ACIS help - indentification, operation and testing ?

markoneswift · Post by **markoneswift** » Sun Jun 23, 2013 5:14 pm

Hi all, there's a lot of info about ACIS on the net I'll admit that but could someone please give me a quick overview of the system ? I think I have it on my Cynos B with the 5E-FHE engine - I've uploaded a pic, does tihs confirm I have ACIS ? How can I test the ACIS to see if it operates correctly - is it possible to observe the mechanism working if the throttle is operated by hand ? Are there any common faults that occur with ACIS and how easy are they to resolve ??

Thanks everyone ! Pic below :-)

Toyota ACIS ? by markoneswift, on Flickr

siren676 · Post by **siren676** » Sun Jun 23, 2013 6:28 pm

Yes that is the acis actuator, when the engine gets to a certain rpm(cant remember exactly as mines disabled/broken :lol:

) a solenoid will allow air to the actuator which will push that lever and open the 2nd runners.
It should work while stationary.
I know the plastic nipple that the vacuum line goes to is sometimes brittle and can break off like mine has.

If you are a bit confused i can try draw something in paint :lol:

DexGT · Post by **DexGT** » Sun Jun 23, 2013 6:32 pm

That looks like an ACIS actuator. if you look at it with the car off to see where the arm is then start the car it should move to a position 90 deg from off position.

markoneswift · Post by **markoneswift** » Sun Jun 23, 2013 7:09 pm

Thanks guys - excellent info to get me started with. I will observe the arm with the motor off and then compare to when it's running. There's a video on Youtube of the ACIS actuator operating so I'll see if I can see mine move when the revs get high enough ( somewhere around 4000 I think ? )
Cheers