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Power Strokes
6.4 Tech
Truck Won't Crank Over
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[QUOTE="Bengel, post: 1413534, member: 17148"] Alright here we go. I was driving down the road about 40 mph and the traction control light came on and the fan was turning on at low speeds. The truck seemed to drive ok but the fan would engage every time I slowed down. I was not able to communicate with the ECM through my Tuner to read any gauges or codes. I shut the truck down and then it wouldn't crank over. I looked the truck over and noticed the positive cable on my passenger side battery was extremely corroded and it looked like it was even burnt or shorted out. I went and bought 2 new batteries and replaced the end on the positive cable. Went to start the truck and still nothing. Had the truck towed and started troubleshooting. For some reason the traction control light is still on. I pulled the PCM power relay out of another truck and the starter relay with no success. I don't even here a click when I try to crank. I jumped the solenoid at the starter and it cranks. I also jumped the relay (#54 I believe) and it would crank. It seems the ground comes through the ignition to power the relay? I still can not communicate with the ECM through the obd2 port. The port powers my tuner but I can't communicate. Anyone else run into this problem? Thanks in advance!!! [/QUOTE]
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