R33 Power Steering Problem Hicas Rack And Non Hicas Loom ?

[BLITZ-26]

Hey guys been chasing the reason the ps has been heavy for a while and its just occured to me that its a non hicas motor and loom and the car was originally hicas so the solenoid on the rack is unpluged caz there is no plug to plug it in, can I tap into the hicas ecu and wire it up to fix the steering or is there another way around or thing to do ?

[GTSBoy]

If you want it to work properly, then yes, you need to put in wiring equivalent to the original HICAS wires in the old loom. There is a way to bodge it so that you have feather light steering all the time (which is just to give 12v and earth to the solenoid all the time) but that's a bit shit, and I wouldn't do it.

You're going to need the wiring diagram for your car to be able to pick up where the HICAS wiring is currently finishing up in the engine bay. I'd say it's hanging about somewhere near the fusebox, but could be wrong.

[BLITZ-26]

Yeah I dont want to bodge it, plug is there only I think it might pickup off thr engine harness, any one have a wiring diagram for the hicas at all ?

[GTSBoy]

What car?

[BLITZ-26]

It was an r33 gtst sedan s1 it has a na r33 series 2 from a gts4 in it atm and there is no plug for thr rack on the loom I tried follwing it on my other car but couldnt see where it went

[GTSBoy]

So find the wiring diagram for your car (I don't have it) online and find it that way.

[BLITZ-26]

Seeing its not in the engine harness I think ill have to run a whole new line so ill have to find out if the signal comes via the ecu or hicas module in the boot

[GTSBoy]

It definitely comes from the HICAS computer, but the point is that the wiring that comes from the HICAS box to the front of the car will still be there. You just need to pick it up at whatever loom/body plug it ends at and carry it on to where it goes. Hence why the wiring diagram would be useful.......

[BLITZ-26]

Yeah it plugs into the engine harness, and its the non hicas harness so I assume its there near the ecu plug somewhere and ill have to tap into it there trying to source a wiring diagram for it now

[headwithbeard]

i do belive i have the same problem here too, have there been any developments with this issue?

[headwithbeard]

well, if anyone is still interested. there's a pink wire that goes to the nolex type or white plug that sits between the fuse box and the washer bottle, that's the switched supply from the hicas module. then the grey connector above it has a straight black one that's the earth in the original loom.