I just took a picture of the heated 02 sensor test information for a grand Vitara, it might give you an idea of what to look for, for your vehicle.
It lists the color of the wires that you would need to find in the engine harness,
and shows their positions in the connector to the ECM.
This is for a GV, you will need to find the FSM for your car.
On my GV, the wires came out of the engine harness near the wires going to the Throttle body. It would probably be a good place to start unwrapping and looking for the cut off wires.
Wire colors are listed as R, GR/Y, R/BL as an example.
I am not saying those are the colors of yours.
I only mentioned them so you will know what to look for in your FSM.