Oxygen Sensor Diagnosis

DIAGNOSE THE FUEL CONTROL HEATED OXYGEN SENSORS FOR THE FOLLOWING CONDITIONS:
- Heater Performance (time to activity on cold start)
- 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 FOR THE FOLLOWING FUNCTIONS:
- Heater Performance (time to activity on cold start)
- Signal fixed low during steady state conditions.
- Inactive Sensor.