Quote:
Originally Posted by BodhiBenz1987
Here is a link: http://www.w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/ETM/ETM.pdf. My car has a build date of Dec. 86. Section 130 has the pages covering this circuit. I've been trying really hard to learn to read these things, and I have a good feel for what belongs in what circuit and roughly where problems might be, but I have a hard time understanding it when I actually sit down in the car with a multimeter looking at all the wires. I really had high hopes the N40 block would do it because the lack of voltage coming out of it explains all the lights that are out. Unfortunately now I need to find out an explanation for the lack of voltage from that pin of N40, since it's not just a bad N40.  |
I took a brief look at the link. Unplug N40 and with power off (ignition key out), measure resistance from pin 2 of N40 socket to ground and make sure there is no short, i.e. it should not read zero ohms. If you do. that can explain the blown fuse. If you get zero ohms, find and fix the short before testing another N40.