I have HW wiring diagrams and amongst them is an MSD8x wiring through CAS. I know we can get password via obd but what if I don't have the car!!
So I wired the dme according to three different diagrams and in all cases I get an error about inability to switch voltage. Tried with and without the CAS, no luck. It looks like MSD85.1 cant be accessed on bench? I wanted to read password on bench then change ISN on dme in boot mode. Nothing doing.
So my question is, What are these msdx diagrams for? Or is it only the msd85.1 which is a challenge?
Now I will have to go to the car and work it from OBD. Could it be there is a way around this so we can do all by bench for this ecu?