1996 ford explorer no start problem(engine cranks) hooked snapon redbrick scanner w/ no communication, also no self test. power to and thru pcm relay, power to fuel pump relay but relay not...
I'm not a certified anything. Don't mind talking to you, though.
In the olds days to see if computer is awake, turn on the key, check ref voltage to any sensor that uses a ref voltage. If no ref voltage anywhere, have to check out the computer and wiring circuits, voltage and ground. I'm sure you know at the datalink connector, pin 16 is voltage and pins 4 and 5 are grounds.
Just about any relay that you can unplug, if you use a jumper wire between terminals on load side of relay, in diagram, the load side is that line with arrowhead, it will send voltage to anything the relay controls, the you check control side of relay, that coil symbol in diagram, for voltage and ground.
Just my opinion.
May 25, 2017 |
Ford Explorer Cars & Trucks