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Hi guys, I recently picked up another R32 GTR and I'm getting code 18 on the computer in the trunk just under the speakers. Code 18 being "ETS PRESSURE SWITCH or CIRCUIT" anyone have any idea what part that is relating to? The previous owner had gotten a HICAS lockout bar and said he did something with the Power steering pump by having something welded, I can't recall so don't quote me on it. If anyone has ran into this problem, could you maybe give me advice or an idea where the culprit is? I should be getting a pretty crummy snowfall soon so I'd like the AWD to be working. Thanks GTRC (:
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HICAS is a separate system (steering).
Sounds like a fault in the wiring from 4wd ECU to ETS pump (4wd ECU unplugged, wiring falling out of 4wd ECU plug that goes to ETS pump, 4wd ECU itself, 4wd fuse under dash on drivers side has blown or been removed). ETS pump changes the pressure to transfer case. I think was more pressure from ETS pump to transfer case = more 4wd.
Look at this to understand how the 4wd works on a R32 GTR, as it shows the location of the ETS pump that I'm talking about and how it's connected to the transfer case, 4wd ECU -
4wd / ABS? ECU is located under rear parcel tray on passenger side on R32 GTR. HICAS ECU is located on drivers side in same location.Last edited by Skym; 12-01-2013, 03:05 AM.RESPONSE MONSTER
The most epic signature ever "epic".
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Just bleed your ETS system, most likely the cause if the connectors are all ok.Originally posted by nlevi View Post
Ahows you how to do that in the FSMNo build thread.
1991 nissan
El terror
"Built not bought" sooner or later = "broken not running"Comment
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Levi, your gonna have to give me a ride in the GTR in winter one of these daysComment
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Hey thanks for your reply.Originally posted by Skym View PostHICAS is a separate system (steering).
Sounds like a fault in the wiring from 4wd ECU to ETS pump (4wd ECU unplugged, wiring falling out of 4wd ECU plug that goes to ETS pump, 4wd ECU itself, 4wd fuse under dash on drivers side has blown or been removed). ETS pump changes the pressure to transfer case. I think was more pressure from ETS pump to transfer case = more 4wd.
Look at this to understand how the 4wd works on a R32 GTR, as it shows the location of the ETS pump that I'm talking about and how it's connected to the transfer case, 4wd ECU -
4wd / ABS? ECU is located under rear parcel tray on passenger side on R32 GTR. HICAS ECU is located on drivers side in same location.
I had checked all the fuses and they're all okay. the connections into the 4wd ecu also look fine, I haven't checked any further than that. I had also noticed I didn't have a rear reservoir in the trunk for the power steering fluid, and I'm curious if that has any part in the 4wd? I guess I'll have to get my car on a lift to check out that ETS pump though.Comment
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Awesome, I will give it a shot when I get the chance at work. Thanks for your input!Comment
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Haha sure man! As soon as I get her running a little better I'll definitely pop byOriginally posted by That_Guy_S30 View Post
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...Originally posted by nlevi View Post
You DO have a driver-side reservoir in the trunk, though, right? Because HICAS is fed from the engine bay, the PS reservoir. The reservoir in the trunk is for the ETS (filled with ATF fluid).
Check the air bubble height between the intake and the outake pipes (a clear gap in the fluid which should be around 1cm thick IIRC?) and colour of the reservoir's fluid (if you do have it, which yes, would be a critical part of the circuit).Last edited by MarusGTR; 12-03-2013, 01:33 AM.1992 BNR32 SKYLINE GTRComment
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Originally posted by nlevi View Post
You're welcome. The 4wd has it's own resouvoir behind the trunk / boot trim (as mentioned above, filled with ATF fluid, but not sure what Dexron they used back when car was made, might have been Dexron III).
You can replace ETS pump, 4wd ECU with a pump action handle (like they do on GTR dragcars). I think it was Veilside that sold this handle. Some custom make their own version of this handle for dragcars.RESPONSE MONSTER
The most epic signature ever "epic".Comment
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Wait a sec. You have 2 20 year old GTRs and don't know about the reservoir?No build thread.
1991 nissan
El terror
"Built not bought" sooner or later = "broken not running"Comment
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lol the previous owner who did the rear HICAS lockout snipped all the lines to the ETS pump and crimped the lines from the front ps pump to the rear rack? but no this one doesn't have the rear reservoir.Originally posted by Marus92 View Post...
You DO have a driver-side reservoir in the trunk, though, right? Because HICAS is fed from the engine bay, the PS reservoir. The reservoir in the trunk is for the ETS (filled with ATF fluid).
Check the air bubble height between the intake and the outake pipes (a clear gap in the fluid which should be around 1cm thick IIRC?) and colour of the reservoir's fluid (if you do have it, which yes, would be a critical part of the circuit).Comment
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Lol I do, this one does not have one though. Already on orderOriginally posted by Bruizer View PostComment
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So you need new lines and reservoir at the least. Highly likely you will need a new pump too if that's been running for any length of time with no oil through it!Comment
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I think the new pump will be needed then, haha it's been RWD with the previous owner for half a year at least LOL.Originally posted by spinnanz View PostComment
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I have a spare if u need, in Calgary, pm me if u end up needing one, id try that one first, if the fuse was pulled it's prob still okComment
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