Idle reset puzzle

[broken]

The thing I find puzzling about doing an idle reset on a 1999 Lanos SE, is after the turning on and off the ignition a couple of times for 5 secs, it then says to turn on your A/C ........ its this part I find puzzling? do you also turn on the fan with the A/C switch?...or do you just turn on the A/C switch without the fan?... My understanding of the A/C is just pushing the A/C switch on hasnt engaged the A/C untill the fan control is turned on.

PS. This is from Lanos Manual

Turn the ignition ON for 5 seconds.
Turn the ignition OFF for 10 seconds.
Turn the ignition ON for 5 seconds.
Start the engine in park/neutral.
Allow the engine to run until the engine coolant is above 185° F (85°C ).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
Turn the ignition OFF. The idle learn procedure is complete.

[Daniel]

My understanding of the A/C is just pushing the A/C switch on hasnt engaged the A/C untill the fan control is turned on.

That's correct. A/C can only be ON (green light) if ventilation is ON too.
There is also a additional step between first A/C OFF and second A/C ON for auto transmission: brake pedal applied set transaxle in drive (D).

Daniel

[buddha102]

so do i have to do it when i clean the throttle position sensor ? what are the consequences? (wrong idle, hight rpm idle?)

[Daniel]

How do you clean the throttle position sensor ? Is that not a sealed potentiometer?

Daniel

[MMamdouh]

it is not cleanable... i fouled mine trying to clean it with WD40 before

MMamdouh

[buddha102]

ive cleaned my with wd40 and its good....

still works

[Daniel]

ive cleaned my with wd40 and its good....

still works

throttle position sensor or IAC valve?

[buddha102]

tps