2nd Gen Prius SKS Diagrams

Anton I've done a whole bunch of work in Apex North Carolina You can come down here to my house in Orange county and there's a whole SKS car that's completely intact from what you want all the SKS computers door buttons switches everything sitting in the car untouched the door panels are off the car it's ready for you to come play with and have at it because what you're trying to do is an electrical nightmare but yeah it's doable but you want to put all your time and energy into something like that wow that is a strange one. But just get in touch through Messenger or whatever I'm on Borland road and 27243 I'm 40 minutes from you at best The SKS car I believe I have maybe one remote left that goes with that system all the serial numbers and labels are intact etc so on and so forth I am trying to get this car to the junkyard say after the new year so make a plan or don't I guess Good luck.

 

toyota-service-information-and-where-to-find-it

 

Yes unfortunately the old days of three full repair manuals over 200 pages each is no longer everything is strictly online and strictly digital Man that was really something back in the day to have the Toyota Supra set of manuals still have them today and Ma 67 cars . Today you get nothing but tablet

 

A) :

Buy a donor SKS car and bring it to your house.

Completely remove the interiors from both cars.

Swap parts as needed from the SKS car to yours until it all works.

I would think that you would need major wiring harnesses, including main body, dash, front doors and tailgate. At least the hybrid control and certification ecu's (cert ecu is mounted on the front of the HVAC housing facing the firewall - have to pull the instrument panel). Possibly BCM. Also need functional SKS fobs (or the ability to program new ones - "reseed" the cert ecu). All transponders and antennae and other bits.

B) :

Buy a SKS car and drive that one.

Posted via the PriusChat mobile app.

 

One ECU (oscillator) inside each front door. Front door handles.
One ECU ("room oscillator") inside the center console
One ECU in the spare tire compartment
Antenna inside the rear bumper cover
Hatch trim panel above license plate
Certification ECU, located just under the dashboard safety pad on the driver side (NOT on the front of the HVAC housing facing the firewall)
Door control receiver ECU, driver side C-pillar (in non SKS cars, this ECU is a different part and the two are not compatible)

2 ECUs may need to be reconfigured or replaced, not sure:
Body ECU
Transponder Key ECU/ID Code Box (mounted on the front of the HVAC housing facing the firewall)

Wiring harnesses that are missing the wiring for the SKS components:
- Front doors
- Dashboard (instrument panel wire)
- Hatch door
The main body harness DOES have the SKS wiring included.

In some cases it may be easier to add new wiring rather than replace the harness.

With minor exceptions the entire interior will need to be disassembled, probably including the air conditioner.

 

To be precise, these are not ECUs. More akin to radio transmitters. As you noted in parentheses, these are called oscillators and are named as such in the parts diagram.

 

He got almost every bit of this today took it out of the car there may be one or two pieces he might have forgotten I do not know yet We removed all the door harnesses from the two front doors all the oscillators and all of that so you're saying the white box with the magenta writing in the left side of the trunk when standing in front of the trunk needs to go to I think it says 134 megahertz on it I was wondering about that I thought that went to the TPMS sensors or something but I didn't look at any diagram I just know the one you're talking about if that's it just ahead of the battery safety plug correct? He's going to probably have to come back when he starts making the swap to look at stuff My idea why not just buy a proxy alarm system like Clifford and others made. Some of those things came with really nice remotes and all of that nonsense for 250 bucks or something only about four or five connections need be made especially to a car that already has sensors that you can probably speak to and what have you but hey some people have plenty of time.

 

Thanks so much for this post Anton_B. It was super helpful to have this service info and wiring diagrams.

 

Anton, I recently posted to the Gen 3 group a similar question about the SKS system.

I thought I'd echo that query here because the topics are similar.

Toyota offered the Gen 3 (at least the spartan 2010 model) with a simplified SKS system that sensed the key's presence at only the driver's door. If you approached the vehicle from the passenger door or tailgate area no unlocking occurred.

More expensive Gen 3 versions had the full 3 door sensing SKS system that Gen 2 owners enjoyed.

I got spoiled by the 3 door SKS system in my 2009 Prius and was seriously inconvenienced when I purchased a 2010 with only single door SKS.

If I purchase extra Gen 3 SKS transceivers at a junkyard, are the mating electrical connectors for these transceivers present on the Gen 3 wire harness?

Is a Techstream tool necessary to tell my vehicle that it has been upgraded with 3 SKS transceivers?

 

These two key questions cannot be answered by Gen 2ers. They are Gen 3 specific questions.

 

I can tell you a regular or base generation 2 without SKS if you pull the door panels and whatnot off of that car you're complete door harnesses are completely different from the SKS equipped car I know this as a fact I have never seen a generation 3 Spartan model I don't even know what that means I guess that's a stripped base and apparently you're saying you have SKS receiving capability only on the driver's door.? Then that would mean the sensors and whatnot are missing from what the passenger door The outside sensors on the car that would be what near the trunk and wherever else they are that you wouldn't get on the Spartan model there's a few of them around the car I would venture to say and guess that the wiring harness won't even be ready for those SKS related sensors given what they did with the 2. But this does interest me I'll be out at the junkyard the next few days where there's quite a few of these cars the generation 3s with door panels off and all of it so I'll be able to look real good but I do know when the previous series of car the generation 2 the base and the SKS cars the wiring harnesses in the trunk the hatch the doors under the dash top the SKS black box is not present nor is it's wiring in the base car with just remote unlocking panic button that sort of thing to put that in a base car man is going to be a big project I know somebody who's trying to figure it out right now and I'm like Man just get another chassis that's SKS already We can get them for near nothing move your stuff to that off you go but some of these electronics guys they got lots of time on their hands I guess.