What should I do if the Innova 5610 fails to establish communication with the vehicle's computer?

If a communication error message displays, ensure your vehicle is OBD2 compliant and verify the connection at the DLC is secure with the ignition on. Turn the ignition off, wait 5 seconds, then turn it back on to reset the computer. Select 'Relink' to try again. If the Scan Tool cannot link after three attempts, a 'Contact Technical Support' message displays—turn off the ignition, disconnect the tool, and contact technical support for assistance.