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#1
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where exactly to read fault codes?
I read that other members seem to have an LED system for reading engine fault codes on their w124's.. apparently, this is somewhere on the passenger side near the battery.
I can't figure out exactly where this is supposed to be. The closest thing I found is highlighted in red, but there is no LED / pushbutton. Is this the right spot to look? Mine is a '93 300CE, does it not have the LED pushbutton system? |
#2
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picture attached.
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#3
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That is the correct connector, and here's where I was told to get the codes:
http://www.peachparts.com/shopforum/showthread.php?t=107630
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Gone to the dark side - Jeff |
#4
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thanks for that link, I actually have it bookmarked from my researching on this!
but, am I supposed to have a built in MB LED / pushbutton for basic diagnosis? I'm under the impression that some w124's have this. |
#5
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You need to build the code reader to read all the codes anyway. It doesn't really matter a lot whether you have the built in LED/pushbutton.
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#6
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I've recently been through this learning curve.
The built-in pushbutton only reads emissions (CEL) codes, there are many codes on pins 8 and 16 that are critical and will not read from the built-in button and LED. I built the box, using around $10-$20 of new parts from Radio shack (12v LED assembly, pushbutton, banana plugs, small plastic box) in around 30minutes and it is well worthwhile IMO. Doesn't tell you everything, but it helps.
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Gone to the dark side - Jeff |
#7
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No codes on pin 16...pin 16 is Pos+ 12v to power the tool. The pins are 8 for HFM amd 14 for EA/CC module. The confusion all are having on the PB is simply this: If the Car is CAL Emmissions , it has a PB and a CE lamp. If Not, it is Federal Emmisions. Simple...No CE , NO PB The car in question [ '93 300CE ] is Fed Emmissions and has neither PB or CE.
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A Dalton Last edited by Arthur Dalton; 11-08-2008 at 06:31 PM. |
#8
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wow thanks that super clears it up! off to radioshack!
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Bookmarks |
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