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Hicas Problem

KJS

By KJS,
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KJS Enthusiast

KJS

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Hi i have a strange hicas problem.

Car is 1993 R33 Sedan Auto RB25DET

The HICAS usually light on every second start of the day.

Which means everyday when I first start my car, it is fine.

Till I reach somewhere and turn off the ignition, after a while turn on again, the HICAS light will comes on.

So it is like, for a non-cold start, the hicas will light on.

Everything is fine, all fuses are checked (under driver's side and rear boot).

Mechanic asked me to seek help from a power steering specialist.

What do you guys think?

I tried to run the HICAS diagnostic but it never success, tried a couple times and the engine check light never flash.

I wonder is there anyway to diagnosis the HICAS?

has anyone encounter this before?

also does HICAS affect fuel consumption? cause I have been having 16L/100kms for a very stock car.

should I remove the HICAS with a lock bar for daily driving (normal drive)?

car had just recently been major serviced.

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KJS Enthusiast

KJS

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Hicas Problem:

HICAS Solenoid R.H.

HICAS Solenoid L.H.

Fail-Safe Valve

Vehicle SPeed Sensor

Steering Angle Sensor

Steering Neutral Position Sensor

Parking Brake Sensor

Inhibitor Sensor

among these i think only fail-safe valve and inhibitor sensor is related to car temperature?

when the coolant temperature is low and if the car is ignited there will be no HICAS

it's just when it is non-cold start then HICAS will turn on

what is fail-safe valve (where is it?)

and inhibitor sensor

could someone explain?

cheers

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lineskee 33 Community Regular

lineskee 33

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easy solution is to just get a hicas lock bar and remove the worry all together. Remove the hicas light out of the dash and regularly check your power steering fluid to make sure its topped up.

I read somewhere a very long time ago, and I dont know if this applies to the newer models of HICAS where they dont use the powersteering fluid to work, but apparently if there is an Air bubble in the lines (or if it wasnt bled properly) that could possibly trigger the warning light. In saying that, try bleeding the powersteering fluid properly and see how you go.

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KJS Enthusiast

KJS

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easy solution is to just get a hicas lock bar and remove the worry all together. Remove the hicas light out of the dash and regularly check your power steering fluid to make sure its topped up.

I read somewhere a very long time ago, and I dont know if this applies to the newer models of HICAS where they dont use the powersteering fluid to work, but apparently if there is an Air bubble in the lines (or if it wasnt bled properly) that could possibly trigger the warning light. In saying that, try bleeding the powersteering fluid properly and see how you go.

yea I am thinking to remove the HICAS with the lock bar but people around me suggest me to find out the problem before removing it because it indicates a problem

my power steering fluid has been changed lately after a major service tho

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