Oxygen Sensor Diagnosis

Diagnose the fuel control heated oxygen sensors (HO2S) for the following conditions:
^ Heater performance, heater current monitor
^ Response switches, number or switches R/L or L/R
^ Response time, time to switch R/L or L/R
^ Inactive signal, output steady at bias voltage - approximately 450 mV
^ Signal fixed high
^ Signal fixed low

Diagnose the catalyst monitor HO2S for the following functions:
^ Heater performance, heater current monitor
^ Signal fixed low
^ Signal fixed high
^ Inactive sensor