How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Skyvisions Your Own Question

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13057
Experience:  Toyota Master Diagnostic
8257649
Type Your Toyota Question Here...
Skyvisions is online now
A new question is answered every 9 seconds

Toyota UZJ100R: 100series petrol trouble code- B2799 immob

Resolved Question:

100series petrol trouble code- B2799 immob fualt. What is the code referring to?
Submitted: 2 years ago.
Category: Toyota
Expert:  Skyvisions replied 2 years ago.

Thank you for choosing JustAnswer and allowing me to help you resolve your Toyota questions!

 

The only way you can get this code set in the computer is if the ECM does not see communication from the immobilizer transponder key ECU. Did you get the coil/transponder mechanism around the ignition lock cylinder in place correctly and plugged in? Next you need to make sure that the transponder ECU box is plugged in securely. Unless the wires got damaged between the transponder ECU and the engine control ECM there may be a fault in the transponder ECU. Here in the USA was a technical service bulletin dealing with a problem from 2007 two 2008 in this unit. Do you have the complete vehicle identification number available? I'm trying to locate something that would be similar to the model that we used here in the USA.

Customer: replied 2 years ago.
thanks for the prompt return. As far as I can tell the key /transponder is all plugged in and in it's correct position. VIN= JTEHT09J905506270.
Expert:  Skyvisions replied 2 years ago.
This is basically the same system that is used here in the 2004 Land Cruiser. The transponder ECU is located behind instrument panel above the engine control computer. Did you located and verify that the connections and wires are good? Typically whenever the transponder key amplifier which is the coil mechanism that goes around the ignition lock cylinder and collar is damaged or disconnected it will set a different code. When you insert the key into the ignition lock cylinder does the security light go out? This is the little red light with the picture of the key in the car.
Customer: replied 2 years ago.
I know the symbol you are talking about, but I can't find it. I can make out the symbols on the instrument cluster and it doesn't apperar to be there. The only one I can make out on the centre console facia is 'air bag'. If it is there and I can't make it out, it is obviously not illuminating. Have the dash 1/2 back out and still have found nothing. Have checked wires from barrel security they are OK. Unit is plugged in have unplugged and replugged. Is there a way to check the transponder ECU, i.e power in -out etc.? Obviously if the light is not illuminating you would think a power problem. (maybe earth?) will check earth shortly. Can you identify the pins on ECM which the ECU for security feed? Is it Bypassable?
Customer: replied 2 years ago.
It seems I've been barking up the wrong tree. The unit I thought was security upon removal proved to be ABS. Now I'm wondering where the security unit is! You said above the ECM have not yet identified it.
Customer: replied 2 years ago.
I know you are USA and things will be different there. In the Aussie version (RHD) the control units above / behind the steering column are Hazards/ indicators (flashers) and ABS. On the LHS behind the glove box is engine control module- above that is passenger side air bag. To the left is central locking control( which works) and transmission relay ( on a manual I don't know why). Cannot identify security cotrol unit! Can you possibly point me in the right direction? p.s. there are no blown fuses, I have contacted the owner who tells me the security light is in the centre console display.
Expert:  Skyvisions replied 2 years ago.

Sorry for the delay the time difference is a real pain. I just got online and I will see if I can find a picture of the transponder ECU. Click the links below and save. Let me know if this helps. Keep in mind this is all for left hand drive but it should be the same on the right side just flip flop the location LINK1 LINK2 LINK3

There has to be an issue in the connetor between the two or the transponder ECU is bad.

Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13057
Experience: Toyota Master Diagnostic
Skyvisions and other Toyota Specialists are ready to help you
Customer: replied 2 years ago.
excellent ! will see what I can find. Location must be different though. Once again, thnks.
Expert:  Skyvisions replied 2 years ago.
You are welcome.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine