Immobiliser System Coil Tester

The Immobiliser Coil Tester is a simple tool to check the immobilser aerial (coil) around the ignition for communication with the immobiliser.
Locate the devise over the aerial and insert the transponder key. If the light is on the aerial is communicating with the immobiliser, if the light is off there is no communication.
If the light is on but the vehicle won't start there could be a fault with the transponder chip.