Attessa Error 18 And Resivior Air Levels

[V-Spec]

i have an r32 gtr and sometimes when i start the car the 4wd light goes out then comes on in 10 sec and stays in rwd mode. i find that it will do it more when the car is warmed up and not from when i start it cold. ushally turning the car off and starting it again fixes the problem.

i have checked the computer and it reads error code 18 which is ETS pressure switch or curcut.

from reading the service manual, i have come to believe that before the car is started the attessa pump primes, then shortly after the car starts either the pressure drops or switch closes to soon and gives an error.

i am in the process of checking all the lines to make sure the clamps are done up between the pump and the resivior.

One thing i have noticed in the service manual is the resivior must have an air pocket of no greater than 5mm but mine does?

mine is more like this picture below, about 10mm but the top fluid level is sitting right on the max line. How do i remove air from this resivior????

i am also going to perform a bleed and clean up the hydroluc unit terminal plugs on the pump under the rear diff to see if that helps. Any other sugestions?

Edited December 14, 2008 by V-Spec

[Street GT-R]

I am having exactly the same problem. So, have you ever fingered it out?

Thanks!

i have an r32 gtr and sometimes when i start the car the 4wd light goes out then comes on in 10 sec and stays in rwd mode. i find that it will do it more when the car is warmed up and not from when i start it cold. ushally turning the car off and starting it again fixes the problem.

i have checked the computer and it reads error code 18 which is ETS pressure switch or curcut.

from reading the service manual, i have come to believe that before the car is started the attessa pump primes, then shortly after the car starts either the pressure drops or switch closes to soon and gives an error.

i am in the process of checking all the lines to make sure the clamps are done up between the pump and the resivior.

One thing i have noticed in the service manual is the resivior must have an air pocket of no greater than 5mm but mine does?

mine is more like this picture below, about 10mm but the top fluid level is sitting right on the max line. How do i remove air from this resivior????

i am also going to perform a bleed and clean up the hydroluc unit terminal plugs on the pump under the rear diff to see if that helps. Any other sugestions?

[CeJay]

hmm. My bubble is about 2 or 3mm but the fluid basically looks black. I take it thats not good? I will look at the gtr manual a bit more, but not sure how much of it applies to the GTS-4 AWD system. Also getting the 18 ecu error code. which is the ets pressure switch of course.

[marcellin_a]

Hi guys I have the error code 18 on my r32 gtr I have juggled between 3 units and 2 computers and no change has any one solved this issue