Hello, I work at a repair shop and had a Yamaha Venture pull in, its an '88. The class system keeps throwing an E4 error message. I looked it up and I guess it means there is no voltage coming out of the air sensor. Now, when i turn the key I imagine I should hear the compressors kick on, but I'm getting nothing. Any idea on where I can get the full class system minus the computer itself?
Thanks!
Zac