All right guys I've got an odd one here. Got a customer with an 09 F-350 originally 6.4 diesel that has swapped in a 12v cummins. I plugged into it to read the ECM but all I can see is the TCM. I was able read and save the file but when I open the file it only shows transmission data. Would this be due to a missing ground on the ECM? Any help would be appreciated.
transmission data only, the only engine data i see is PTO.
It's not seeing the ECM so you have to find out why that is.
Really?Originally Posted by JaegerWrenching
Really!
Look for this ground top right of diagram. ECM Ground distribution.png You obviously need power and ground for the ECM and to have power and communication on your OBDII connector.OBDII.png
DRIVERSIDE under degas bottle you have 3 connections.. 1 big black plug, 1 big white plug and 1 small black plug. the 2 big connections can be a pain sometimes and if not plugged in correctly it will not communicate to pcm. check those connections.
is this a real question? can you find the ecm?
if it has a Cummins engine why would you need the 6.4 ecm side of the tune? or even need to see the data from the ecm side of it?
2003 Ford excursion 6.0 PSD
No limit intake
Straight pipe
Studded
EGR delete
KC billet single plane compressor wheel
Self Tuned
XDP Regulated return
RDP Fuel sump
AEM progressive water meth
Custom suspension air bags
8" lift
35" tires
12v cummins wont have an ecm. nice trolling....
I got it to where I can read the ecm and tcm all that is good. Disabled pats in the ecm and wrote entire. New problem is it isnt engaging the starter. All the cummins needs is a reference from the ecm like a signal to start and then it doesnt need the ecm after that.
Does it have power on the starter solenoid wire when cranking? How do you have the truck wired for the starter?
One thing i ran into on mine was if the Ford ECM didn't think the ford fuel pump had power it wouldn't send power to the starter. realized this when i left the relay out for the ford fuel pump when testing some stuff.
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