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P3 Autokrafte

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About P3 Autokrafte

  • Rank
    Contributing Member

Profile Information

  • Gender
    Male

Profile Fields

  • From
    Dayton, Ohio
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    1981 930
    1969 911t
    chrysler t&c minivan
    BMW 540it
    06Audi A3 3.2Q
  • Former cars
    87 928S4
    1972,73,74 914
    1986 944t #1
    1986 944t #2
    1987 944na track car
  1. Hey everyone, my name is Danny King I am the owner of P3 Autokrafte I Dayton Ohio. Is anyone on this forum familiar with K line and L line communication on the 993? In the shop we have a 1997 Cabriolet that was brought in for a horn support. Very common problem right? During the course of the repair I tested the horn with the airbag off just to verify function. Of course this set the airbag light which I knew would happen so I plugged in the PST 2 to clear it. To my surprise I could not communicate with the airbag module upon further investigation I found I could not communicate with any module in the car. Of course the car has Drive block and no matter what I do with Drive Blok it does not seem to matter I still cannot communicate. So I have no communication to DME,climate contro, abs, or airbag. At the OBD2 connector pen1 is voltage and pin 16 is voltage 10 four and five are ground and pin 7 is the K line pin 15 is the L line. Power and ground are present on the associated pins where it should be. Some wiring checks have been done on the K like and L line circuits and no problems have been detected yet we still have no communication. All I want to do is reset the airbag light. And the airbag module only has K line communication going to pin 9 of the airbag module. I have isolated the K line wire and substituted my own K line wire with a fabricated obd2 harness to allow me to bypass the car's wiring and go straight to the airbag module K line but still no communication. Other than pin 9 the rest of the vehicle harness is still plugged into the airbag module. If anyone here is familiar with scan tool communication requirements and K line communication requirements on a 993 please help. Thanks, Danny
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