reading OBD codes using ignition key
I used the technique of turning on and off the ignition key three times, then leaving it on to read the code flashes from the yellow engine icon on the dash on my 2005 grand cherokee. I received ten flashes in succession.
I know from other cars ( my corvette ) I can interprete the codes against a code list. I do not know the code list for a 2005 grand cherokee, does anyone know?