HICAS light problems

[Mildman]

I have a question to the ether.

I am having a problem with the HICAS warning lamp coming on after around 15mins of driving.

It happens whether I cane it or not, and it has me a bit stumped.

Because it seems to be an event that happens after a given amount of time...it could be temperature related.

Other than that I have checked power steering lines for leaks and have not found any.

If anyone else has been through this traumatic experience and finally came to an answer I would appreciate the heads up.

R32 91 GTSt - pretty stock (no engine mods - only suspension and brake rotors)

[drifta180]

hey dude sorry i have no answer.. but i have the problem too i have a 1993 180sx and the same thing happens i start my car ans let it warm up for about 5 min and then the hicas light comes on..plus some times my turbo timer poo's itself too so i let it warm um then before im about to drive off i turn my car on let it sit for about 30 seconds the start it up again my hicas light stays off and sometimes my turbo timer works properly too... hmm got me stumped too .. if anyone can help it would be mighty sweet of ya's ..

[gts4]

Hey guys,

I have already posted a thread on hicas it is entiteled 'Hicas'

http://www.skylinesaustralia.com/forums/sh...8505#post488505

Check it out might be some useful info if not maybe you can help me

Dan

[Mildman]

gts4, there are some useful suggestions in your thread, I will defintely try re centering my steering wheel, and checking the postion of the HICAS sensor. With any luck it will work.

Thanks,

[Guest xbellx]

I have had a heart wrenching experience with Hicas lights. I finally solved the problem of the light coming on after five minutes of driving. It involved setting up the two sensors on the unit as follows. There is an input sensor & an output sensor, they look almost like a throttle positon sensor. the three wires are 5v positive, negative & output voltage. The out put voltages of both sensors must be identical, this is the key to the light not coming on. You must set it up with a multimeter on the output voltages of both sensors. adjust both sensors at the same voltage. They can go out of adjustment when drifitng & hitting gutters.

[Mildman]

xbellx

Very interesting...I would be very keen to hear more about how this is acheived. If you have any photo, more detail please feel free to private message (pm) me, or even post it on this forum.

I appreciate your input...and I'm glad there are other Skyline drivers out there that have felt my pain.

[ceedub]

Could anyone explain this adjustment procedure more clearly? Where are all these sensors and stuff???

How does one do the adjustment?

[AutoTrust]

Just a quick note; After fitting a momo wheel and after market boss kit my hicas light would illuminate after driving in a straight line for 10 or so minutes, after further inspection i found that the boss kit was different to the standard wheel in that the hicas sensor had too much room to move within the boss kit. to remedy the fault i wrapped the hicas sensor's prong with some adhesive foam and then some race tape to keep it neat while the boss was re fitted. now the sensor sits perfectly central with the gap taken up with the foam. Hope this has been of some assistance and MERRY CHRISTMAS HO HO HO............ now to wrap more presents!

[Nrage33]

Yea I have the same problem as AutoTrust. Might try that little wrapping trick...haven't really been bothered with it coming on, but if anyone else drives the car on the highway for instance, it freaks em out.

Mildman, don't worry...you're not the only one with a HICAS problem! that's why we're all here

[MINES_DATSUN]

ive had it b4 also.. yes people dp freak :ghost:

[gts4]

Hi Guys,

I have fixed my problem on mine it was the standard wheel or maybe it wasnt standard.

With the original the hicas sensor on the column was sitting about 30 degrees left, when i brought a boss kit and aftermarket wheel it sat top center.

This has fixed my problem no more hicas light coming on.

Hopefully this is the same problem some of you are having because it was simple to fix.

Dan

[ceedub]

I fixed my 'HICAS twitch' by cleaning the battery terminals and re crimping the wires of the main harness leading to the battery. I found that a power fluctuation will cause the car to twitch sideways when the HICAS light comes on. Most of the cables leading to the battery had loose connectors. After tightening everything the 'twitch' went away. However the HICAS light still comes on.

I'll try the wrap procedure next.

Still would like to know how to do that sensor adjustment though.

[AutoTrust]

Also, only ever disconnect your battery with the steering straight! If the wheels are turned then the hicas will self steer at 100kph!!! Weird but true. ho ho ho

[ceedub]

can the self steering be fixed by disconnecting the battery again with the steering wheel straight?

[AutoTrust]

can the self steering be fixed by disconnecting the battery again with the steering wheel straight?

Yes It Will fix that problem, you would have to turn your lights on and / or press the brake pedal to drain all power from the car, same as you do to reset the ECU.

[unwritten law]

I just got a new wheel & boss kit from santa yesterday and fitted it. I installed it yesterday but my wheel isnt at dead centre, i think its about 1 knotch out, and the HICAS light comes on after about 10-15mins of driving. Something to do tomorrow i guess, is re-align the wheel, and hope that the light doesnt come back on....

the boss kit is a HKB one, and i hope that it is the right one....