Ho2s Sensor 1994 Sc400

[Vandal]

Hi All

Another HO2S sensor query. My check engine code indicates the back heated oxygen sensor is reading faulty. Does anyone know how to measure the voltage from somewhere in the engine compartment?

Also, if I wanted to remove the sensor it looks as if the sensor connector is located under the carpet under the front seats. Is this correct? Can you pull the connectors out through the access port on the bottom of the car?

Thanks

dave