Reading Codes - Page 4 - PeachParts Mercedes-Benz Forum

Joseph_H · #1 08-18-2003, 12:03 PM

makes perfect sense! Thanks Jim.

wjm · #2 08-18-2003, 12:13 PM

As I said earlier, I did get a code on SRS Pin #30. The code seemed to indicate that the passenger air bag had been unplugged. I had taken it our recently to replace the aspirator motor. Now, after clearing the code, I get a single light blink.

Joseph_H · #3 08-18-2003, 12:34 PM

Quote:

[i]Now, after clearing the code, I get a single light blink. [/B]

Why would you get a status reading from your SRS and I can't? Your E420 is 94 and mine is 95... would that be the reason? I believe JimF mentions in his site the LED box works for up to 94 models (Analog)...

wjm · #4 08-18-2003, 12:41 PM

I really don't think that there is a difference in the computers between the 94 and 95... but I'm no expert. You seem to be getting back some feedback per your earlier message (1 blink), so I don't really see where you have a problem.

Joseph_H · #5 08-18-2003, 12:55 PM

Quote:

You seem to be getting back some feedback per your earlier message (1 blink), so I don't really see where you have a problem.

Willy, maybe I wasn't clear when I described the LED behavior when testing SRS module (pin-30). Normal behavior for the LED to go ON as soon as you press PB for 2-3 seconds to initiate the test. Then it should go OFF when you release PB and then LED will blink with DTC status number. What I experienced is that the LED “stayed” ON after I released PB without any delays and then went OFF.

wjm · #6 08-18-2003, 01:01 PM

Got it.

I find that I have to hold mine for about 4 seconds before reading codes.

Who knows... maybe there was a change between model years... but I really doubt it.

I tested for codes last night after a long weekend trip and no codes have popped up. #30 works just like all of the others.

Willy

Joseph_H · #7 08-18-2003, 04:46 PM

here is a picture of the X11/4 38-pin Diag Socket with active pins for my '95 E420 similar to what Willy found on his '94 E420. Also see more pictures below for related items.

JimF · #8 08-18-2003, 08:48 PM

Can't quite read the insert box. Do you have it in a more legible form?? Will post it on my page if ok.

Re SRS: It's a digital system in both '94 and '95 for 129s, 140s and 124s according to my sources.

wjm · #9 08-18-2003, 09:54 PM

Jim,

Yea, I'd like to get to the bottom of the SRS pin. I swear I got a code #4 on that pin.

Joseph_H · #10 08-18-2003, 11:52 PM

.. due to forum's file attachment limitations i had to cut down the resolution/size (~50k). I'll email you the photo file tomorrow (~110k) to post to your site with pleasure.