Yes, Disconnect the relay and watch what stops working. Then wring that item out for short or rubs or electrical leak.
On Tue, Aug 6, 2019 at 4:59 PM Craig via Mercedes <mercedes@okiebenz.com> wrote: > I removed the automatic antenna from its mounting in the upper-left of the > trunk; since I hurt my lower back Saturday bending over the trunk that was > easiest thing to do -- a 10 mm hex bolt and one #2 Phillips screw. > > I was able to disconnect the power/control plug from the antenna, which > was hampered by the presence of the analog telephone duplexer, and then > continued my trouble lamp testing. > > There was still a small drain (variously between 100 and 250 mA). The > system finally settled down to where if I disconnected Fuse 9, the lamp > went out. When I reconnected it, the lamp would glow brightly until a > relay clicked in and released and then the lamp would glow dimly. > > By ear and hand, I traced it down to the relay shown in the attached > picture. Page 2 of the W124-Schematics.pdf file I have (which is page 102 > of the document) says the relay is "K24 Convenience Relay". > > [Interestingly, at least one of the relays has been replaced, the orange > one -- K9 Auxiliary Fan Relay -- has a manufacture date of 15 Dec 2004.] > > So that started a visual search for the relay on the schematic pages, > which are, unfortunately, pictures, so I cannot electronically search for > the K24 designation. > > I found K24 on page 105/1 (page 6 of the PDF) where it is connected to > fuse G, on page 107 (page 8 of the PDF) where it is connected to fuse G > and fuse H (both 25 A fuses) both of which power N57, the "Convenience > Control Unit". > > The "Convenience Control Unit" shows up on > page 144/2 (PDF page 136) in relation to the power windows switches > page 144/4 (PDF page 138) in relation to the power windows motors > and > page 144/5 (PDF page 139) in relation to the N26 Anti-Theft Alarm > Control Unit > > > Now all I need to do is figure out is what all this is telling me. I'm > not sure what controls K24's coil -- that's what I need to find first, > I think. > > Anyone have any suggestions? > > > Craig > _______________________________________ > 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
