Jump to content
SAU Community

Recommended Posts

Hello, I have a BCNR33 and the car is not pulling all 4 wheels. The rear left tire seems to be the only one making power. I checked and my Attesa pump is not coming on and I checked for power to the pump and there isn't any. I checked fuses and I need a wiring diagram of which relays run the system. I replace the relay that's in the trunk (boot) and no change. I also had a leaking pressure switch on the pump so I spliced in another one. If anyone have any ideas of why the pump isn't getting power please share inputs. 20180209_205017.jpg

Link to comment
https://www.sau.com.au/forums/topic/473312-95-r33-v-spec-attesa-problem/
Share on other sites

If as per your heading you have a V spec then the rear LSD is computer controlled so if its single wheeling you need to fix that first. I believe the V spec attessa control is different as well but don't know much about the V spec. Again you may be able to extract fault codes from the relevant ecus.

  • Like 1
If as per your heading you have a V spec then the rear LSD is computer controlled so if its single wheeling you need to fix that first. I believe the V spec attessa control is different as well but don't know much about the V spec. Again you may be able to extract fault codes from the relevant ecus.
Yes it's different. I don't know if power is even at the ECU. I would like to see a diagram of the system if anyone has it by any chance. Yes the pump and ECU controls the torque split between the wheels. Thanks for the input brother
You need a Consult scan tool or equivalent first.  Codes can tell you a lot.  Not finding the ATTESA computer on the network at all is diagnostic in itself!
True..I might have to run to Nissan which I'm sure they would have one

Problem solved... It was the pressure switch. My buddy and I swapped ECU, Attesa relay, checked each other's fuses, made sure things were getting power and I ground a wire and it came on. So I knew then the system wasn't dead [emoji879]️. So I had a pressure switch that I spliced in from another pump and wallah she came on. The pressure switch is not meant to be separated from the pump but I made it happen.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...