I have an '06 Town & Country, 3.3L and it won't start. Last night, it would start, run for about 2-3 seconds then stall. It did this several times, then it stopped cranking at all. It will not do a thing when the key is turned. All indicators and gauges on dash work, all accessories and lights work, battery is fully changed, all fuses and relays under hood are ok, fuel system ok, checked with scantool & no codes in PCM. Checked wiring diagram in manual and there are 2 yellow wires running into fuse box. - One yellow wire from ignition switch is hot when turning key. Other yellow wire (I'm assuming is from trans range sensor) however, is not. I suspected the trans range sensor, but the gear selector indicator on dash & reverse lights work normaly. I jumped the yellow/grey wire from starter relay to the battery with ignition on and engine cranks, so starter is ok. Spark test while cranking with ignition on showed no spark. Something appears to be disabling the ignition and starter. Anyone have any ideas? Thanks!