Quote:
Originally Posted by Cal Learner
Dave, Can you clear up a question please? My 124 came with the first generation 8-pin diagnostic plug, push button and red LED (Calif version). I understand how the push button/LED works and what the separate pulses indicate. My question--does the early 8-pin connector also allow testing individual pins to get additional DTC as the later 16-pin and 38-pin ones do? If yes, can you direct me to the code key, b/c I've never seen anything but the codes referring to the LED pulses (in 1988, that was limited to 6 or 7 items). I hope my question is clear. Thanks.
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Cal, the answer is a conditional "yes"... meaning that yes, there are additional codes available at the 8-pin diagnostic port, however this will depend on model year. Early 124's have almost nothing available except very basic diagnostics from only the LED (check engine light). Later 124's will have codes available for the climate control (pin 7), SRS (pin 6), and things like ASD and 4Matic (pin 5). Pin 4 will have the diesel codes (I think), pin 3 should have the CIS codes. (?) But that's about it from the 8-pin port. It depends what model you have, and what year, etc.
Click here for a generic code list. You'll need to look at your 8-pin port and see if any of those sockets have contacts or not... if they do, you may be able to pull more codes with an LED blinker box. However I don't believe any of the 8-pin (CIS) models will have any live data available via digital scanner. The models with live data available will either have 16-pin or 38-pin diagnostic socket.
