Today Im checking out a 2017 Ford Expedition 3.5L Ecoboost Turbo ECU/ PCM/ ECM for a customer of mine. Has codes for Coil A,B,C,E, and F coils as open circuit but misfire on cylinder 1 and 2 only. I will be Checking the coil driver circuit. I do not have the 17 model schematics unfortunately at the moment but working on getting them for the 3.5L. Here is a thermal image Unloaded with only powers and grounds and CAN High and Low hooked up.
This image is hidden for guests.
Please log in or register to see it.
The ECU current Draw at 14.1V is 0.55Amps with a nice clear CAN Bus on the oscilloscope. Here is the thermal
This image is hidden for guests.
Please log in or register to see it.
This image is hidden for guests.
Please log in or register to see it.
Here is the internals of the ECU on one side.
This image is hidden for guests.
Please log in or register to see it.
New data will be added soon as Im currently troubleshooting and gathering more Information
Topic Author
