Oxygen Sensor Diagnosis

Oxygen Sensor Diagnosis

Diagnose the fuel control heated oxygen sensors for the following conditions:

- The heater performance-the time to activity during a cold start

- A slow response

- The response time-the time to switch R/L or L/R

- The inactive signal-the output should steady at a bias voltage of approximately 450 mV

- A signal fixed high

- A signal fixed low

Diagnose the catalyst monitor heated oxygen sensors for the following functions:

- The heater performance-the time to activity during a cold start

- A signal fixed low during steady state conditions

- An inactive sensor