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californianhunger

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    R32 GTR Cluster/ECU Readouts?

    in Car Audio & Electrical

    Posted

    Hey all, I'm looking at building a custom display using a few things like Raspberry Pi, Arduino and Qt5; I have built something similar before for our E36 race car, but wanted to know how to interpret the following readings from the car:

    • RPM signal - is this just pulses? And is it 3 pulses per crank revolution?
    • Fuel signal - is this voltage or resistance based (assuming I am tapping the wiring at the back of cluster) ?

    I'll use the usual 2-wire RTDs for water and oil temp, and a linear 0.5-4.5V sensor for oil pressure, GPS for speed, and perhaps a MPX5700AP for boost.

    Nismo 320 Cluster in R32 GTR Issues

    in General Maintenance

    Posted

    23 minutes ago, GTSBoy said:

    There is an electrical difference. Well, there's no actual electrical difference as far as I know - it's just wiring pinouts. The speed signal out to the ECU is the same PWM. etc.

    I think something is different, not sure what, but this guide exists to swapping that analog to digital bit in the speedo cluster: 

    That's something I could do, but doesn't answer why RPM and temp are not working.

    32 minutes ago, Duncan said:

    I was not aware of an electrical difference, just cosmetic between series 1 and 2....I'd start with checking if temperature, rpm and speed (out) are all on the same plug that was not seated properly when you put it back in. The speedo itself is mechanical and is often installed incorrectly onto the cable (sounds like yours is OK), but the dash provides the speed signal conversion for the ECU and probably HICAS.

    Also, when you say power steering stops woking, I assume you mean you get less assistance, not none at all. If HICAS gets no speed signal it gets heavier but you should still have some power assist; I run mine without the speed signal at all times and find it OK.

    Yeah much less assistance. I would prefer to have the power steering working properly, the fix for that is in the link above. I'm going to try and re-seat the connector. I'm hoping it's as simple as that, but I doubt it ?

    Nismo 320 Cluster in R32 GTR Issues

    in General Maintenance

    Posted · Edited by californianhunger

    Hi everyone, 

    I recently bought a 2nd hand Nismo 320km/h cluster for my R32 GTR. I understand that there are two versions, one for earlier series 32, and another for the later 32's. The seller assured me it was working 100% in an early model (1990) R32 GTR, which is the same as mine.

    I installed it yesterday, it fit perfectly, and all the plugs in the back went in fine - but when using the car, the temperature gauge doesn't work and the RPM doesn't work either. The speed reading works and is perfectly accurate, but power steering stops working shortly after.

    It's also the blue-back one, with 4 screws at the back of the speedo; this all suggests that it's for a later model as well, where the electrical signal for speed for the power steering is different.

    I've seen a tutorial on here about swapping the speed sensor over from an old cluster, but is there any reason that the temperature gauge doesn't work as well? Are there any other differences on the later cluster that mean I shouldn't waste my time trying to use it in an older GTR at all?

    87008640_1699112463559905_1341501247852642304_n.jpg

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