closed loop Idle control

[inline6]

i am trying to get my head around how the ECU "knows" to start closed loop idle.

is there a TPS and rpm threshold that once the engine goes below a certain TPS say 1% and certain rpm say 1200rpm that the ECU starts to activate closed loop? i'm not seeing where these are specified in ESP

ill be using a 3wire BAC if it matters

cheers

[HaltechMatthew]

If you meet the Zero Demand conditions, you are below the speed threshold, and the rpm is less than the Decel Min RPM then you are at idle.

[inline6]

ok thanks, its just a matter of learning the different terminology then