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R34 Gtr Ecu Pin Out

sinistaGTR

By sinistaGTR,
in General Maintenance

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sinistaGTR Grand Master

sinistaGTR

Posted
  • Author
Posted

just so everyone is aware..the fuel pump relay control signal is only .6v...so nissan must use a voltage amplifier of some description or a low voltage relay. My fuel pump stopped work so i did the 14v direct relay mod and wanted to use the ecu fuel pump relay signal....

I also checked this voltage against my new power fc djetro and its the same voltage (wire cut as to elliminate any other interferance)

  • 7 years later...
djvoodoo Experienced

djvoodoo

Posted
Posted

Rather than start a new thread...

What pin out would control the MFD "Menu selection" screen. Currently i cannot change gauge outputs as the "menu selection" is greyed out all the time. Looks like it's not sensing i am at 0 km/h or in park.

 

djvoodoo Experienced

djvoodoo

Posted
Posted
1 hour ago, GTSBoy said:

Um....what makes you think that the MFD runs from the ECU? I would have thought that the MFD would be its own thing and just pick up the data that it needs from the various CUs on the serial bus.

If that's the case would anyone know if the internal board picks up a speed sensor or a park/brake wire? As far as i know, the menu selection 'greys' out when the car is at a speed over 20km/h. Mine is greyed out all the time.

I only just noticed this after having a new battery installed plus new ECU etc.

jrm Veteran

jrm

Posted
Posted

Very sure it doesn't pick anything up off the bus - cos it doesn't connect that way at all.

When I put an MFD in my R34 GTT - I had to connect it into the ECU and behind the dash- though I imagine it's slightly easier on an R34 GTR, as the wiring looms are already there - those are the signals it's expecting to receive - not something on a bus.

This page has a lot of information that might help, including pin-outs, etc.

djvoodoo Experienced

djvoodoo

Posted
Posted
12 minutes ago, jrm said:

Very sure it doesn't pick anything up off the bus - cos it doesn't connect that way at all.

When I put an MFD in my R34 GTT - I had to connect it into the ECU and behind the dash- though I imagine it's slightly easier on an R34 GTR, as the wiring looms are already there - those are the signals it's expecting to receive - not something on a bus.

This page has a lot of information that might help, including pin-outs, etc.

Thanks. So i'm an idiot. Reason the menu selection was greyed out was because i wasn't in the correct menu mode I.E wasn't on the single or dual gauge display.

All good now...

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