The two small wires at coil. The info I looked at was for 5.9 engine. You can take connector loose, use led testlite between terminals, have helper crank engine, see if testlite will pulse.
When you first turn on the key, does mil come on? Can you communicate with computer? If the computer is awake, that lite should come on? Another thing you can do, is turn on the key, check for ref voltage at any sensor, that uses a ref voltage. If you can't communicate with computer and ref voltage to anything, you may need to check voltage and ground circuits at the computer.
Monday, July 6th, 2020 AT 1:42 PM