ENG. Speed Does Not Return to Idle (Light Braking D4->D3)

Engine Speed Does Not Return To Idle (Light Braking D4 -> D3)





1: CHECK SELF-DIAGNOSTIC RESULTS





2: CHECK THROTTLE POSITION SENSOR





3: CHECK A/T FLUID CONDITION





4: DETECT MALFUNCTIONING ITEM





5: CHECK SYMPTOM





6: DETECT MALFUNCTIONING ITEM

SYMPTOM:
- Engine speed does not smoothly return to idle when A/T shifts from D(4) to D(3).
- Vehicle does not decelerate by engine brake when turning overdrive control switch OFF.
- Vehicle does not decelerate by engine brake when shifting A/T from D to 2 position.