06YarisRS's 2ZR-FE Swap 5-Door Hatchback (Automatic Transmission)

[atomic_hoji]

Originally Posted by CrankyOldMan

One of us! One of us! One of us!

Welcome to the cult--er, club! Looking forward to your build.

LOL +1

Originally Posted by 06YarisRS

Thanks gentlemen! To pick up on a few points... Adam, thanks for the advice on the wiring diagrams. I will try to find those. You mention body harness? I thought that all I was concerned with was the engine harness. ...

From my research, the xD came in both auto and manual transmission. ...

I don't want to pay ~$600.00 for a harness, so just trying to find a used one but all eBay listings use the 648.SC1xx format.

There is a harness and engine from a 2012 xD that I'm looking at and it is automatic. It is immobilizer so I can't use the ecu, but can I use the harness?

...

Yes.. Two harnesses plug into the ECM - one for the engine, which is basically a pile of wiring that 'drapes' over the engine and routes to all the sensors, etc.. and the bundle goes to a long, rectangular connector at the ECM. Then there's the body harness, which is how the ECM talks to the rest of the car, that routes around the engine bay and into the interior through a grommet up by the brake cylinder; this one has a smaller, square/rectangular connector at the ECM. You need the engine one to match your 2ZR (preferably with the engine and intact) and keep the body harness on your Yaris. <-- not being pedantic, just clear how I use the wording between the two... lol

Definitely try to get the engine harness associated with the engine, even if it needs a couple of connectors swapped those are $12-$20 or so each - just remember to sort it out and order once! The $22 shipping on a $16 connector hurts when you do it twice. lol A bit of bravery for soldering or crimping may be required, but given you repainted your Yaris, I suspect you're up for the task.

I just double checked, but on my 3rd gen., and I imagine the 2nd gen. as the key and chip ECU are inside the car, the immobilizer wiring is on the body harness, not the engine harness. So, even if that 2ZR from the xD was immobilizer equipped the engine harness won't have any of the immobilizer wiring... You are likely plug and play to an xD ECM (*ECM that matches MT/autobox) Where I ran into trouble is the connectors that interfaced from the engine harness to the junction box (J/B) - i.e. power and grounds, etc.. to the main J/B. That's where I ordered the Toyota connector and re-pinned to match the accepting connector in the main J/B on the Yaris.

If that ECM you scored is an autobox and non-immobilizer I think you're headed down the right path!

When you get the wiring diagrams, etc.. keep us posted, I'm sure everyone will be happy to clarify / peer check things for you.

-- Adam

[06YarisRS]

Originally Posted by atomic_hoji

LOL +1



Yes.. Two harnesses plug into the ECM - one for the engine, which is basically a pile of wiring that 'drapes' over the engine and routes to all the sensors, etc.. and the bundle goes to a long, rectangular connector at the ECM. Then there's the body harness, which is how the ECM talks to the rest of the car, that routes around the engine bay and into the interior through a grommet up by the brake cylinder; this one has a smaller, square/rectangular connector at the ECM. You need the engine one to match your 2ZR (preferably with the engine and intact) and keep the body harness on your Yaris. <-- not being pedantic, just clear how I use the wording between the two... lol

Definitely try to get the engine harness associated with the engine, even if it needs a couple of connectors swapped those are $12-$20 or so each - just remember to sort it out and order once! The $22 shipping on a $16 connector hurts when you do it twice. lol A bit of bravery for soldering or crimping may be required, but given you repainted your Yaris, I suspect you're up for the task.

I just double checked, but on my 3rd gen., and I imagine the 2nd gen. as the key and chip ECU are inside the car, the immobilizer wiring is on the body harness, not the engine harness. So, even if that 2ZR from the xD was immobilizer equipped the engine harness won't have any of the immobilizer wiring... You are likely plug and play to an xD ECM (*ECM that matches MT/autobox) Where I ran into trouble is the connectors that interfaced from the engine harness to the junction box (J/B) - i.e. power and grounds, etc.. to the main J/B. That's where I ordered the Toyota connector and re-pinned to match the accepting connector in the main J/B on the Yaris.

If that ECM you scored is an autobox and non-immobilizer I think you're headed down the right path!

When you get the wiring diagrams, etc.. keep us posted, I'm sure everyone will be happy to clarify / peer check things for you.

-- Adam

Thanks Adam. A tiny setback...the seller listing the Scion xD engine informs me that he sold the harness that goes with that 2012 engine. Now I have to decide if I want that xD engine or the 2011 Corolla engine (which has the throttlebody but would need the timing cover bracket). Either way, this puts me in a position of having to decide which xD harness to buy. There are a couple available that are from automatics. I think I just need to buy one from an automatic and move forward. If I'm understanding you correctly, the immobilizer should not be an issue as its wiring in the BCM harness. Fact is, the number of available used harnesses is really limited and I've already seen a couple get sold.

I've just been over to TIS and watched parts of the tutorial. I guessing the EWD section in the library would contain what I'm looking for. This is new to me as the only wiring diagrams I've ever used were for such things as stereo installs. Would I be looking for pinout diagrams of the ECU. And, I assume there would be pinout diagrams for each plug on the harness?

And, yes, the ECU I bought from an 08 xD is for auto and non-immobilizer.