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Abs And 4wd Light On.

Topaz

By Topaz,
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Topaz Grand Master

Topaz

Posted
Posted

Today I started my car and both my ABS and 4WD light stayed on while driving. I got fuel, restarted the car and they were both still on. I can only assume something has happened in the past few days for this to happen... what are the normal symptoms of this?

Also, I can hear an intermittent friction sound coming from the front left of the car, as I speed up it gets faster. Its nothing to do with the pads being to close to the discs I don't think... could this be an ABS problem noise?

Recent work done to the car included a HICAS lock bar and new clutch.

any help appreciated

Tom

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adam-__- Grand Master

adam-__-

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Try checking over all your fluid levels. The warning light can come up if your brake fluid is low. Don't forget to check the fluid in the boot aswell.

Bit obvious stuff to check, but you never know. Goodluck

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Duncan Grand Master

Duncan

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when the 4wd light is on the attessa computer in the boot will be flashing an error code - go and check how many times it is flashing against the list in the 32 gtr workshop manual. If it is related to the abs sensor it will show that error #

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Topaz Grand Master

Topaz

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I found a thread on here about the same type of issues...

forgot to mention I have 1994 R33 GTS4,

One thing I noticed is once the 4WD and ABS led flashes the SLIP led doesnt work anymore, normally it flashes when the rear wheels loos control or slips. which means it has switched back to RWD from 4WD.mmmmmmm, No I dont know why ABS led allways cometogether with 4WD??????

Maybe a electrical problem..................

Sounds like you rear ABS sensor/s are faulty or damaged.

Both ABS and ATTESSA systems use the ABS sensors to determine slip/skiding/etc.

I think it might be the G sensor or ABS sensor for me.... How much is a new G-sensor?

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Duncan Grand Master

Duncan

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you don't want to know lol

error 16 is lateral g sensor so at least it is nice and specific.

Start with the g sensor unit itself, it has a small window on the front that goes red if the sensor is screwed.

much more likely it is just a wiring issue though.

there are 2 plugs on the g sensor, one 4 pin, one 6 pin, you need the 6 pin. I don't have the colours in front of me but in at the bottom of that plug (the 3 wires), centre is earth, one is 8v in and the other is signal out. Make sure you have power at one of the outside wires. More details on CH66 onwards in the gtr service manual its worthi finding a copy

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Topaz Grand Master

Topaz

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I removed both of the plugs connected to the Gravity sensor and plugged them back in, no wires are broken or disconnected or loose and the 4WD and ABS lights are still on. I am stumped with this one :)

Where are the speed sensors ali? How many are there? I am assuming this is different to the G sensors?!

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ali-turko Grand Master

ali-turko

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there are 4 of them one for each wheel, im not sure where they all are, but i no there one close to the alernator, thats the one that wasnt plugedd in my car,

i am 100% certain that one speed sensors are f*ked or not pluged in i had the same problem

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