Hi, I am trying to diagnose a fault in an ECM main board. I have a few Resistors R02 and R04 that are marked as shorted. Should they mark shorted? Attached is an image and I marked the location in a red circuit. Can someone please help me

 

I would say the values are 0.04 and 0.02 ohms,
So they would measure as short on a multimeter, they are current sense resistors.

 

Try to check or replace the 2 mosfet under the marked resistors.

PS.
Is it a delphi ecu on petrol opel engine?

 

The other thing you need to be aware of is that you cannot get an accurate resistance measurement of a component while it is still in circuit. You have to desolder the component.

 

Hi and thanks all for your help its delphi ecu i will check moset tomorrow the car seems to have a short as electronic play around doesn’t start sometimes. Ecu can’t get to the other side if board as it’s sealed or components with sealer. I will check also BCM as when connecting to computer it’s can’t find any modules and what i read is that BCM connects to modules

 

Its a delphi on a corvette 2005 C6

 

Hi I am checking the Mosfets they seem all ok but can't find any datasheets please see attached imaged

 

I now managed to open up the BCM module and I am trying to look for the faults I didn't find any shorted capacitors, MOSFETs seem good when checking the data sheet. I came across a video to read Eprom and transfer to a new board but have a problem identifying this Eprom from ST anyone has any idea, please or what I need to check? Attached are pics of the board

 

Quick update managed to connect to programmer found VIN incorrect updated the correct vin and will try tomorrow

 

Inspect carefully for cracked solder joints with magnifier. A fairly common fault on vehicle electronics.