulty.
Roland