I will give that a try tomorrow. If it runs I assume it indicates what? The pbu or wire between it and the switch is bad or wire to Klima is bad or what?
Sent from my iPhone On Jul 13, 2013, at 10:55 PM, Peter Frederick <psf...@earthlink.net> wrote: > You might try grounding the low pressure switch wire that goes to the KLIMA > with the engine running. This should engage the compressor if the KLIMA is > good as the only signal to the KLIMA from the PBCU is a ground. If it does > not come on, there is something wrong with the KLIMA or circuit to the > clutch. You can also test the clutch itself -- if the coil is OPEN, it > won't engage no matter what. > > Obviously you must have power to the PBCU to get it to operate, but since all > it does to operate the compressor is ground the signal wire to the KLIMA, the > PBCU unit being dead is like likely that some other failure. Do check the > fuse -- you usually get no fan and full heat if it's bad since the monovalve > will be open all the time. > > Peter > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
