Oxygen Sensor Diagnosis

Diagnose the fuel control Oxygen Sensors (O2S) for the following conditions:
^ Slow response
^ 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 Heated Oxygen Sensors (HO2S) for the following functions:
^ Heater performance - time to activity on cold start
^ Signal fixed low during steady state conditions or power enrichment - hard acceleration when a rich mixture should be indicated
^ Signal fixed high during steady state conditions or decel fuel mode - deceleration when a lean mixture should be indicated
^ Inactive sensor - output steady at approximately 438 mV