A corroded connection or bad wire can read good with the low current of your meter but not conduct well enough to handle the load of the compressor.
Mike On Jul 27, 2013 3:49 PM, "Kaleb C. Striplin" <ka...@striplin.net> wrote: > In about to set this 95 e300 on fire. All tests point to bad pbu, yet I > would think if by my figuring you jump pin 7 and 13 on the left harness in > the car compressor should kick on, it doesn't. I get about .6 volts at > those connection as same as I get at the pressure switch. If I put positive > at pin 13 which goes to fuse 7 and run a wire wire direct to ground I get > 12v. If ground plug in the pressure switch on the Klima side of the switch > compressor kicks on. If I have the switch hooked up and ground pin 7 in the > car with a wire running direct to ground compressor kicks on. I have tested > continuity between all wires the one from pin 7 in car to pressure switch, > it's fine, from other side of pressure switch to pin 10 on Klima it's fine, > from pin 1 on Klima to ground it's fine. That seems to be all the legs of > the circuit right? Maybe I need to test from pin 13 to fuse 7 in the fuse > box? Seems with positive of meter on pin 13 and neg to ground and I get 12v > that would indicate that wire is fine too, right? What piece of the puzzle > am I not getting. If all these wires seems to be fine then why won't > compressor kick on if pin 13 at pbu harness which comes from fuse 7 is > jumped to pin 7 which goes out to the pressur switch then on to the Klima > why won't that kick on the compressor? Maybe my limited electrical ability > is confusing me? Or is there more to the pbu kicking on the compressor that > that? Would the wires seem to test fine but still be bad or shorted or > something? > > Sent from my iPhone > _______________________________________ > http://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 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
