Reading Codes - Page 7 - PeachParts Mercedes-Benz Forum

gsxr · #91 05-18-2008, 07:04 PM

Quote:

Originally Posted by JimF

If you check Menu#9 on my site, you'll see that DTC#2 is a 'catch-all'. It lists all of faults possible b/c "2", by definition, means that the "system" doesn't "know" which part is bad!

Jim, exactly... that's why I want the HHT. It will cut 14 possibilities down to 4 or less. Check out my post here for more info.

Quote:

Originally Posted by JimF

If you read further, DTC#3 "points" to the culprit (M16/1) and, another example DTC#5, points to the Stop Lamp switch (S9/1) just as DTC#6 points directly to the NSSw (S16/3).

I've never had DTC#3 appear. I have had #6 appear frequently, but it shows up without the problem occuring (light on, limp home mode activated). Only #2 would appear when problem occured.

Quote:

Originally Posted by JimF

As you read in Menu#24 (Update: ASR Revisited (10/19/07) . . . .) toward the bottom of the page, I replaced the Neutral Safety Switch and the "ETA" was fixed.

I did see that... but again, I did not have the same codes appearing as you did.

Quote:

Originally Posted by JimF

My point, if you haven't gotten it, is that you do have an ETA problem but I'd bet it's not the ETA but one of other parts in the "chain"; ie, S9/1 or S16/3.

I agree! I did change S9/1 (stop lamp switch) but that did not cure the problem. Just two days ago I changed S16/3 (starter lockout/backup lamp switch) but I haven't put enough miles on the car to see if it's cured. Unfortuntely (or fortunately, depnding on your POV!) the problem only happens at WOT, and maybe 1 out of a dozen WOT runs.

Quote:

Originally Posted by JimF

I also picked up a Palm Scanner and it did point to the S16/3 as the culprit: my tech's AST Retriever did not. We had quite a discussion about it since he was convinced that S16/3 wasn't in the "path".

OK - this confuses me. How could the (Trisco?) Palm Scanner pick up a code that the AST Retriever did not? I thought the mega-buck AST unit would read absolutely everything the Palm could, plus much more??

JimF · #92 05-18-2008, 09:44 PM

The AST Retriever is a gem . . esp w/ the Live Data feature.

But my Palm did give DTC#6 when reading the "EA/CC/ISC" module so that's the first time I had seen that readout.

When you get yours, it will read the 'sub-codes' ok.

gsxr · #93 05-19-2008, 10:59 AM

Quote:

Originally Posted by JimF

When you get your [Palm], it will read the 'sub-codes' ok.

Jim, if the Palm will read 'sub-codes', that is GREAT news. Does it show the 3-digit number like in my screen shot of the WIS, or does it just show the text description of the 3-digit code...?

JimF · #94 05-19-2008, 07:12 PM

Compare the codes in Menu#9 with what you posted in #86.

I believe you'll find that the codes read in the Palm Scanner will be what you call "sub-codes". Certainly not in the same order but good enough to help you diagnose.

BTW, somebody sent me a email recently and he purchased a used HHT for about $1500. If you look around, you may find one but personally, that's too pricey for me.

whunter · #95 02-20-2022, 11:05 PM

Updated links in this thread.

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