4Wd Light Comes On Kicks Into 2Wd :(

[Gtir-keiron]

Its random i had the system bled around 6 months ago it stoped happening now its happening all the damn time on my 33gtr.

Any one help me with this i rather drive around in 4wd i think it does damage to drive around in 2wd ya?

And im anal about my car i wont drive it unless its 100%

Any body had a problem with this and fixed it.....

The hicass light comes on sometimes but not often.

[d1_drifter]

Isn't a solid 4WD light an ATTESSA error code?

[snozzle]

if your tps voltage on idle/throttle closed is below a certain point the attessa doesnt work

i had the same problem as you till i adjusted the tps from 0.32v to 0.45volts and now attessa works everytime i start my car

could be your problem, give it a go

[bubba]

Isn't a solid 4WD light an ATTESSA error code?

Kind of, it's telling you to check diagnostics for the error code.

[DVS JEZ]

if your tps voltage on idle/throttle closed is below a certain point the attessa doesnt work

i had the same problem as you till i adjusted the tps from 0.32v to 0.45volts and now attessa works everytime i start my car

could be your problem, give it a go

yep definately check TPS voltage. adjust to .45 if need be.

also check your attessa fluid level in the boot on the drivers side, make sure its still topped up.

[Gtir-keiron]

does changing the tps volt level effect the tune of the car in any way?

[snozzle]

it didnt change anything for me besides fixing my attessa problem, just see what ur TPS is reading first, dont adjust it if your that scared to haha

do you have a power fc ?

Edited February 5, 2011 by snozzle

[Beer Baron]

check the fluid level again. most likely the same problem you had before.

[Gt-r_James]

Hey, appologies for the novcie question but how does one measure and if need be correct the TPS voltages. I recently bought an automotive multimeter to adjust the volatges of the G-sensor, I did this and it didn't prevent the 4WD and ABS lights from staying on.

Detailed descriptions, pics, or whatever would be really appreciated!

Thanks in advance

[33GTRV]

the most common issues with the atessa are the TPS voltage, the fluid level and lastly, wheel speed sensors(abs sensors) Check these and im almost positive you will find the issue. If the fluid is good, take the car into nissan and get them to do a consult check, IN FRONT OF YOU, and write down the voltages, codes ect ect. If you dont, the greasy bastards will take you for a ride, they have no fcuking idea about these cars usually and its a money making scheme for them to play dumb. If its a wheel speed sensor, it can be 1 of 2 things. The tps voltage AND/OR a faulty ABS sensor. They dont usually shit themselves so if its a sensor, try looking and it may be covered in CV grease(common) or possibly misaligned due to work bieng done in that area and it getting bumped. TPS voltage is pretty self explanatory, adjust it, if the problem comes back, replace the tps as its on the brink.

Good luck

Cheers, Allan

[GTR_JOEY]

In reguards to the tps voltage

When I have a high current draw ( ie head lights on while brake lights are on as well) my attessa drops out and I'm back to rwd

Then I have to restart the car to get it goin again

I've cleaned all the earths up which did help but I'm guessing the tps voltage drop could be an issue for me????

Edited January 1, 2012 by GTR_JOEY

[GTR_JOEY]

Anyone.....? Also how do you adjust the tps voltage

[GTSBoy]

You adjust the TPS voltage by adjusting the TPS itself. With the throttle closed, move the TPS relative to the throttle shaft until you get the desired voltage.

[GTR_JOEY]

Sweet as cheers mate,

Any one got any thoughts on my voltage drop problem?

[luke gtr]

Possible voltage reg problem?

[GTR_JOEY]

hmm possibly, i dont have the car atm as its at the tuners so cant really trial and error test it

just tryin to get ideas for why it would be doin this

[GTR_NUTZ]

I have a 32 GTR. Had a similar problem. Just needed to top up the juice in the boot. Instead of running on full I put a tad bit extra in so now it's a mm or two above the full mark.

23 and 33 GTR's are fine to drive around in rear wheel mode.

[GTR_NUTZ]

32*

[GTR_JOEY]

I have a 32 GTR. Had a similar problem. Just needed to top up the juice in the boot. Instead of running on full I put a tad bit extra in so now it's a mm or two above the full mark.

23 and 33 GTR's are fine to drive around in rear wheel mode.

what problem are u refering to? OP or mine?

[Matty Sherlock]

sometimes when I start my 32 on a weird slopey surface it triggers the 4wd and abs lights, and I have no attessa or abs. If I simply cut the ignition and start it up again on a flat surface it returns to normal. I wouldn't suggest playing around with your g-sensor unless you know what you're doing.