need your help guys.. no power to ecu.. security light stays on and radfan kicks on.. and tcs off and slip light on... wont start..

 

Did you try replacing your ECU relay? Also, remove the fuse panel cover at your left foot kick plate and check for a blown engine control/ignition fuse.

 

all fuses and relays are good.. is it possible a NATS issue??

 

More than possible it's NATS. Have you tried your spare key? How about a scan for BCM codes?

 

i tried to scan but the ecm is not recognizing in scanner..

 

Is the ECm power supply running 5volts or 12volts?

 

If your ecm is not getting power, you can't scan it for codes....

 

Is the ECm power supply pin#119 and 120 running 5volts or 12volts?. coz i got only 5volts to my meter tester..

 

Plzzz help I have this exact problem... any update on how you fixed it??? Was is the relay or ecu?? Anybody else had this tried looking for hours on these exact symptoms. Last week my car went into limp mode and I couldn't rev past 1500 and the TC and slip light was on. Negative on battery was fried. Battery checked was good, I bought a new cable took off the 3 grounds to the frame and engine. Sanded them and reset battery. Ran fine for like 5 days then just shut off on me while driving and wont start
plzz hellp!!!!!

 

And yes my alarm light is solid when the key is in the on position

 

Check the cam shaft sensor. It happened to me And I was able to pull the code. The sensor is around 40$ and easy to replace with hand tools.

 

Ok guys I solved the issus and will explain what it was for me and hopefully you can find the problem. When my negative on the battery was fried I figured something had to be grounding out or a short in my wires. Looked all over found nothing. Now I had my jack in my truck which is gutted with a flattened box in there (for noise) and it's been rolling around so I looked in the trunk and there were some wires by the back right taillight that was shredded and grounded out. So I got them back together and taped then I checked all the fuses under the steering wheel all were fine. Prongs a little burned but nothing popped. Yes I replaced them anyways then looked at the fuses I'm the engine bay. Found the one for the ignition and eccs (I think) was popped. Replaced that with all the fuses. And she fired right up had and has been starting fine since. Yes mine was a rare case because of my jack ripping wires but no it wasnt any sensor or key issue so I'd recommend checking for wiring and fuses if you had my situation and you go waste a bunch of money. Cost 20 bucks for 2 boxes of fuses