check charge system
 

there is also a possibility of the ground under the engine bay fuse box. It is true that volt will throw the DIC for the check charge sytem, it is too high!! Also check the DIM fuse 10A under the back seat if it is blown. The generator will not give correct output if it can't comunicate with the computer!!! Igave the fuze box ground issue as alot have had that problem before. After that, put your display to the volts and reset it.