How to solve Lonsdor K518ISE can’t access to any testable car model?

If the Lonsdor K518ISE can’t access to any testable car model, the OBD cable should be the main reason after testing again and again by the Lonsdor engineer.


Here is the method to test the OBD cable (Verified working great):

  1. Unplug the K518ISE main unit and turn it off


  1. Connect the DB25 cable(OBD cable) to k518ISE main unitusing amultimeter and switch to the diode stalls.




Note: there are 3 connectors on the OBD cable:

Connector 1: connect K518ISE OBD port;

Connector 2: connect KPROG adaptor

Connector 3: connect the vehicle OBD port


Pic: 3 connectors on OBD cable


  1. 3. Use the red pen to touch the metal part(as shown in pic 2 in red)


Pic: Metal part on K518ISE OBD port


  1. Use the black pen to test the resistance of each pin of the vehicle

connector (As shown in pic 3) , make sure that you hold the vehicle connector

in the way just as the pic shows:


Pic : 16 pins on the vehicle OBD connector


PIN 1 and 8 should have no resistance; PIN2,3,4,5,6,7,9,10,11,12,13,14,15,16 should have resistance.

If all pins have no resistance, the problem should be the DB25 cable.

If all pins are tested ok but the machine still can’t access to any supported car model, then you can ship back the machine, adapters and DB25 cable for testing.

Good luck.


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