The Bosch VET 100 Circuit Analysis Tool is perfect for data stream analysis using your scan tool. With quick and easy setup, you can identify faulty sensors, wiring harnesses, and/or issues with PCMs as the next step after code/ no code scan tool diagnostics. The tool helps troubleshooting accuracy by pinpointing circuit diagnostic component failure. Product Features: Save time and quickly identify failed circuit component, wiring harness or ECM, use with any scan tool during data stream analysis, simulates the sensor you are diagnosing by inputting a determined voltage at the sensor location, allows input voltage from .5VDC - 7VDC in .5VDC increments. With scan tool, verify if correct voltage is being applied to circuit. Bypass sensor to send desired voltage back to PCM