Durametric Communication Problem on K-Line 2
07-31-2016, 10:17 AM
#46
Track Day
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My durametric cable never could recognize the airbag module on my 99 C2. I ended up going to my porsche mechanic who has a PIWIS and he reset my airbag light light for 20 Euro. The airbag light has never come back. He said there was nothing wrong with my K2 line as suggested by durametric. All systems in my 996 are functioning normally.
07-31-2016, 11:24 AM
#47
Rennlist Member
I've had to delete and reinstall the program a few times, after it wouldn't initialize using my fairly new laptop with Win10, and my old laptop with older windows versions. Other than that, I've had no issues with my 99 coupe non-egas.
07-31-2016, 11:28 AM
#48
Rennlist Member
Engine and Alarm at the only 2 modules that work on my two '99s with early '98 build dates. Contacted Durametric and they acknowledged it was an issue. I've also had to reinstall the software a couple of times on win10 but have had better luck in Win8.1.
07-31-2016, 07:46 PM
#49
Advanced
I have the Durametric enthusiasts cable ,using it with an old laptop with windows XP .I haven't used the laptop for a couple years ,after doing all the updates and resetting the firewall it worked fine.I am using it on a 02 carrera,I seem to remember the instructions stated to turn the flashers on so the car won't go to "sleep" and it keeps the modules awake on the "99 models .
07-31-2016, 08:42 PM
#50
The airbag is on the second K-line, which is connected to pin 3 of the OBDII port. K-line idles high (bit "1"). When the scanner wants to send a bit "0", it pulls the K-line to ground using an unprotected transistor. If the K-line is shorted to +12v, that will kill the transistor when the scanner tries to pull that 12v to ground.
To test if pin 3 is shorted to the +12v, connect a ~500ohm resistor between pin 3 and +12v, then another 50ohm (5w or hgher) resistor between pin 3 and the ground. Now measure pin 3. If it only has ~1v, your K-line is fine. If it's still at 12v, the K-line is shorted to 12v. Be careful the 50ohm resistor will get hot if the K-lime is shorted to 12v.
To test if pin 3 is shorted to the +12v, connect a ~500ohm resistor between pin 3 and +12v, then another 50ohm (5w or hgher) resistor between pin 3 and the ground. Now measure pin 3. If it only has ~1v, your K-line is fine. If it's still at 12v, the K-line is shorted to 12v. Be careful the 50ohm resistor will get hot if the K-lime is shorted to 12v.
Assai, could you confirm:
~500ohm resistor between pin 3 and pin 16
50ohm resistor between pin 3 and pin 4
I am following this ref for pin-out:
http://www.cb-racing.com/boxster_OBDii.html
Because I was worry to do something wrong (not sure about pin 16), I did that only:
- Test pin 3(K line 2) and pin 4(ground) ~ 11,5V
- Test pin 7(K line 1) and pin 4(ground) ~ 7 V (This line works fine because I can read it with a cheap ODB2 reader) I just wanted to confirm the value and according what I read here:
http://www.ross-tech.com/vag-com/aftermarket-radio.html
- After connect the 50ohm resistor between pin 3 and pin 4 I got ~< 1V (some mV)
- 50ohm resistor stayed cool. (not hot at all)
Of course everything ingestion ON (when OFF nothing on pin 3)
Then I reconnect the radio to see if I have deferents values. All the same.
I checked the wires only 3 cable are connected to the radio and the car (red, brown and yellow). Others are for speaker and antenna, then my guess is I have few chance that the radio cause issue if not connected on the K-Line... anyway I am not sure.
Then last test will be with the ~500ohm resistor, Assai, could you confirm my previous for pin 16?
Thank you!
07-31-2016, 09:22 PM
#51
Yes, those pins are ok too. Your measurement confirms your pin 3 is NOT shorted to the +12v. If you connect the 500ohm resistor too, you can confirm the line is not shorted to the ground either if it measures about 1v.
Hi guys,
Assai, could you confirm:
~500ohm resistor between pin 3 and pin 16
50ohm resistor between pin 3 and pin 4
I am following this ref for pin-out:
http://www.cb-racing.com/boxster_OBDii.html
Because I was worry to do something wrong (not sure about pin 16), I did that only:
- Test pin 3(K line 2) and pin 4(ground) ~ 11,5V
- Test pin 7(K line 1) and pin 4(ground) ~ 7 V (This line works fine because I can read it with a cheap ODB2 reader) I just wanted to confirm the value and according what I read here:
http://www.ross-tech.com/vag-com/aftermarket-radio.html
- After connect the 50ohm resistor between pin 3 and pin 4 I got ~< 1V (some mV)
- 50ohm resistor stayed cool. (not hot at all)
Of course everything ingestion ON (when OFF nothing on pin 3)
Then I reconnect the radio to see if I have deferents values. All the same.
I checked the wires only 3 cable are connected to the radio and the car (red, brown and yellow). Others are for speaker and antenna, then my guess is I have few chance that the radio cause issue if not connected on the K-Line... anyway I am not sure.
Then last test will be with the ~500ohm resistor, Assai, could you confirm my previous for pin 16?
Thank you!
Assai, could you confirm:
~500ohm resistor between pin 3 and pin 16
50ohm resistor between pin 3 and pin 4
I am following this ref for pin-out:
http://www.cb-racing.com/boxster_OBDii.html
Because I was worry to do something wrong (not sure about pin 16), I did that only:
- Test pin 3(K line 2) and pin 4(ground) ~ 11,5V
- Test pin 7(K line 1) and pin 4(ground) ~ 7 V (This line works fine because I can read it with a cheap ODB2 reader) I just wanted to confirm the value and according what I read here:
http://www.ross-tech.com/vag-com/aftermarket-radio.html
- After connect the 50ohm resistor between pin 3 and pin 4 I got ~< 1V (some mV)
- 50ohm resistor stayed cool. (not hot at all)
Of course everything ingestion ON (when OFF nothing on pin 3)
Then I reconnect the radio to see if I have deferents values. All the same.
I checked the wires only 3 cable are connected to the radio and the car (red, brown and yellow). Others are for speaker and antenna, then my guess is I have few chance that the radio cause issue if not connected on the K-Line... anyway I am not sure.
Then last test will be with the ~500ohm resistor, Assai, could you confirm my previous for pin 16?
Thank you!
07-31-2016, 11:02 PM
#52
- Ignition OFF.
- Radio connected.
- With 2 resistors connected:
~500ohm resistor between pin 3 and pin 16
50ohm resistor between pin 3 and pin 4
- I have 1v between pin 3 and pin 4. No resistors became hot.
Then that concludes your test, Ahsai, and I don't have short-circuit on K line 2.
Not sure I have to do the test ignition ON. But looks like my line is OK.
Then, my mechanic probably don't have the good cable to read my old 986... despite what he told me...
Then, I will have to find a way to have good cable or go to the dealer.
Thank you Ahsai again for this exercise, I hope my notes could be useful for someone else too.
I will let you know when I will solve my air-bag light issue... and how...
Yann
07-31-2016, 11:52 PM
#53
Looks like your pin 3 K-line is fine so it must be the cable. Durametric is KNOWN not to be able to communicate with that K-line on some earlier models. It's a well known issue.
08-02-2016, 10:56 AM
#55
Burning Brakes
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Fronkenstein
08-03-2016, 12:38 AM
#57
Rennlist Member
08-03-2016, 11:26 PM
#59
Rennlist Member
See page 4... http://986forum.com/forums/general-d...t-connect.html
A. Trying to depress us further
B. Pointing out the Autel
C. Trying to depress us further.
08-04-2016, 12:48 AM
#60
Update: the problem was the Gen 2 cable not working with some '99's. 
After a couple months of back and forth with Durametric, I finally got them to send me some weird hybrid cable. It looks like a Gen 1 cable (using their identification method), but works with version 6 software.
I'm now able to access all modules
Airbag light off, cluster OBC activated...I'm pretty happy.
I really appreciate Durametric's help with this, but I wish they hadn't pretended to not know about the '99 issue for so long. If anyone else has trouble with the cable connecting to the earlier models, it is a known issue for them...don't get yanked around for 2 months testing K lines.
After a couple months of back and forth with Durametric, I finally got them to send me some weird hybrid cable. It looks like a Gen 1 cable (using their identification method), but works with version 6 software.
I'm now able to access all modules
Airbag light off, cluster OBC activated...I'm pretty happy.
I really appreciate Durametric's help with this, but I wish they hadn't pretended to not know about the '99 issue for so long. If anyone else has trouble with the cable connecting to the earlier models, it is a known issue for them...don't get yanked around for 2 months testing K lines.
Last edited by kderry; 08-04-2016 at 01:14 AM.