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Old 09-28-2006, 02:17 PM
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Join Date: Aug 2005
Posts: 93
Some help with code reading please

Hi All ,
once again trying to get my convertible top down on my 500sl , I got this electric reading tool with black and red hookups I want to reset my codes to get the top down so I can put my hard top on for the winter , the tool I have is a Craftsman reader of some kind its got all these buttons , range , data hold , relative , ohms, vac, vdc, cap, f, c, freq % duty ma , a ac/dc and so on , can someone describe better to me on how to reset the code #10 to get my top down , were do I put the red wire and were do I but the black wire and how to reset ?? Thank you
I read this part but don't quite understand it ::::::::::::::::::

The tool I have is a Craftsman Auto-Ranging MultiMeter , is this the type of tool that I need to read and reset the code ????

To read top codes on a pre-'94 car you don't even need a "blink" tool! Just watch the flashes of the top switch, since it is wired in parallel with the diagnostic socket. To trigger the flashes, you must short the diagnostic socket #10 to chassis ground for 2 to 4 seconds. The flashes you see when you activate the switch have nothing to do with reading codes.

The diagnostics are wired to sockets of the car's main "diagnostic connector", X11/4 located just behind the left-side strut mount. It should have a plastic cover over it. The sockets are numbered from 1 to 16. The top control system diagnostic is socket #10.

Codes must be read one at a time. That is, you ask the system to issue a code, you read the code, you ask for another code, and so on. You ask a particular system for a code by electrically shorting the diagnostic socket to ground for 2 to 4 seconds. A second or two after the short is removed, a series of electrical pulses will appear at the socket. The number of pulses corresponds to the number of a code. The ignition must be switched-on for this process.

There are many ways to view the pulses for counting and reading codes. The simplest method is to watch the lamp inside the top switch flash. This is possible because one side of the lamp is wired to the diagnostic socket for the top control system.

Once you have read all of the codes, you may wish to go back and erase them. They are erased individually one at a time. To do this, read a code, wait a few seconds, and then short the diagnostic socket to ground for 6 to 8 seconds.

Last edited by jubie; 09-28-2006 at 02:34 PM.
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