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My HICAS light turns on when long driving.

4bella

By 4bella,
in Engines & Forced Induction

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4bella Collaborator

4bella

Posted
Posted

Hey guys, i have a r32 1992 gts-t and my HICAS light turns on everytime im on the freeway and after travelling for 20 mins straight on the freeway my HICAS light always turns on. When i have stopped driving and turned off the car and then turn it on again the HICAS light is off again. But when i drive on the freeway for 20 mins or so straight it turns right back on again. But when im just driving around the neighbourhood where im stopping n going it never turns on. You guys know why its doing this? Thanks

performance-wise Grand Master

performance-wise

Posted
Posted

Hey mate,

I dont know much about HICAS but here is a bit of info regarding the warning light from my R33 handbook manual;

HICAS WARNING LIGHT

This light will normally show for a few seconds when the ignition is first turned to the ON position and then go out. Should this light remain on , or appear while driving, it may indicate that there is a fault in the SUPER HICAS Electronic control system. In this situation, normal suspension will resume.

I am not 100% sure but I think that you may have to replace the HICAS computer, which I think is located under your parcel tray??

Or you could get a HICAS lock.

Hope this is usefull.

:D

nedb Proficient

nedb

Posted
Posted

4bella - i got the same problem, well mine is a bit worse. sometimes the rear end starts turning as i'm going straigh so it feels like drifting and then the light comes on and it becomes normal. this is only sometimes. so now i'm driving with the unplugged comp and no problems. :rolleyes:))

i've been looking at it for a while now and no success as yet to fix it.

thanx again for the help today.

MacGuyver Mentor

MacGuyver

Posted
Posted

I have that problem also: after long drives the light comes on and goes off after I turn the car off. I noticed the problem first started happening when I installed my MOMO steeing wheel but I also got a HKB boss kit that is suited for HICAS cars. In anycase when the light comes on I don't notice any handling dramas.

"If it's brown, drink it down. If it's black send it back"

GTR V Enthusiast

GTR V

Posted
Posted
I have that problem also: after long drives the light comes on and goes off after I turn the car off. I noticed the problem first started happening when I installed my MOMO steeing wheel but I also got a HKB boss kit that is suited for HICAS cars. In anycase when the light comes on I don't notice any handling dramas.

"If it's brown, drink it down. If it's black send it back"

You have got the wrong boss kit.

The boss will have 2 rectangular holes which should match up with 2 locators on the ring at the top of the steering column which is part of your hicas sensor.

This ring is attached to the top of the steering column by 4 screws.

At the 6 o'clock position of the ring there should be a small window which aligns up with the actual sensor in behind the ring. If the window does not line up the hicas will fail. This does not happen until the car is going in a straght line for some distance and then the sensor thinks the car is turning and goes into fail mode and your light will come on. Hope this of some help to you.

If you want me to explain it any further send me an email to [email protected]

makaveli Mentor

makaveli

Posted
Posted

I have had the exact same problem,

The HICAS can do this for a number of reasons:

- Not enough power steering fluid

- Wrong Boss Kit

- It may be stuffed

- Need a wheel alignment

Although to my knowledge the most common of all is that the sensor is not set in the hole in the boss kit, or it is in the hole and it just needs to be secured.

2LV8ETR Mentor

2LV8ETR

Posted
Posted

There's another reason...

The HICAS positioning sensor behind the steering wheel requires constant input to inform the computer of the steering wheel position. When you turn the steering wheel, the sensor moves with the steering wheel and informs the computer of the front wheel's are turning. The computer then turns the rear wheels according to the angle of the front wheels, and the speed of the vehicle at the time of the turn.

The main problem with freeways is that they don't contain sharp turns, but the sensor requires a substantial amount of input and you don't get that amount of turn input on freeways. This means:

The computer detects foreward motion (speedo).

There is no input due to the small steering movements on freeways.

The computer thinks something's amiss and locks out the rear steering only.

the lockouts are a pain in the butt, but nothing to really worry about. After all, who out there has also intalled a HICAS lockout kit??

Slide Grand Master

Slide

Posted
Posted

if the car has been in a crash from the rear it could have put it out,the hicas angle sensor more than likely is the problem.

there are tests on this site for diagnostics check them out before going crazy and just replacing stuff though

hope to help..

Slide Grand Master

Slide

Posted
Posted
OR your vehicle has been fitted with a Hicas Lock bar........the light will do the same thing if you have a lock bar installed. I suggest fitting one as hicas sucks dogs nuts.

hehehe yeah dogs nuts :D

ScottKing GTS-4 Community Regular

ScottKing GTS-4

Posted
Posted

The wheel angle sensor could be upside down on the boss kit. On the R32 it has Nissan written on it, take the boss off, rotate the wheel angle sensor until the Nissan logo is up the top or the wire connecting the horn is at about 2:00 and re-fit the boss. Also helps to wrap some slightly thicker rubber around the large prong on the wheel angle sensor to ensure it has a tight fit against the boss.

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