My '91 Legacy Sedan cranks but won't start, and I've run out of things to check. It's not the fuel pump, filter, spark plugs, fuses, or timing belt. I can't figure out how to get the error codes. None of the instructions I can find apply to my car. Under my steering column I have 1 yellow, 1 green, and 2 black wires, but none of them fit each other, and I don't know how to get the codes without paying the dealership to do it. Does anyone know how to do it or what could be wrong with my car?