Hey, I've done that exact swap. A 03 Matrix ECU or 00-01 Celica ECU will be better. For wiring, don't bother swapping out the harness. It's best to leave it completely stock and build an adapter. I have all the wiring diagrams you need. I have been working on a full DIY guide on the entire swap, I'll polish it off and post it soon.
2zz swapping my prizm hopefully any and all info is very appreciated
SO, I have an 02 prizm , 1zzfe , burning oil like crazy and started knocking I need a new engine and I’ve wanted to 2z swap it for a while now , I’m going to eventually so I don’t see the point in buying another 1z just to put a 2z in later , so here’s where I’m at for requirements
2zzge from a 02 celica gts (cable throttle)
Celica gts ECU 02
engine harness from a 02 celica
1zz exhaust header
(i want to c60 swap it as well but that’s not in the budget right now so im sticking with the c59)
I know there’s issues with wiring the engine into my car but I have no idea WHAT those are , I’ve read that I can use a 02 4spd auto corolla harness with extra wires for pressure sensors and vvl but I don’t know what that means so pls help
2zzge from a 02 celica gts (cable throttle)
Celica gts ECU 02
engine harness from a 02 celica
1zz exhaust header
(i want to c60 swap it as well but that’s not in the budget right now so im sticking with the c59)
I know there’s issues with wiring the engine into my car but I have no idea WHAT those are , I’ve read that I can use a 02 4spd auto corolla harness with extra wires for pressure sensors and vvl but I don’t know what that means so pls help
1 - 20 of 93 Posts
Yep. Take the stock ECU (or any ECU that will plug into your existing harness) and desolder the female plug off it. Bend the pins on it straight. Then go to a junkyard and find a car where the male ECU plugs plug into your ECU of choice, and cut them off. Then you find the ECU pinout for your 5 speed Corolla ECU, and the pinout for the 2zz ECU you chose, and match up the names of the wires and solder them together. It ends up looking something like this one I made to run my Prizm on a 2003 XRS ECU.
![Circuit component Electronic component Electrical wiring Electronic engineering Asphalt]()
I should note that if you need to pass an emissions test, the 03 XRS ECU is best. It's the only 2zz ECU I've been able to get to set all the emissions monitors, though it should be possible on 00-02 Celica ECU's too. Also, I have all the 1zz and 2zz ECU pinouts, so whatever you need, let me know.
I should note that if you need to pass an emissions test, the 03 XRS ECU is best. It's the only 2zz ECU I've been able to get to set all the emissions monitors, though it should be possible on 00-02 Celica ECU's too. Also, I have all the 1zz and 2zz ECU pinouts, so whatever you need, let me know.
Yep. That way you can leave the entire 1zz harness and fuse box stock so trouble shooting is way easier. All the plugs on the 2zz engine are compatible with the 1zz harness, you just have to add 2 plugs for the lift solenoid and oil control valve.
Woah those trd superchargers are rare, did you ever get it working? Personally I'd run a 5th injector and control it with an Arduino or raspberry pi. Probably with inputs from the tach wire, throttle position sensor, fuel trims, and a wideband.Where we’re you when I was on the hunt to make a TRD sc work without the 5th injector harness and piggy back ecu?
Great work by the way. In older threads like this, there was mention of putting resistors for the vvtl-I to function with the 1zz harness. Did you use any resistors?
As for resistors, I didn't need any. VVTL-I is controlled by a positive wire and a ground wire coming from the ECU, I just wired it directly there. Same with the oil control valve, straight to the OCV pin on the ECU. You also need switched 12v to the IGSW pin, I learned that the hard way.
Using the 2zz harness, you would have to adapt a whole bunch of plugs to get the engine harness to communicate with the body harness. You would also have to construct your own fuse and relay panel or do a ton of custom wiring to get it functional with the Prizm fuse box.So my dad thinks that wiring the ECU like that is a terrible idea is there any particular reason not to use the 2z engine harness? That way it all plugs into the engine and ecu no extra wires or anything? I’d rather keep the 1z harness that way the car functions the same and I don’t have to make a hybrid harness
If you leave the 1zz wiring harness in place, you only have to adapt 4 plugs to connect the 2zz ECU to the existing harness. The existing 1zz wiring harness plugs into the 2zz engine itself just fine, almost every single plug is the same between the engines. If you want to avoid wiring all together, there's a company called Panic Made that sells the ECU and harness adapter for $1,400. If you PM me, I might be able to make the adapter you need for a lot less than that.
That one is perfect. It's from a 2003 Matrix XRS. 6200 lift point and 8250 rev limit. Whatever you do, don't get one that ends in 0Z110. Those have a way higher lift point.
89661-01040 2003 Matrix 6200 lift point no air pump
89661-0Z110 2004 Matrix 6700 lift point & air pump
89661-02C50/89661-02F80 2005 Matrix 6700 lift point, air pump, & immobilizer.
The 05 can be flash tuned, but you would need the immobilizer module, key, and ECU from the same Matrix to get it working in an 8th gen. I'm currently working on getting mine running on the 05 ECU but it's a pain. The 03 Matrix ECU is the best and easiest IMO.
89661-0Z110 2004 Matrix 6700 lift point & air pump
89661-02C50/89661-02F80 2005 Matrix 6700 lift point, air pump, & immobilizer.
The 05 can be flash tuned, but you would need the immobilizer module, key, and ECU from the same Matrix to get it working in an 8th gen. I'm currently working on getting mine running on the 05 ECU but it's a pain. The 03 Matrix ECU is the best and easiest IMO.
All the ECU stuff is super confusing. I've been compiling all the info I have on it as well as ECU pinouts I've put together. When it's done I'll post about it here.
Years ago, someone recommended using the 00-02 Corolla 4 speed auto engine harness for this swap, that way you can repin it to match the Celica GTS ECU and use the extra automatic transmission wires for lift. Then you can just splice the lift plugs into the A/T Wires. I wouldn't really recommend this because it's easy to mix up these wires and they don't really sit well with the rest of the harness. I just ran seperate wires with the lift plugs spliced onto them from the OCV to the ECU. I had to cut a small slit in a rubber grommet to pass them through the firewall, but It all works great.I’ve seen some gnarly wiring over the years. Some owners were putting resistors inline to control and adapt the lift. I think that was using a celica gts ecu with a 1zz harness. Most likely, my memory doesn’t serve me right now.
How did you add the second OCV into the harness? I don’t recall if my xrs had a electrical connector. 😂
I really don't recommend repining a harness like that. It's really easy to mess up a wire because you have to shuffle several wires at once. When you make a jumper/adapter, you can build it 1 wire at a time, and having the original harness in tact makes troubleshooting way easier.
Not really, but you do have to add a couple wires for the OBD port, one for the AC idle up (not 100% sure), one to provide switched 12v to the IGSW pin, and the lift wires.Definitely easier to create a jumper. Though, some repinning required?
There's also some issues with the radiator fans being stuck on. I haven't figured that out yet.
I'm not sure about any of it. I do know that the 8th gen has a standalone controller for the AC, so I believe it's a signal issue, I need to let the ECM know that the air conditioning is running so it'll idle up.With the addition of the ac idle up, I’m wondering if it cancels the switch to close when the ect opens. Would you be able to control it with a resistor inline or is that just for resistance and preventing the circuit from surging itself.
Yeah, there's a fair bit of crossover, espically with it running on a 9th gen ECU. The thing that's nice about the 8th is that lots of stuff is independent of the ECU, like the AC controller, and the ABS controller.I keep forgetting it’s a gen 8 chassis.
For your swap, you'll need male ECU plugs from a Matrix and female side for a 2000-2002 Corolla/Prizm 5 speed. I just checked on eBay and can't find the male Matrix plugs, so a junkyard is going to be your best bet. The best donor car for that is going to be an 03-04 Toyota Matrix or Pontiac Vibe. You'll need a wiring depin tool to move a couple wires around for lift. You can get those on Amazon for super cheap. You can also use a sewing needle if you're careful.
Once you get the 1zz out, and the 2zz in, you can lay the wiring harness on top of the engine in roughly the right spot, and everything will line up just fine. It doesn't look like it will, but it does. When you get to the point where you need to put the vacuum lines on, I'll send you detailed pictures of my setup.Well i started tearing into the car today , and I did not realize just how many wires and hoses and THINGS there are and I just don’t know what they are and I labeled some things to kinda remember where they go but after comparing the intake manifold on the 2zz to the 1zz and seeing that connections are in different spots I’ve changed tactics to unplug as many things as possible and I feel like this is a terrible idea but I want to get the 2z in and then i don’t think it will be too hard to figure out hoses and plugs
One thing you have to piece together is the power steering pump. For that, set the 1zz and 2zz PS pumps next to each other on a workbench and look at the fittings. Theres a big bolt on both pumps and if you unbolt both, the fittings for each pump will come off and you'll be able to put the 1zz power steering pump fitting on the 2zz pump. That way you'll be able to retain all the power steering stuff without any custom hoses.
What's your AC setup like? Do you plan on keeping the AC?
Yeah that's an option. You would need a PS delete pulley (I think MWR sells them), a hose, and an EHPS pump from a Spyder. I'd like to go that route so I can switch off PS when I want. I do think it's easier to just swap the fittings though, it's pretty self explanatory when both pumps are sitting next to each other. I can send a photo of my PS setup if needed.Maybe go electric power steering instead of belt driven.
I just got my AC put together and working about a month ago. I used washers and longer bolts to space the compressor out from the engine so the AC line will clear the thermostat housing. You also need to use an accessory drive belt that's a bit longer. One for for a 90's V6 Camaro fits perfect.Soooo the 2z that I got , doesn’t have a power steering pump on it so I guess I’m adding that to the list , and yeah I’m hoping to keep my A/C I had my fingers crossed the compressor was just gonna bolt on to the new engine , I’m trying to not crack a line but we shall see
Edit: 1993 Camaro 3.4 liter V6. The belt came in a couple different sizes depending on engine options, but the one you're after has an "effective length" of about 77 inches. Parts store brand was the cheapest, that's what I'm running.
IMO it's best to pull the engine and transmission together, then pull the bell housing bolts once the engine is out of the engine bay.
Male plugs from an 03-04 Matrix XRS are ideal, but plugs from an 03-04 Matrix 1zz (auto or manual, doesn't matter) will work too with a tiny bit of repining.
Good job getting everything out without breaking anything. That's a feat on a car this old.
Good job getting everything out without breaking anything. That's a feat on a car this old.
The 1zz header with the 2zz flange might not flow quite as well as a dedicated 2zz swap header (like MWR or little rocket) but it's just fine. I'm running the MWR header and a 2.5 inch exhaust that a shop fabbed up and it flows just fine. I'm also running a used Spyder midpipe that a local welding shop modified a bit to fit.
That would be the best option, but unfortunately the PPE headers won't fit. The Celica/Corolla/Matrix ones all go back at the wrong angle. The Spyder 2zz swap one comes closest, but you'd need some welding skills to make it fit.If you can afford it, I’d go ppe.
1 - 20 of 93 Posts
Toyota Nation Forum
ToyotaNation Forum is a community dedicated to all Toyota models. Come discuss the Camry, Tacoma, Highlander, 4Runner, Rav4 and more!
Full Forum Listing
Top Contributors this Month
View All
sdspeed
506 Replies
1990Toyota
405 Replies
93celicaconv
211 Replies
