Toyota IMMO 93LC66.

[catalinux]

Hi all, can someone please tell me in short steps what I need to do in case a Prius Gen 1 doesn't start, and give on tester - B2799 Engine immobilizer System DTC. I have now ECU, IMMO 89780-47010, inside 93LC66, and also the main Engine ECU 89661-47040 and 2 keys one master and a slave. Tried everything apart from re-writting ECU, but as I said I don't know how to begin, or where to begin. The master Key is from one car that matches the main Engine ECU, the other key is from another car, and the IMMO is from another car, logically the car doesn't want to start.
So if anyoane has enough patience to give som help it would be greatly appreciated.
Thanks,

[912secured]

Prius gen one if you have not messed it up too much t300 does programm but some times you get abs light on and will not turn off. If you have a cheap j2534 it will fix it after using t300 if you do not have soft to calc even old v5 will work to take down abs problem. Told people winhex could snag it. Some one released softfor 7,10 that you run when on pass screen and it gives you the code its dongle protected get one good one you can find again in same spot (most of the time), like texas rangers and original way of finding activation for soft

Search google for advance diagnostic usa pdf and it gives advice but says do not programm with old soft, does not say why but it is the abs light.

My prius flash only time used was from blue chip some one might have exact code you need for virgin ecu.

[siyadk]

Short obd pin 4 and 13 for 35 mins with ignition on.
Then use the another car key to start the car

[catalinux]

ok, thanks 912, but i have now a Wellon VP290 in which I can read & write the dump, but I don't know what I need to do next after I can find a virgin dump for my chip, and what to do with the 2 keys that I have. For siyadk you mean TC and CG from the OBD, but it wouldn't start, still B2799 error code on my scanner.
Thanks

[gwee]

Post immo dump.

[catalinux]

here is the dump, but didn't told me what to do with the keys..
Thank you

[gwee]

Post 4C tiris data.

[catalinux]

Post 4C tiris data.

Well, here is the catch, I don't know how to do it, I'm new in this, and belive that I need another special tool to read the tiris data. Am I wright?

[Bllinda]

Post 4C tiris data.Inmobox damp has three pre-programmed keys

[catalinux]

Inmobox damp has three pre-programmed keys

What you're telling me is that I need to read the keys so I can figure the code so it can be re-written. What type of scanner do you recommend in reading the 4c tiris code from the keys?

[siyadk]

U need a tool like clone ad90 or zedbull. Then read the key. U will get tiris data of key
Post tht data here
Someone will add tht key to ur dump
After that write ur new dump to eeprom
Then the car will start with key you read

[catalinux]

U need a tool like clone ad90 or zedbull. Then read the key. U will get tiris data of key
Post tht data here
Someone will add tht key to ur dump
After that write ur new dump to eeprom
Then the car will start with key you read
Still, I have a question, if i can get a virgin dump of a Prius from someone, when I insert the key that I have, will not get the code from the key and learn itself ?
Rest is clearly explained and understood (thanks siyadk)

[keygargoil]

Hi all, can someone please tell me in short steps what I need to do in case a Prius Gen 1 doesn't start, and give on tester - B2799 Engine immobilizer System DTC. I have now ECU, IMMO 89780-47010, inside 93LC66, and also the main Engine ECU 89661-47040 and 2 keys one master and a slave. Tried everything apart from re-writting ECU, but as I said I don't know how to begin, or where to begin. The master Key is from one car that matches the main Engine ECU, the other key is from another car, and the IMMO is from another car, logically the car doesn't want to start.
So if anyoane has enough patience to give som help it would be greatly appreciated.
Thanks,

here ready to se

[catalinux]

I will write the dump, do you have any kind of instruction regarding the initialization of the key after the dump is written? The 35 minute TC & CG short on OBD?...Thanks

[andTo86]

Hey could you post or PM the password for the archive?
Thanks in advance!

[keygargoil]

i dont keep them files are made for the person requesting help

[gwee]

Hey could you post or PM the password for the archive?
Thanks in advance!

Come to DK to get password ??? Crack it yourself RAR is not difficult, will only take a year or two :roflmao::roflmao:

[andTo86]

Sorry.. I'm new here, but why would you do that for something generic like a virgin dump?

[gwee]

Sorry.. I'm new here, but why would you do that for something generic like a virgin dump?

since is so generic, why you need it??

if u have a problem, we will try to help, post original dump.

we don't know you !!! you can be a car thief, you can be a dumps seller, you can be anyone lol lol

This is how it work here: post something useful, try to help others and you will get help instantly when needed :)

[andTo86]

Ok sorry.. I just need a virgin dump for a 2001 prius, immobilizer number is 89780 - 47010, should be 93lc66. Lost all keys, I have one replacement that I need to program but no way to read the code from the key. I have an eeprom burner, but I don't have the immo yet - The car came without keys and immo (assuming someone swiped it for another car). I'm trying to track down the file while I wait for it to arrive.

Should I have just created a new thread instead of posting here?

[deondti]

Hi all, can someone please tell me in short steps what I need to do in case a Prius Gen 1 doesn't start, and give on tester - B2799 Engine immobilizer System DTC. I have now ECU, IMMO 89780-47010, inside 93LC66, and also the main Engine ECU 89661-47040 and 2 keys one master and a slave. Tried everything apart from re-writting ECU, but as I said I don't know how to begin, or where to begin. The master Key is from one car that matches the main Engine ECU, the other key is from another car, and the IMMO is from another car, logically the car doesn't want to start.
So if anyoane has enough patience to give som help it would be greatly appreciated.
Thanks,

In short how it works you asked... Toyotas in general I will explain

The key needs to be coded to the IMMO box.(if it has seperate immo box)

White plug on immo is commonly known as dot-code (look at the key<will have a dot) you can add the key manually into the dump if you had a key reader like Zed-Bull but is tricky. You do get a virgin dump then the key auto codes on first two keys inserted , You can only do 1 if you want to.

Black/grey plug on immo is commonly known as G-Code , even if you had a virgin dump you would need equipment to code the key and minimum 3 keys needed, I read the dump and create a transponder using the Zed-bull.

Make sure the security light goes out to confirm key coding.....

ONCE key is coded to Immo you short the two pins 4&13 on the OBDII plug for 30mins < you will notice the engine and ABS light flashing if fitted to alighn the Engine ECU with the IMMO.

There is also a valeo key and some keys coded directly to the Engine Ecu like the Yaris and corolla but we not going into that today.

I hope this helps

[andTo86]

Thanks for the reply. I got the immo box a few days ago, made a soic to dip adapter, desoldered the eeprom and read it. I took a look at a few non-virgin dumps and the virginized code that people posted in response; it appears that the immo stores several copies of all of the key codes in the first half of the eeprom, and the second half appears to be a couple of bytes specific to the IMMO that it came from (not generic for all identical immo boxes, which answers my questions about passwords on the files ;). Comparing the originals and virginized files I could find, it looks like all they are doing is wiping out the keys and leaving the second half alone. I couldn't identify a checksum anywhere, so I blanked the keys out of my dump and put it back in the car.

I have the toyota immo replacement procedure, but it doesn't align with what I'm reading everywhere else. Toyota says to replace the immo, you need at least one new key and a virgin immo, and you just put the key in, turn it on and wait 30 minutes before "starting" the car (doesn't say anything about jumping 4&13 as everyone else says). Both my HV battery and 12v batt are dead, so I'm powering it off of a booster pack for now. After 30 minutes, when I go to "start", something big turns on and the power just drops and everything goes dead. I have a techstream cable, so I can read codes; it has an immo code set, 27xx something - I suspect it's because of the power dropping, but I can't play with it for another week or so.

[catalinux]

If you're HV battery is dead, then you will not be able to start the car. Watch the indicator immo light (red one) that is flashing along the clock, if it does then you have a immo problem, if it doesn't then you have a HV battery problem. I have an 2001 Prius and I know the car very well beacuse i had the same problem.

[andTo86]

Yeah I know that it won't "start" in the traditional sense; it should close the smaller relays to test for chassis leakage on the HV side, and then close the SMR to power the HV side / start if the battery is low. The immo light is flashing, not sure if it should be doing that during the 30 minute wait for the ECM to synchronize to the keys that should have been learned from the immo box. I may have a bad key, bad immo box, an issue with my homebrew virginized .bin, or it may just be failing because the power drops out when I turn it to start. I think I just need to make an inductive pickup loop and scope out the communications between the key and the immo and go from there.

[keygargoil]

these hybrid cars need power in the main battery and also in the hybrid can you get it chatged where you are as these batteries are ???

[andTo86]

I think I have a bad replacement key; there are two holes in the immo pickup housing that have metal plates behind them (test points). I can scope those pins and see the RF as the immo tries to read the key, but it doesn't look like the key is modulating the RF back to the immo, so I ordered a few keys from different suppliers. I'm pretty sure my HV battery is done; the car had sat for some time and only a handful of the modules had charge left. Some were zero. I built a cell zapper and an inductive boost converter to see if I could at least get enough charge into it to start, but the cells are all too far gone. I know I can get a rebuilt battery with gen2 cells for about $1200 + core charge, but I want this immo sorted out before I drop that kind of money into the car. I have a stack of lead acid batteries that will get me close to the 273 volts that I need, and I know of at least one person that has built a voltage divider to trick the battery ECM into thinking it has a good bank of nicd. I'm just waiting on a few odds and ends at this point.

THanks!

[catalinux]

Hi,
just buy a Second Hand HV battery from a Prius 2 or 3 for 500 Euros, it has 28 modules, but may be you'll find 10 modules from the old battery that has som juice left in it, and therw you go, the car starts if you don't have Immo issues.

[bcat]

Hello,
I've got exactly the same issue:
All keys lost for my Toyota Prius 1st gen. Immobilizer 89780-47010.
Its circuit board has three 8-pin chips that could look like the 93LC66 EEPROM. Is it the one in the top left corner on the picture?

I got a new transponder key from Toyota that matches my locks. Now I would like to get the car starting again. I would use an EEPROM reading / writing service, I do not have a programmer on my own. Can somebody help? A virgin dump would be the easiest way, of course.

I will also appreciate hints on how to install the immobilizer back when it's finished. I have used this article (http://artsautomotive.com/publications/7-hybrid/108-prius-1st-gen-rfid-lost-all-keys/) for releasing the immobilizer, which was already extremely unwieldy. Right now, I cannot imagine how I could reconnect the immobilizer back the same way. Is there any way to remove the left part of the dashboard above the immobilizer instead? I have already removed 2 screws holding it, but there is at least an other one in the top left corner which I cannot access.

[teeone]

VERY USEFUL THANKS ALL

[Johnner]

Mate,You're a bit late,Gwee has been escorted from the building....and please don't ask here how to crack RAR Passwords.

Thank you...

[bcat]

Why Gwee??
It was keygargoil who posted the virgin dump, as far as I see here. What's about him? I wrote him a PM, still got no reply.