Blink Code Tester
 

Hi all:
Just wondering if anyone could help me make a blink code tester or tell me how to use a multimeter to achieve the same result. A sensor from my climate control system is bad, so I would like to test and see which one is the culprit. I read somewhere that I need to remove my climate control push button unit and then use a special mercedes socket box to hook up the blink code tester, but I do not want to buy an expensive mercedes part that I will only use once. How can I do the same thing without any special parts, or maybe even just my multimeter? Thanks so much.

Can someone please help me out here? I just want to see if I can fix my climate control problem easily by changing a broken sensor.

search the posts..it's there
 

not sure oif the LED blinker you need is same as the one described in many posts here ... search for posts by "WJM" and he still has one active right now. Also JimF website has a schematics for one.. also covered in the posts I mentioned above. Good luck