P0065

DTC P0065 - AIR ASSISTED INJECTOR CONTROL RANGE/PERFORMANCE

1. OUTLINE OF DIAGNOSIS




Detect the malfunction of AAI solenoid valve.
Intake manifold pressure (negative pressure) is constant because the throttle valve is fully closed during fuel cut at deceleration. At this time, opening AAI solenoid valve makes the intake manifold pressure larger. For AAI solenoid valve function diagnosis, judge OK or NG by the amount of change of intake manifold pressure when opening and closing the AAI solenoid valve.

Max. value with the valve open - Min. value with the valve closed less than Threshold value -> NG
Max. value with the valve open - Min. value with the valve closed greater than or equal to Threshold value -> OK




2. COMPONENT DESCRIPTION




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Conduct a serial diagnosis during fuel cut at deceleration from approx. 100 km/h (62 MPH). Be careful for vehicle speed and engine speed. (Diagnosis may not finish if the vehicle speed and engine speed conditions become out of specification.)

5. DIAGNOSTIC METHOD




Judge NG when the malfunction criteria are completed 2 times in a row. Judge OK and clear the NG if not completed once

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

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

8. FAIL SAFE
None

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