3. ENABLE CONDITION
Rich -> lean diagnosis response
4. GENERAL DRIVING CYCLE
Perform diagnosis once during deceleration fuel cut from a constant and high speed driving, when rear oxygen sensor is warmed up
sufficiently. (Pay attention to the oxygen sensor voltage for the timing of the deceleration.)
5. DIAGNOSTIC METHOD
- Intermediate
When the oxygen sensor output voltage changes from 0.55 V (rich) to 0.15 V (lean), calculate the minimum response time for output
change between 0.5 V and 0.2 V for the judgment criteria.
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