Problem: I’ve tried to connect my Lonsdor K518ISE to Land Rover, Ford & Audi, but they all have the same error: “Vehicle connection failed, please check the connection between the device and vehicle OBD.”
Possible reasons that may cause the issue:
1. OBD cable is broken;
2. K518 communication chip is damaged.
Test with a new OBD cable to judge if the communication chip can still work normally. To find out if the OBD cable has a problem, we need to test it.
How to test K518 OBD cable?
1. Unplug K518 Key Programmer and turn it off.
2. Connect the OBD cable(DB25 cable) to K518ISE, and switch to the diode stalls with a multimeter.
Pay attention that 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.
3. Touch the metal part(shown in pic) with a red pen.
4. Test the resistance of each pin on the K518 connector with a black pen, making sure the vehicle connector is held in the way as shown.
PIN1,8 should have no resistance;
PIN2,3,4,5,6,7,9,10,11,12,13,14,15,16 should have resistance.
Test Results
If all have no resistance, the OBD cable(DB25 cable) has a problem.
If the measurement is all as it is supposed to be, and the car(K518 supported models) still can’t be connected, you’ll need to send back the OBD cable(DB25 cable) & K518 device for Lonsdor to check.
www.obd2shop.co.uk
