Ok guys I am new to forums, not sure were to post but ill try here.
Ihave a 08 that wont run. Starter turns over, has power, pump etc etc. No power to engine controls basically fuses f2-f5. Traced it to the dem relay (R1) not getting a ground.
Sooo were can I find a wiring diagram or any advice were to go from here. No codes other than master power to dme relay etc. Were does this ground come from? Directly from computer? Do I buy a $1600 computer? Is there something telling the computer not to power the relay?? Pulling my hair out please any adice is wonderful. Thank you guys.