Before ordering a Limitless cable specifically for ACD bleeding, I wanted to check if this feature worked. Searching through the forums hasn't helped to answer.

 

ACD or AYC - are they the same controller? I know most of us don't have AYC.

 

I believe it is the same ECU, one fluid reservoir in the trunk, two hydraulic systems - one for ACD, one for AYC with their own pumps, solenoids, bleed points etc. My 6MT 4th gear has lost a tooth so the box needs swapping, this will result in the ACD needing to be re-bled.

So maybe I should ask if anyone has had success on a US 8 or 9 bleeding their ACD using Evoscan and a Limitless cable...

 

i read somewhere on the forums that you can bleed the ACD by turning the key to "on" without the car started and it will pump the solenoid for 5 seconds. You need two people to do this however.

The USDM cars have the reservoir in the front since we have no AYC. It is in the place of the FMIC sprayer bottle.

 

yep John I had it working
evoscan does connect to the ecu and reads the data
and the actuators do drive the pump you will manually have to bleed the fluid from the AYC diff itself if ya need any help pm myself or Todd-w
the only difference between the limitless cables and the tatrix ones are that pin 9 on the limitless cables are disconnected
you could use your tatrix and remove pin 9 from the back of the obdII plug just to test it

 

It hasn't worked for me yet, at least I can't say that anything seems to happen.

I'm just trying to do a proper 30k Mile fluid check, not actually bleed the system.

I have a proper cable with pin9 removed and evoscan v2.5... none of the ACD or ABS logging or actuator features seem to work. Specifically for the ACD bleeding I've tried to do it with the key in the on position and the car off (to check the fluid level) and got nothing. Sat on the ground near the pump and resevoir and still can't hear anything...

 

https://www.evolutionm.net/forums/ec...pinouts-3.html

BarryC, tried the above with no success. This is why I wanted to be sure that the Limitless cable works (ideally for ACD for Evo 8MR and 9), as I don't want to buy something that won't work.

 

I have contacted hamish he hopefully will reply
as its better for him to explain how this works as if I remember it was an evo 6 I tested it on

 

disconnect pin 9 on the obdII side check continuity between pin 1 and 15 on the cable
if there is no continuity check continuity between pin 1 and pin 4 or 5
if there is continuity remove pin 1 and put it into pin 15 on the obdII side this is the L line for the ayc ecu
this should work
the new limitless cables have this done internally
but as I said probably best to test it out first as it was an earlier model it worked on for me

 

also remember when you switch on the ign it starts the ayc hydraulic pump so sometimes hitting the pump button in actuators does nothing as the pressure is already there its only when ya go to bleed the fluid that hitting the actuator button actually repressurises the system
but you should be able to connect and log the ecu

 

Putting the key-ignition in position 2 and flooring the throttle, does that not start the pump?

 

yep something like that problem is if you want to bleed the ayc you have to keep repeating that process also its not so easy to bleed both sides left and right like that you have to also turn the steering wheel fully left or right if I remember

 

Doesn't operate the solenoid though, Fastedd found that if you get the wheels off the ground and have it in gear at 2000-3000 RPM with throttle blips it fires out much faster, and seems to have successfully bled the system this way. He also did similar with the AYC turning the wheel to lock on either side and bleeding the opposite side.

BarryC, I think all that has been tried without success on an Evo 8/9 and Tactrix cable. I'll think through the connections you mentioned, as I think functionally that is what I also tried.

 

ok John let me know how ya get on I will pass the info to hamish if it does'nt work
maybe the later ayc ecu is a bit different
but he got the code and sequences from a MUTIII tool so it should be able to do the job

 

If it is just the case of the right cable and we know if works on JDM/UK 8/9 then I'll just order it rather than reinventing the wheel, but do we know if it does?