HICAS light always on?

[vdn37]

HI all

I have a r34 and on the dash board the HICAS lights is always on. Firstly what does HICAS do, does effect anything if its always on, and thirdly how do i turn it off if its not meant to be on?

[James]

On my R33 GTR the HICAS light came on when I took the fuse out. Not sure about the R34 system.

HICAS is described below. Taken from a Wiki.

HICAS (High Capacity Actively Controlled Suspension) is Nissan's rear wheel steering system found on cars ranging from the more recent Skyline and Z iterations to smaller models like the Nissan Cefiro (A31), 240SX/180SX and Nissan Serena/Nissan Largo. It is also found on models from Nissan's Infiniti division, such as the Q45 and the M45/M35. Unlike other four wheel steering systems, HICAS and Super HICAS are fitted to improve handling rather than as a parking aid.

Earlier HICAS versions used hydraulics to steer the rear wheels. The hydraulic system was powered by the power steering pump and used speed sensors to determine how much and in which direction to steer the rear wheels. Later versions, called Super HICAS, moved to an electric actuator for the rear steering rack, making the system much lighter. The Super HICAS system also used its own computer to control the system instead of speed sensors. HICAS and Super HICAS rear wheel steering is limited to about 1 degree in either direction.

HICAS was introduced on the 1986 Skyline GTS coupes (GTS, GTS-R, and GTS-X). The system was later adapted to work on many models in the Nissan range, beginning with the Passage GT

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[vdn37]

hmmm. will i would like to know which fuse it is. because my fuse box is in japenese. And how come you took it out?

[Abbeymotorsport]

most common problem related to HICAS light coming on is Steering wire problem. Normally caused by an aftermarket steering wheel being fitted.

1st thing to do is put the steering wheel straight , disconnect the battery wait a minute then refit .

if this doenst work find a friendly local Nissan dealer to look at the hicas fauly with his consult, tell him to look at the steering wire angle and turn the steering wheel the numbers you should go up n down depends which way you move the steering wheel.


hope this helps.


Mark

[vdn37]

when i brought the car it was like that. and the steering wheel is still stock. so i dont no?

[Bubble]

When we bought Honeys R34GTT, the Hicas light was on.

Got the car on the ramp and saw that the Hicas plug by the rear steering rack was dangling in the breeze, plugged it back in and the light went out

[vdn37]

Hmmm. that could be same with me. so you said it was at the rear of the steer? what does the plug look like?

[Bubble]

Originally Posted by vdn37

Hmmm. that could be same with me. so you said it was at the rear of the steer? what does the plug look like?

erm.........it looks like a plug


I think it was Brown though and you can't miss it

[vdn37]

heheheh. ok then ill check that out some time soon..is that you skyline in the pic?

[Bubble]

Yes that is mine

[vdn37]

Looks nice i really like the bonnet. i was thinking of getting one like that. but its a bit ccostly for at the moment.

[tau]

Got hr31 and if fluid in steering reservoir is low, it triggers the light.