Another Hicas Problem

[hanyou]

hey guys.. had a problem tonight it seems i was doing some spirited driving on the way home and all of a sudden my power steering jus gradually stopped working and the hicas light turned on?... i turned off the car and as usual the car went turbo timing... however the power steering came back on straight away?..

checked for leaks/smoke nothing found.. turned on the car again everything was normal.. then about 5min later same thing.. power steering gradually stopped working and hicas light again...

turned car off and on about 5 times now same thing happens... any ideas?

oh and too add.. my speedo jus stopped working as well at the same time

[hanyou]

woops my bad.. lol jus did a search there was liek 30pages of info haha.. disregard this thread

[Sl!m]

first thing you should do is discconect yuour hicas and never ever use it again

[GTAAAH]

Hey if you figure out exactly what is the problem PM me or something. No one else besides you and me seems to have had the problem with losing steering until you turn the car off, and no one seems to know anything about it.. So yeh, if u figure it out, give us a yell.

[MerlinTheHapyPig]

do a search for

+heavy +steering +hicas

or just +heavy +steering

(select all sections, and 'any date')

there are quite a few threads on this problem, I haven't found a definitive answer for your problem from the few threads i've looked at.

however...

some people seem to think if your battery or alternator is on it's way, it can cause the hicas solenoids and cause this problem due to low voltage

some people seem to think it could be a problem with the vehicle speed input on the hicas

Anyway... Before you start changing batteries and the like, here is how to get hicas into diagnostic mode

http://www.overflow.250x.com/diagnostics.htm

if you can't get it into diagnostic mode, then i'm 99% sure it will be the steering angle sensor (or perhaps a fault with the computer itself)

[hanyou]

r32 gts-turbo sent ya a pm

[GTAAAH]

Hey, dude if you get the HICAS diag working can you post here exactly what you did, the timing, and whether you had to change anything? thanks

[tacker]

Hanyou,

I would think that the speedo not working will have a effect on this as it is speed related device. And this input comes from the speedo drive.

[hanyou]

yeap ur right.. ive bought a speedo cable today.. will be putting that in tomo should be all good afterwards

[sav man]

I had the same problem, the wire between the speedo and HICAS ecu had been cut somewhere. I rejoined the wire and it was all good.

[hanyou]

ohh my speeedo cable is broken lol.. theres nothing there to spin the needle lol..