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there check engine light was not on but P0320 was stored
P0320 - no crank reference signal at PCM
Ok, the TSB I was looking at does not apply. On this truck, the crank sensor is a 3 wire setup, w/ no splices involved. I would double check the connector at the sensor it self, and make sure the wires are not frayed or insulation has come anywhere between the sensor and the PCM. Also, pull the connector at the PCM and make sure there is no build up or corrosion there either.
What of the 4 wire splice located directly below the relay box. Does this year of Dakota have this feature.
Sorry it is a three (3) wire splice directly below the under hood fuse box. This sends power to the PCM, fuel pump and ignition. I am told that this splice can become corroded and fail connection. I know this is on earlier models of this motor. Is it on the 98 model as well?
No common issues w/ this on your vehicle, and no TSB's that apply. If you do need any wire diagrams, I can help, I have access to Chrysler's online repair manuals.
See below for the PCM diagram. There is no junction for the fuel pump, and ignition switch - they are on different circuits
Thanks for the schematics. So, the truck has still not stalled again. Although it has posted another crank sensor code and an ignition code not sure which ones. Short of replacing the ECM what is the next step you would recommend.