I got a suspension fault code today while driving my 2010 rrs. Pulled the code and it’s c1130 air spring air supply. I suspect it’s the front valve block that causing the problem. Here’s why, raised the vehicle to off road height and checked for air leaks on the both front and rear suspension. Applied soapy water on both front and back and no signs of air leaks. Then I notice front slowly started to dropped. Applied soapy water again to make sure but can’t see any leaks from the suspension itself. So I’m guessing the front valve block is the culprit. Question is, how many valve block does the front have? One each for left and right? Where are they located?