shirleyl,

Maybe coming here for FREE advice shows you,and others, how by coming here forces those of us who do technical work for a living must charge for minimum. I suppose you go to a dealer when your car has a problem and they just give out the answers to questions so you can go home and fix it yourself. ALLN1 gave you the answer, but it shows me that you don't understand enough to work on the system, and SHOULD contact a certified tech.

Scott.