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Intermittant 4wd & A-lsd Check Light In Gtr34 V-spec

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GTR34-Vspec Apprentice

GTR34-Vspec

Posted
Posted

Hi all,

After reading most of your nice advices about the 4wd check light problems in the gtr32s to help to solve mine (gtr34 v-spec), unlucky nothing seems nere. Here is the problem that I've been noticing:

Usuallly, when it's cool (ambient temperature/left overnight), it ocurred less often. Sometimes, just started the engine for awhile, the 4WD and A-LSD check light came on at the same time either on stationay (while idling) or rolling on a constant speed. Tried to turn the engine off/on, the check lights went off and came back on after awhile. How come, these two check lights came on together??

I've checked the fuses in the egine bay + driver's kick panel, fluid level, the relay to the fluid pump motor. They are all fine. One thing I haven't checked is the pump motor cause I wasn't sure how to.

I had an advice that, have a ATTESA computer diagnostic test, but I'd love to sort the problem out with your advices if it's possible before bring the car to a mechanic.

So please advice me how to solve this problem, THANKS GUYS !!!

Duncan Grand Master

Duncan

Posted
Posted

well I've not had a look at the 34 computer, have a look at it (in the boot under the parcel shelf). when the 4wd light is on there will be an LED flashign a code number. Check the code number to the list of error messages in the 32 GTR workshop manual.

All on the assumption it works the same as a 32, my guess is the computer will still show error codes to help with problems like this.

All the other solutions like fluid, bleeding etc won't really help if the 4wd light is on. Most likely cause is a poor earth / bad voltage somewhere for intermittent problems like this.

GTR34-Vspec Apprentice

GTR34-Vspec

Posted
  • Author
Posted

Thanks Duncan,

I think you're right about the wirings. Yesterday, when it was in good condition, I tried to shake the wire loom near the pump => the check light poped up => turn off the engine => shake again => turn on => check light was gone. So, very high chance it's somewhere there. I'll strip it down on the weekend and I'll update to you later.

Cheers!!!

GTR34-Vspec Apprentice

GTR34-Vspec

Posted
  • Author
Posted

Hey guys !!

I've found where the intermittant bastard is !!! The water and corrosion contaminated on the connector of the fluid pump side. The voltage got leaked and shorted intermittantly caused the 4wd and

a-lsd check light came up. Just disassemble the connectors to clean the corrosion => DONE => THE GOZILLA IS HEALTHY AGAIN !!!

CHEERS!!!

  • 3 years later...
Nosure Proficient

Nosure

Posted
Posted
Hey guys !!

I've found where the intermittant bastard is !!! The water and corrosion contaminated on the connector of the fluid pump side. The voltage got leaked and shorted intermittantly caused the 4wd and

a-lsd check light came up. Just disassemble the connectors to clean the corrosion => DONE => THE GOZILLA IS HEALTHY AGAIN !!!

CHEERS!!!

Hi mate I got a same problem as you. can you point out where is the connector??? front?? in the boot??

Duncan Grand Master

Duncan

Posted
Posted

you don't really want to know....there are orange and grey connectors on top of the attessa pump. which is on top of the diff. don't think you will have much luck getting to it without dropping the subframe.

Nosure Proficient

Nosure

Posted
Posted
you don't really want to know....there are orange and grey connectors on top of the attessa pump. which is on top of the diff. don't think you will have much luck getting to it without dropping the subframe.

thanks mate, so how long it will take if let workshop do it?

Nosure Proficient

Nosure

Posted
Posted
you don't really want to know....there are orange and grey connectors on top of the attessa pump. which is on top of the diff. don't think you will have much luck getting to it without dropping the subframe.

I found the pump is just under the right rear of the car i clean and replug it. the light not come up for 15kms so far. so maybe fixed.

Duncan Grand Master

Duncan

Posted
Posted

sorry not sure how long it would take a workshop with a hoist.....would take me an hour to drop the subframe and 1/2 to raise it again but that has been on and off a few times.

definately a job to get someone else to do :D

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