Minty.Fresh BN Sports Altezza

[mlcoolj]

you should do a writeup about the wiring, you would help a lot of people I think

[Ciaranfox09]

Yeah please do a write up on the wiring it would be a great resource im hopefully going to do this conversion aswell. Ur doing some great work man keep it up !!

[peter0991]

So stuck some oil in and adjusted the fuel pressure by eye. Bodged the maf on.



And turned the key.

https://www.youtube.com/watch?v=wPx4x2wmUz4

Turned the fuel pressure up a little more

https://www.youtube.com/watch?v=Hjihyy8UmFM

Then noticed the pressure gauge was slightly leaking. So wrapped some more ptfe tape around it and screwed it back in.

And one more time

https://www.youtube.com/watch?v=8StJs9_3uNQ

Even the cluster works. Apart from inaccurate tacho readings

http://youtu.be/_UHgMkh7St4

Bring on the clutch! Cant wait to take her for a spin!!

[mlcoolj]

that is just badass! Congrats man!

[choopz]

Yea man congrats and keep up the good work

[Tosh21]

Sweet baby jesus that sound!!!

[peter0991]

Im just gonna stick this stuff here. Pretty much all that I used to fire the engine up.

This diagram helps to understand the working principle of the ECU. Note however that the fuel pump relay is not in the diagram, but it still exists. (im referring to Circuit Opening Relay)



IGSW - Receives a signal once the key is turned in the barrel.

BATT - is constant power to the ECU

MREL - Once ECU gets the IGSW signal, it uses MREL to close the main relay. Which in turn provides +B to the ECU.

+B - Switched ECU power.

Igniter and Coils also need power. My car had a wire that supplied power specifically to coilpacks once the key is turned.



If you havent seen the triplecrowndrift.com write up on 1jz vvti wiring, I suggest you google it since it has some useful info, but I will put the pics he made below.

ECU Pinout. Specific to 1JZGTE VVTI from a JZX100. Dont use it for anything other than this engine. All JZ ECU's are slightly different.



To start the engine, you need only the following:

#G
IGSW - Switched Ingition power
BATT - Constant Batt Power
+B - Power supply through the main relay after its been switched by MREL

Then these ones to drive
STP - Stop signal, not sure exactly what it does. Maybe deceleration map.
SPD - Speed signal from gearbox or speedo cluster. All depends on you car. But the ecu needs this signal for the engine to work properly.

#H
MREL - Switches main relay after IGSW signal is obtained by the ECU.
FC - Used to switch the fuel pump relay. If i remember correctly, this pin is grounded through the ECU.

Once again, above to start, and these to drive.
W - Check Engine Light
FPU - Fuel Pressure up. Solenoid under the intake manifold
TE1 - Diagnostics terminal
These next two pins are incorrectly marked on the pinout. They should be shifted one space to the right.
ABV - Turbo blow off ( Re-circulation) Vacuum switch
PRG - Fuel vapour vacuum switch.

You dont need anything else other than mentioned above connected to the ECU.

Then you have your engine body plugs. In these you have:
Power to sensors
Power to coilpacks
Power to injectors
Starter signal







#2





#3 The pinout is slightly wrong on the connector below. Use continuity test to get correct pinouts





#4




#5





#6





Ill try update the above with more info. Cant remember much more off the top of my head at the moment.

Altezza specific ECU to JZ ECU wiring

[mlcoolj]

nice writeup! the mods should make that post a sticky!

[Trd Shane]

Your attention to detail and yor patience in doing the write ups makes you a hero haha you have helped many a people out including me by these write ups keep it up lad ... You should start charging people for your knowledge haha might help get the tezza finished quicker haha

[peter0991]

Test fitted the JZX100 downpipe. Seems to look ok. Will probably switch to v-band instead of a normal flange for the exhaust side.



Rolled her out from the driveway. Oh man, cant wait to finish everything and have her driving.



Test fitted the bonnet catch. Will need to weld a tab to the intercooler for the third mounting hole



Should work ok



Pulled the engine back out for the clutch and gearbox to go on



Got the shifter extended.



Took some fine tuning with the inner linkage, but we got there in the end, haha.



Aaaaand the scary part! Relocating the ecu loom into the car. Thats gonna be so much fun!!

[twiglett-RS200]

im planning on putting all the ecu stuff inside the car so if you come across any really difficult bits and find a way round them please let me know.
im going to have a lot of free time because i quit work yesterday (probably not the best idea when im skint and its Christmas and i`ve moved out and iv`e got two holidays to pay for)

[peter0991]

Im on it

[Trd Shane]

Who extended the gear shifter for you did you do it your self ??
How much did you have to extend it all by ??

[peter0991]

Local fabricator did it. Extended by 70mm

[mlcoolj]

top job!