Time Needed for Diagnosis: 1 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
Normality Judgment
1. Regardless of a deceleration fuel cut, if the response time (diagnosis value) when the oxygen sensor voltage has changed from rich to lean
is shorter than the threshold value (judgment value), judge as a normal condition.
Response time (diagnosis value) less than or equal to Threshold value -> Normal
2. Do not judge as a normal condition.
Judge as OK and clear the NG if the following conditions are established.
Time Needed for Diagnosis: 1 time(s)
6. ENABLE CONDITION
Lean -> rich response diagnosis
7. 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.)
8. DIAGNOSTIC METHOD
When the oxygen sensor output voltage changes from 0.25 V (lean) to 0.55 V (rich), calculate the minimum response time for output change
between 0.3 V and 0.5 V for the judgment criteria.
No comments:
Post a Comment