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M35 Atessa Pump Replacement

BezerkR32

By BezerkR32,
in Four Door Family & Wagoneers

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Sunkist Grand Master

Sunkist

Posted
Posted

hi guys, just replaced the atessa pump and was wondering what fluid is recommended. i know you can run atf style fluids but wanted to know what nissan specifies

as it is $5000 worth of pump.

Nulon ATF(fully synth reccomended)

Nissan Matic J(semi synth - will work fine but above is better)

BezerkR32 Veteran

BezerkR32

Posted
  • Author
Posted

ok guys, having some issues bleeding the system. have gravity bled down to the bleeder at the pump, i then power the pump up and try to bleed at the box

but not getting any pressure there. Is there a better way to do this?

scotty nm35 Grand Master

scotty nm35

Posted
Posted

You need to take it to Nissan and get them to switch the pump and Attessa on with the Consult 3 to bleed it properly. This should be able to be done manually by hooking up 12v directly to the pump and solenoid but no-one has had the courage to try yet. I have the wiring diags here but they are in Japanese...

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

ok guys, having some issues bleeding the system. have gravity bled down to the bleeder at the pump, i then power the pump up and try to bleed at the box

but not getting any pressure there. Is there a better way to do this?

When you say you power the pump up you mean you have the motor running? There is supposed to be a manual switch in fron to the driver's legs - will try to find the reference,

Here is one:

http://sites.google.com/site/tyndago/gt-rbleedingattesasystem

Can this be the same switch that people are using to run in 2wd?

Duncan Grand Master

Duncan

Posted
Posted

still not sure if m35 is the same as r32/r33/r34, but if it is, there is a second bleeder near the driveshaft/subframe as well as the gearbox.....try that one first you might have an airlock

Angus Smart Grand Master

Angus Smart

Posted
Posted

Yew should be a pump somewhere around the drivers side on the rear subframe. and on the back of the box.

that plug near the consult plug you short it out to ground?? the pump runs, (confirm with craig) do the pump bleed first, then move on to the rear of the box and do that bleed. then make sure the reservoir is up to the full line with no gap between..

or just pull the abs plug and f**k the 4wd all together :)

BezerkR32 Veteran

BezerkR32

Posted
  • Author
Posted

i think you just disconnect the plug and the pump runs.....could be wrong. anyway it doesnt in my car atm.

i powered up the pump and solenoid manually and bled the system, now have to see why the pump isnt being activated.

anyone have a wiring diagram of the atessa system?

Jetwreck Grand Master

Jetwreck

Posted
Posted

i think you just disconnect the plug and the pump runs.....could be wrong. anyway it doesnt in my car atm.

i powered up the pump and solenoid manually and bled the system, now have to see why the pump isnt being activated.

anyone have a wiring diagram of the atessa system?

I bleed mine the other day.....all goodthumbsup.gif

As far as wiring goes you might find what you want in here. http://www.m35stagea.info/forum/viewtopic.php?f=2&t=43

The Engine control and ECU pinouts are translated....they might give you a small heads up....Have you had it plugged into a Consult yet?

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