P0638

DTC P0638 THROTTLE ACTUATOR CONTROL RANGE/PERFORMANCE(BANK 1)

1. OUTLINE OF DIAGNOSIS
Judge NG when the target opening angle and actual opening angle is mismatched or the current to motor is more than specified duty for specified time continuously.




2. COMPONENT DESCRIPTION




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously when the electronic throttle control is operating.




5. DIAGNOSTIC METHOD
Judge OK and clear NG when the malfunction criteria below are completed.




Details of Judgment




Details of Judgment (Always 1,000 milliseconds when the actual opening angle d target opening angle)
Malfunction Indicator Light Illumination: Illuminates as soon as malfunction occurs.

6. DTC CLEAR CONDITION
^ When the OK idling cycle was completed 40 times in a row
^ When "Clear Memory" was performed (Only with engine stopped ped)

7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
^ When the OK driving cycle was completed 3 times in a row
^ When "Clear Memory" was performed (Only with engine stoppedped)

8. FAIL SAFE
Stop the current to electronic throttle control motor. (Fix the throttle opening angle to 6 degrees.)

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