P2444

DTC P2444 SECONDARY AIR INJECTION SYSTEM PUMP STUCK ON

1. OUTLINE OF DIAGNOSIS
Detect functional errors (continually ON) of the secondary air pump.
When the secondary air supply piping pressure is high in comparison to the atmospheric pressure, it is judged as NG.




2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD
When the secondary air pump is OFF, the secondary air supply pipe pressure should be atmospheric pressure. If it is higher than atmospheric pressure, judge as NG.







Abnormality Judgment
Judge as NG if the continuous time with all of the following conditions established is more than 5 seconds.




Normality Judgment
Judge as OK if the continuous time with all of the following conditions established is more than 5 seconds, and clear the NG.

5. DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" is performed

6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

7. FAIL SAFE
None

8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)