Abstract: A method for inspecting LED modules of a lighting device containing at least two LEDs is provided: A pair of LEDs of a module is selected, the LEDs are connected to one another optically, preferably via a light guide, one LED is connected to a power source and the other LED is connected to an electrical measuring device, the two LEDs of a pair are connected together optically via an optical waveguide, one LED is energised with a predefined current strength and the physical change produced in the other LED is measured, and then the energising and measuring at the two LEDs are swapped, and the module is identified as faulty if the measured value lies outside a definable range in at least one measurement. An ICT device for performing the method includes an ICT adapter means including at least one optical waveguide for the optical connection of the LEDs.