P1497
DTC P1497 - EGR SOLENOID VALVE SIGNAL #3 CIRCUIT MALFUNCTION (HIGH INPUT)OUTLINE OF DIAGNOSIS
- Detect the open/short circuit of EGR.
- Judge NG when ECM output level is different from actual terminal level.
COMPONENT DESCRIPTION
ENABLE CONDITION
GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
DIAGNOSTIC METHOD
- Abnormality Judgment
Judge NG when the cumulative time until completing the malfunction criteria becomes more than time needed for diagnosis.
- Normality Judgment
Judge OK and clear the NG when the malfunction criteria are not completed.
DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" was performed
MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed
FAIL SAFE
None
ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)