Quote:
Originally Posted by JimF
The HTT is a 'poor' tool . . quote from a senior MB tech . .
This table shows that it's not an "infallible" tool for diagnosing EA problems just as a normal scanner (AST Retreiver, etc) isn't. It give ambiguous codes as the table below shows.
The sub-codes are shown (and read if at fault) in subsequent DTCs in most scanners.
So if you think the "HHT" will point to the 'culprit', you'll be dissapointed!
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I missed this post somehow. The HHT (or other digital scanner that talks to MB OBD-1 systems) will do 100 times more than than a simple LED blink code reader to help point to the 'culprit'. And it does provide less-ambiguous codes than the analog blinks, although for some it may still not pinpoint them. However there are usually several codes, and by interpreting all the info provided, you can usually figure out what's going on.
I still have not found a scanner that is as comprehensive as the HHT. The MT-2500 does pretty well for the cost, but it has a number of annoying bugs in the software. I'm not sure if the CS2000 or AST Retriever were any better. The cheap Chinese SDS clones also have software & communication issues. The optimum tool is of course the genuine SDS, which is not affordable for a DIY user. And as Steve said, it emulates the original HHT for the early cars.
