Throttle Body Diagnostics | Test & Fix P0122 Throttle Position Sensor 1 Signal Circuit Low Input

In this video I show you how I test the throttle body when there is P0122 Throttle Position Sensor 1 Signal Circuit Low Input fault code. I explain the throttle body wiring diagram and all wires one by one. I show you how to test the throttle body and throttle position sensors by reading the live data on scan tool. Then I explain how to test the TPS output signal using multimeter and how to find and test the wire on ECM connector too.