When for - Es/for CAS/for EZS/for Ez5 and other models with chips cannot start, the tester can quickly diagnose whether the lock does not start, whether it is the problem of reading , and quickly diagnose the quality within 10 seconds. Intelligent operation, no need to connect to a computer. At the same time, it is a powerful assistant for car electronic maintenance personnel and car locksmiths. Instructions for use: 1. Place the induction coil on the front of the ignition switch. 2. Pass the induction loop, insert the key into the ignition switch, turn on the key, and the induction loop work. 3. The induction loop converts the electromagnetic communication between the key chip and the anti-theft computer into a flashing LED light to let us know the working status of the chip anti-theft system. 4. A. If the induction map does not flash, it means that the anti-theft computer or coil is broken (the anti-theft computer has no signal) B. If the induction ring flashes for a long time, it