4Wd Light Comes On While Driving

[Kappacrazed]

Hey guys i bought a R32 GTS-4 last week and been having some troubles. The car came equipped with a TSC, Now if i have it in 4wd and any number on the dial i use after a couple minutes of driving the 4wd & ABS like comes on. Now if i switch it to 2wd the lights comes on automatically like they are expected to and the car drives fine but at low rpms till about 2000 rpm i can hear a whining noise almost like constant friction rub but the noise only comes while I'm accelerating. And for the couple minutes that 4wd works when i try it there is no noise at low rpm.

Now I have been reading that different size rims could cause the ATTESSA system to shut off 4wd, The rears are 17x9+24 on 225/50/17 and the fronts are not as wide (I'll get the size tomorrow) but also have 225/50/17 on them. So here is a list I have made to check tomorrow, let me know if I'm in the right direction.

1. Check battery and charge it (While driving it tonight for the first time in cold weather when i put the clutch in the revs would go from 1000 to 2000 and hold there for a couple of seconds and battery light flashed 3 times when i almost came to a complete stop then went back to normal.) The previous owner wired 3 gauges and a turbo timer to cd player 12v maybe this could be a problem.

2. Check pump fluid in the boot

3. Check front tire width

4. Drive it in 4wd till light comes on and read errors on ATTESSA

5. Disconnect TSC and try

6. Change fluid in diffs

7. The car is on cobb coilovers and i have rims cambered a bit, could ATTESSA turn awd of for this to?

If anyone has anything to add that i should try tomorrow or if any of these don't relate let me know please. The car is also running greddy emanage ultimate and has a hicas lock bar.

[Moodles2]

ATTESSA is controlled by a seperate ECU in the boot, the error code is a red light iirc that flashes, I've never actually done it myself but the error code should still be on there unless it gets wiped on engine shutdown. Since 4WD and ABS are linked to the same sensors, you could have a faulty wheel speed sensor but you won't know for sure till you get that code.

[sydking]

Erros codes are a pain to read and more then not i find not accurance, Get it hooekd up to a Nisaan consult and diagnose that way. Probly same reading but i hate craming hy head under there trying to read thoes dam flashes.

ATTESSA does need same rolling diamitor all around

[Kappacrazed]

Thanks for the replies The tank in the boot was at min to i filled it, charged battery, re wired the hacked up rear right sensor and no lights come on in 4wd now.

[sydking]

to easy then mate!