Oxygen Sensor Diagnosis

Diagnose the fuel control oxygen sensors (O2S) for the following conditions:
^ A slow response
^ The response time (time to switch R/L or L/R)
^ An inactive signal (output steady at bias voltage - approximately 450 mV)
^ The signal fixed high
^ The signal fixed low

Diagnose the Heated Oxygen Sensors (HO2S 2) for the following functions:
^ The heater performance (time to activity on cold start)
^ The signal fixed low during steady state conditions or power enrichment (hard acceleration when a rich mixture should be indicated)
^ The signal fixed high during steady state conditions or decel fuel mode (deceleration when a lean mixture should be indicated)
^ An inactive sensor (output steady at approximately 438 mV)