Checked that too.i don't see how people can mix them up.the crank sensor plug on mine will only reach the crank sensor.
I unbolted the harness holder so I could swap the plugs around to see if that was it,nope.
Cranks for 2 seconds and quits
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Checked that too.i don't see how people can mix them up.the crank sensor plug on mine will only reach the crank sensor.
I unbolted the harness holder so I could swap the plugs around to see if that was it,nope.
Need to try a known good ficm and ecm from good running truck. You will need to do vats relearn again.
Doesn’t the two sensors use different voltage to operate? Sounds like the ecm is junk, but I could be way off
Yes.5v to cam sensor,which I have.12v to the crank sensor,wich I have.my volts are correct.my grounds are good.i had to swap harnesses so I know the block grounds are good.
I have fluctuating voltage on the signal wires.j don't know what those should be but I assume the sensors are working?
Ok so I been poking wires and connectors while looking at diagrams again.
It appears that I have no power to ign 1 at pin 19 in C1 at the ecm
I powered it up and had someone crank it.it cranked and cranked but no start.i took power away and cranked it myself and it cranked with no start.now I'm back to the 2 second thing.
It appears that I have no power to ign 1 at pin 19 in C1 at the ecm
I powered it up and had someone crank it.it cranked and cranked but no start.i took power away and cranked it myself and it cranked with no start.now I'm back to the 2 second thing.
The FICM also gets a copy of the crank/cam signals, so if it is damaged, it could be distorting those signals.
If you have a FICM off a running truck, might try swapping it on and see what happens.
If you have a FICM off a running truck, might try swapping it on and see what happens.
Wish I did but this is the only lly truck I have here.everybody we know has older or newer.a new one is 700.00.
Ignition 0 pin 18 in c1 at the end is a green wire that goes down to I guess it would be the neutral safety switch on the tranny.i have an extra truck side harness for the truck that I'm using to find out where wires go.
Should I have power to ignition 0 and 1?
Should I have power to ignition 0 and 1?
Someone broke or ripped out the park safety switch in the column, I took the one out of my LLY and LMM
If you have the truck in a bind like I did going to the rig one day and are banging from drive to reverse to fast and hit park, the cable pulls on the shifter too hard and won’t let the park switch release, I had to break the on on the LLY unknowing at the time what the hell was going on or what I had broke when I finally got it into gear