Jump to content
SAU Community

Recommended Posts

The Hicas system is uses the pwr steering fluid to run it's system. One of the warnings that you can get with Hicas is low fluid levels, which also means your pwr streering couls also be low (quite probably.) Check fluid and check for leaks around the hoses to the system. Leaks are not uncommon - GTR, GTS 300ZX, etc...

r33gts, I would recommend you first check the power steering fluid as that may cause the heavy steering, and the HICAS light to illuminate.

Alternatively check the connections to the electric HICAS unit behind the diff as some experience heavy steering when it is disabled.

The power steering in the skyline is variable, getting heavier at high speed so it may be some other electronic fault. With that in mind do a diagnostic check on the ecu as well.

  • 1 month later...
i have the same problem buy mine is caused by fitting an aftermarket steering wheel did you fit a aftermarket wheel?

Hey man,

I have an aftermarket wheel and my HICAS light is on 24/7.

Just wondering if yours is on ALL the time aswell or if its only on around corners etc.

Also has your steering become quite heavy since the new wheel?

For those with aftermarket steering wheel and boss kits, HICAS is a common problem.....firstly make sure your Boss kit is HICAS compatible it needs sensors in the boss kit.

Secondly, make sure your steering wheel is on straight......loosen it off again, drive along in a nice straight line say 20m, then pull the wheel off and put it on again. Then repeat until you are certain it is straight. HICAS will report an error if the wheel is crooked since it thinks the car is turning all the time :D

  • 2 weeks later...

Revolution race gear sell the HKB boss kit for HICAS equipped cars. Well they got mine in. My HICAS light comes on sumtimes after 20-30 mins sumtimes not at all. I think my car needs a wheel allignment, as either way i adjust the boss kit one spline either way is still out... Would this cause the light to come on?? There is a HICAS diagnostic isnt there?

Revolution race gear sell the HKB boss kit for HICAS equipped cars. Well they got mine in. My HICAS light comes on sumtimes after 20-30 mins sumtimes not at all. I think my car needs a wheel allignment, as either way i adjust the boss kit one spline either way is still out... Would this cause the light to come on?? There is a HICAS diagnostic isnt there?

yea my hicas light comes on after 20-30 mins driving also.. only really comes on if im a freeway or something..

also running a HKB boss kit with hicas support

Guys you can run a hicas diagnostic by following these steps:

Procedure:

➢ Switch ignition off, transmission in neutral or auto in Park.

➢ Start engine

➢ Very quickly (with a couple of seconds), turn the steering wheel left and right about 20

degrees from centre five times, and then pump the brakes five times, then press the

brake pedal once more this will enter diagnostic mode.

➢ Drive forwards or backwards about 5 metres at a speed less than 10km/hr, this will

enter full diagnostic mode.

➢ The HICAS light in the instrument cluster will be flashing quickly (for normal) or will

flash a code indicating any problems.

➢ Long flash = first digit, short flash = second digit.

➢ Diagnostics will return to normal after five minutes, or any speed over 10km/hr,

or ignition is turned off.

The codes are as follows:

HICAS Diagnostic Codes 1989-1993

1 HICAS solenoid right hand

2 HICAS solenoid left hand

3 Cut off valve

4 Power steering solenoid

5 Vehicle speed sensor

6 Steering angle sensor

7 Neutral position sensor

8 (Auto) Parking brake sensor,

(Manual) Clutch sensor

9 (Auto) Inhibitor switch,

(Manual) Neutral sensor

HICAS Diagnostic Codes 1993-1999

11 HICAS control unit

12 HICAS motor power supply not present

13 HICAS motor output not present

21 Vehicle speed sensor not present

22 Steering angle sensor not present

23 Steering angle sensor neutral or not present

24 Rear main sensor input not present

25 Rear sub sensor input not present

31 Parking brake sensor input not present

32 (Auto) Inhibitor switch input not present

(Manual) Neutral switch input not present

33 Engine speed signal not present

Hope this helps!

My light also seems to come on from time to time. When I start the car it stays on for a couple of hundred meters, then when I tip into conrners it comes on again, and sometimes when I give it a boot full in a straight line. Weird?? I have the standard wheel so I assume the boss kit hasn't been tampered with...

Does anyone know if the light is meant to come on whislt cornering?

  • 1 month later...

After running my R32 GTR in diagnostic mode the Hicas light flashes four times quickly and then the fifth flash is a long one. The Hicas light turns off for a couple of seconds before repeating the above sequence.

I have read the Hicas diagnostic codes above but I am unsure how to interpret them. Any help would be appreciated.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...