Hi guys; I have recently bought an OBDII scanner from eBay, as members told me, i can just do some basic operations like reading the error codes and some monitoring for the car systems, my question is, Can i send prius-specific commands to the car by the OBD cable? i have the anti-theft system needs to be activated by toyota HHT device and its not available where i live,is it possible to send the command to activate the alarm by the OBD cable? and if it is possible, what is the command with parameters that should activate the anti-theft system?
If your OBD2 scanner is PC connected, you can send commands by using a terminal application. You will need the commands for the unit you purchased, as well as the specific command for the HHT, which I do not know. Which OBD2 scanner did you purchase?
I bought OBDII CAN BUS SCANNER USB V1.3 [FONT=Arial, Helvetica, sans-serif]Multi-Protocol Support: [FONT=宋体] SAE J1850 PWM (41.6 kbaud)[FONT=宋体] SAE J1850 VPW (10.4 kbaud)[FONT=宋体][/FONT] ISO 9141-2 (5 baud init, 10.4 kbaud)[FONT=宋体][/FONT] ISO 14230-4 KWP (5 baud init, 10.4 kbaud)[FONT=宋体][/FONT] ISO 14230-4 KWP (fast init, 10.4 kbaud)[FONT=宋体][/FONT] ISO 15765-4 CAN (11 bit ID, 500 kbaud)[FONT=宋体][/FONT] ISO 15765-4 CAN (29 bit ID, 500 kbaud)[FONT=宋体][/FONT] ISO 15765-4 CAN (11 bit ID, 250 kbaud)[FONT=宋体][/FONT] ISO 15765-4 CAN (29 bit ID, 250 kbaud)[FONT=宋体][/FONT] SAE J1939[/FONT][/FONT][/FONT] its doing very well, i think the commands is vehicle-specific so i need to know the command that toyota HHT send to activate the anti-theft e.g, is that applicable???
The important one that is missing is KWP (fast init, 9.6 kbaud). The Prius uses it for option setup on the Gen2. The Gen3 uses CAN for options, but still uses 9.6 KWP for the TPMS.
:-( does that mean i cant set any options? does the KWP comes only with the professional expensive cables? or it comes with standard OBDII cables? and also the [FONT=Arial, Helvetica, sans-serif] ISO 14230-4 KWP (fast init, 10.4 kbaud) does not work for me right? [/FONT]
Check out the treads that talk about the ELM 327. The genuine ELM is a custom programmed MicroChip PIC computer that supports all of the protocols that you mentioned. The chip itself is available for about $30. When it first came out, they didn't set the copy protection on it, which allowed other people to copy the code. Since the PIC computer chip costs maybe $5, this allowed other vendors to build clone copies and sell the entire package for less than the original chip. So everybody except the original developers get a deal on the package, right? Not exactly. There have been a number of improvements on the original, and the copy protection mechanisms are turned on. So if you want a version that works the best, you have to get a device with the $30 chip in it. Or I suppose you could get a $30 device, separately purchase a genuine ELM 327 chip (another $30), and solder in the new chip. Or you could purchase one properly set up for $75+. I've never tested a genuine ELM device, so I can't tell you if it works with the Prius or not. I've certainly tried to make my $30 clone work, and failed. The $6000 devices that Toyota dealerships use do work. There's no technical reason that a $30 device like the clone ELMs couldn't be made to work with the Prius. The problem is that the people who know how to do it want a lot more money for their services.
thanks RobH, that is too much information form me i'll keep on monitoring and reading error codes until something rises.
There are plenty of ELM 327 devices on EBAY. I have on I purchased there. I use my AutoEnginuity with the Toyota module for $400.00 Here is what it does: Toyota Engine Module List
