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Location:
Sydney
Registered:
May 2002
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1UZ-FE Wiring Diagrams
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Thu, 08 August 2002 00:53
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Well my mates dad has nearly finished his project car, a 2JZ into an old 1929ish Vauxhaul. He is now going to try get his sons car on the way to being finished too.
He asked me to try track down a wiring diagram for the 1UZ-FE so he can get the old FJ UTE rolling.
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Location:
Canada
Registered:
August 2002
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Re: 1UZ-FE Wiring Diagrams
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Thu, 08 August 2002 02:10
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What year 1UZ?
with or without Trac?
As fitted in what model? (soarer/celsior)
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Location:
Sydney
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Thu, 08 August 2002 03:42
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I wouldn't have a clue, what have you got?
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Location:
Montrose, VIC
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Thu, 08 August 2002 04:02
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Speaking of which, I could really use a 1uz diagram too, for once with trac cont., from UZS130 Crown. Can anyone help??
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Location:
ACT
Registered:
July 2002
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Re: 1UZ-FE Wiring Diagrams
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Fri, 09 August 2002 06:44
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The wiring diagrams are different for each car.
I need to know which model car your engine and ECU came from.
Some cars like the LS400/Celsior and the Soarer only have one ECU for both the engine and trans whereas the Crown engines have a separate ECU for the engine and trans.
So the first thing is to make sure you know which model car engine you have and then if you have all the computers (for the Crown anyway). Of course if you don't have the ECUs the wiring diagrams are useless to you.
Tell me which one you have and I can supply a diagram.
Yes I do have a Crown one. Trac control won't work unless you have the traction control ECU.
On another note I have designed a controller which will make the auto gearbox "tiptronic" if this is more to your liking than a standard auto.
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Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Fri, 09 August 2002 10:20
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KDog...
You and I have spoken on the 'phone previously (I'll be using one of your 'box controllers) and I'm curious about your "read" on the Crown engine. Are they, indeed, de-tuned as I've been told (my Crown engine arrived yesterday) and, if so, are the differences - with the Soarer engine - that big? I want around 220-230KW from the engine...is this possible with a Crown engine?
Bear in mind that:
Exhaust will be after-market (including extractors, if they'll fit)
Intake will be...whatever we can fabricate that is better than stock...
Engine management will be via Autronic SMC or similar.
If you like, you can email me at biased99@hotmail.com
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Location:
Brisbane
Registered:
August 2002
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Re: 1UZ-FE Wiring Diagrams
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Sat, 10 August 2002 01:38
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Hi Kdog,
I am helping a friend with a conversion of a 1uz-fe in to a old Jag, and am very daunted by the amount of wires 
The 1uz is from a crown, it is the traction control model, we think we have all the ecu's as it is a fairly complete front cut,
could you please forward any info if possible. We wish to use the auto and std computer if possible (whatever it takes )
Thanks heaps
Bruce
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Location:
Montrose, VIC
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Sat, 10 August 2002 12:01
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I've got a UZS 130 crown ½ cut, and its complete. Its got the TRC, although I was planning to turf this anyway. I'm not quite sure if its got 1 box or two, haven't actually pulled it apart yet.
Also the transmission controller widget you made up, I'd be interested to learn a bit more about this, I may even sell the ½ cut I've got and do things a bit different yet anyways. Oh, and can anyone remember which sump the Crown 1uz has got? Its out there under a pile of crap and I gotta clean things up before I can even get to it 
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Location:
ACT
Registered:
July 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 11 August 2002 23:15
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biased99,
The 1uzfe is a very capable engine (like most Jap engines) the only way that they have restricted the engines output is through the exhaust and manifold. The engine itself is exactly the same as found in the same year Soarer,Celsior. The exception is that it doesn't have some of the exhaust gas venting valves that are found on the Soarer, Celsior. This does not effect performance and only aids the engine emmisions when starting the car from hot.
If you check the manifolds that come with a Crown engine you will understand what I mean by restrictive, the manifold on the Soarer is still very restrictive and has a slighly different design, I don't know if its bettter or worse - from looks I would say its slightly better.
In the US they can modify the standard ECU tuning but I suspect they are just playing with the HEX code in the ECU and aren't exactly sure of what they are doing. They could be changing the calibration data for one of the inputs or any number of things - who knows?? This is not the way to modify tuning.
With the standard mods of manifold and exhaust you should have no problems reaching 225KWs. At a guess with adding cams and porting you should be able to achieve close to the magic 100Hp/litre figure. On a side note a friend has just had extractors made for his Soarer. I'll find out the details as to who made them and post them.
zigg
The only thing you will need apart from the engine ECU and the transmission ECT are all the engine sensors, the gear selection switch from the auto shifter, the power economy switch and the OD switch. Although the last two can be bypassed or home made switches. You will need the gear selection switch found at the bottom of the auto shifter as it has the netral startswitch inbuilt also. You won't be able to use the traction control as you won't have all the sensors. If the ½ cut is complete then don't cut any wiring on the ECU and ECT looms until you have the diagrams. There are 2 wires which I am not sure about as I had to translate a dodgy japanese faxed diagram. So I may have to get someone to check them with a multimeter (I would do it myself but my engine and ecu and wiring harnesses are separated by about 30KMs).
Hopefully the diagrams will be on the web soon if not I can fax or post them to you.
mrshin
You won't be able to use TRC anyway as the ½ cut doesn't come with all the sensors that are required. The Crown has a middle mount sump and the oil filter is moved down the engine towards the gearbox by metal oil lines.
My gearbox controller is made to use standalone ie with aftermarket engine management. I built this unit so that I could shift up and down gears with a push of a button. Basically you push one button the gearbox moves up a gear you push another button and you go down a gear. It also has outputs to display which gear you are in, you can use separate LEDs or a seven segment display. It will also give quicker shifts as opposed to the seamless changes that you will get in a Soarer or LS400.
I am currently designing a model to fit into Soarers. I have to make sure that it still works without causing any changes to the engine ECU.
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Location:
Brisbane
Registered:
August 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 11 August 2002 23:32
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Thanks heaps Kdog, i await the diagrams with baited breath, but no rush, Gavin, the owner is still doing engine mounts etc. He is doing his own extractors for the Jag so it should be interesting. Thanks again
Bruce
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Location:
Montrose, VIC
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 11 August 2002 23:37
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I also very keenly await a wiring diagram Although I also won't be able to get near the mongrel thing for a while yet.
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Registered:
August 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 25 August 2002 09:23
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Hi KDog, Bruces' mate Gavin here. The Jag is forging ahead, engine & g/box mounts are done, standard Jag shifter is adapted, extractors and twin 2.5" exhaust are done. Its been a busy weekend....ha ha ! Now it's time for the wiring. I've removed the wiring from the 1/2 cut complete and am starting to delete unnecessary fittings. Could you please supply me asap a copy of the wiring diagram to suit a Crown with TRC and seperate transmission and engine ecus'. Thanks in advance for your help....Gavin
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Location:
Toowoomba
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 25 August 2002 11:37
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We are considering the use of a 1UZ-FE for another project - a MGV8.
I've done a lot of searching for a wiring diagram for a 1UZ-FE. They are hard to find. Hasn't anyone else managed to source one yet.
I may have to pay for one - ouch that would hurt.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 25 August 2002 12:19
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Yeah, I want a diagram for the Crown too! If theres $ involved, maybe we split the bill or something...
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Location:
ACT
Registered:
July 2002
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Re: 1UZ-FE Wiring Diagrams
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Sun, 25 August 2002 23:08
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OK
The Crown wiring diagrams are all complete. I was going to post them on the net but I don't have the time. Its easier to print them out and post them to people. If anyone who wants them would like to email me their postal addresses I will mail them out.
I have had to pay for some of this info (as crap as it was), and also my hard work to make the diagrams so I only ask that people do not redistribute them. I like to choose who my work goes to and through my search for info I have found people who I do not want to benefit from my work.
You can email me at
K_Dog@bigpond.comcan you please place "crown 1uzfe wiring" as the subject as I have an automatic filter set up for this. If you don't have this as the subject I am likely to ignore your email.
Thanks
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Location:
ACT
Registered:
July 2002
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Re: 1UZ-FE Wiring Diagrams
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Mon, 26 August 2002 02:56
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Ohh yeah if people need help with Soarer or Celsior(LS400) wiring I also have schematics for this.
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Location:
brisVEGAS
Registered:
March 2003
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Re: 1UZ-FE Wiring Diagrams
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Tue, 11 March 2003 01:49
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newbie to the boards
but YGM
hopefully you are still able to do this?!?!?!
cheers
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Location:
adelaide
Registered:
July 2004
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Re: 1UZ-FE Wiring Diagrams
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Sat, 17 July 2004 01:39
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your a dead set legend this engine is for a cobra car kit.
the engine is from a 92-94 crown with auto trans and full loom.
could you pleasesend the diagrams to Roy VanDerVegt. 105 Heysen ave, Hope Valley, S.A 5090. This will get me out of trouble as I dont want to blow up the ECU on powerup. many thanks.If you want anything email me at liane.v@adam.com.au
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Location:
ACT
Registered:
July 2002
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Re: 1UZ-FE Wiring Diagrams
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Mon, 19 July 2004 03:52
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The wiring diagrams for the Crown UZS131 can be downloaded from here;
ECU wiring diagram
ECU pinout
ECT wiring diagram
ECT pinout
I am not sure if there is a download limit on this account.
Also some of the wiring for the speed sensors is not correct. Will fix when I know the full story.
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