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post #21 of 22 (permalink) Old 02-15-2006, 04:23 PM
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Dan, I am getting some clarity as to what you are saying. However, I do not consider the tools mentioned to be "generic." Vetronix, maker of the GM special tools (Tech 1 and Tech 2) is in a class by itself. This was easier to discuss years ago. Simplistically, the advanced "special" tools had bi-directional communications capability. Then there was the advent of the special cartridge that had all the "keys" to allow programming of authorized code. With Class 2 and the other newer protocols to address bus congestion and EMI most all communications is bi-directional versus broadcast remote.

What I am trying to express here is that you cannot go out and purchase a $100 scan tool and reprogram your car. You need authentic software from the manufacturer and you need a special communications tool which is capable of transferring authorized software one has obtained into the vehicle using the required protocols. While there is more than one tool that can accomplish this, the number is few, they are very expensive, and the tools themselves and/or the special cartridges/adaptors to reprogram ECU's are often restricted to dealers or licensed technicians. Bottom line is that the average person cannot go purchase a tool, hack into the car and reprogram it. As you stated, with a legit file one could program an ECU. The concern remains that many ECUs are generic and putting a legit file for the wrong application into a vehicle is a recipe for disaster. The authorized special tools check VIN compatibility and poll other devices to ensure they have compatible software also (such as also updating transmission if that is also required with a PCM update).

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post #22 of 22 (permalink) Old 02-16-2006, 10:18 AM
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Granted, most programmers are not cheap, but they ARE generic.

As per Techinfo: https://techinfo.toyota.com/public/main ... j2534.html (note the J2534 specification in the URL) the following devices are certified by Toyota:

CarDAQ-Plus from Drew Technologies $1500
Passthru+ XS from Actia $1070
universal programmer from Ease can't find price.
Pass Thru Pro from Snap-On (looks like a repackaged Actia) $$1,600
BSE-2534 Global Programmer from Blue Streak can't find price.

You can look for other J3534 devices or adapters for your laptop.

From Techinfo:

Toyota/Scion/Lexus ECMs that can be reprogrammed with a scantool can also be reprogrammed using a Toyota validated J2534-1 interface. Vehicle recalibration requires the use of the following:

Toyota validated J2534 interface
Toyota Calibration Update Wizard software (available on calibration CD)
Personal Computer running Microsoft Windows 2000/XP or later operating system
Calibration CD (00456-REPRG-001)

Then there's the mongoose at $200 which is j2534 and j2534-1 compatable: http://www.drewtech.com/products/mongoose.html
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