In the MB Climate Control documentation they refer to an "Impulse Counter." Does anyone know any detail about this?

Does it simply count pulses every so many seconds? Is there anyway I can substitute for this instrument?

I expect that if I had an oscilloscope it would be easy to figure out, but I don't have one and no access to one.

Thanks for your help,

Larry, read these:
http://www.peachparts.com/shopforum/showthread.php?threadid=7867
http://www.peachparts.com/shopforum/showthread.php?threadid=71814
Reg. Mike

myarmar,

THANKS for the research. This is EXACTLY what I need. I think have everything in my electronics component junk to make an LED box, except the momentary switch and box itself. A trip to the Radio Junk store should get that.

Thanks,

A simple box is made from a plastic 35MM film container.
Hole in the bottom for lead exit and 2 holes in the removable top for sw./led mountings. This allows using the sw. for a terminal board and then just snap the top back on the container when wiring is done. [ If you use a clear film container , the led need not be mounted on the lid , as it can be seen in the clear can] .
Simple , fits in your hand nicely, with the sw. being ergo- operated w/thumb...
Also, if you go to RS , they now have a led with bulit-in resistor for 12 volt operation..
Part # 276-209.
Saves from going with the extra dropping resistor and extra wiring..

Hi

Anyone that knows how all this works on a 1998 CLK 320 cab. It does not have an OBDII connector since it is a european sold car. I have started a thread (http://www.peachparts.com/shopforum/showthread.php?t=98704) where I ask if there are anyone that knows how to do diagnostics (and reset) using the 38 pin connector (X11/4) and if anyone knows if there are any PC based scanner/tools that I can use, either direct or with some modification on the hardware.

Thanks for your help
/Michael

Mick,

Sorry I can't help. I thought that Steve Brotherton had answered this in your thread.

Arthur,

I already made one and did the test. I used a plastic project box and got fancy with a panel fuseholder and a resistor in series with the LED.

I only got one blink, so there were no codes present. I found three bad vac pods bad under the dash. I wanted to see if there were any other problems, like maybe a bad temp sensor, I wanted to know so that I could replace them while the instrument panel was off.

Have a great day,

You must have a power probe. Just stick the point in the appropriate socket, hit the negative switch, and count the pulses. I don't have my DTC book here right now so I don't know which socket. If you have questions, call Baum Tools and ask for Pete Koupas or tech help. Pete's # is 1 (415) 308-2084.

Peter

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Hi Larry,

Steve Brotherton is working on it. I just thought it could be a good idea to post my problem/question here as well, since I was notified to look at this and some other thread, which could be of use to me.

Peter,

Thanks, I will check the Baum tools.

Another question. I now have learded that there should be a Diagnostic Manual that describes "everything" related to the connector and diagnostics. Where can I find such manual ? Is there a stand-alone manual for this or is it part of some of the other "to expensive" workshop manuals, like WIS and EPC (that I cannot afford to buy) ?

/Michael