Heres a video on how to clear the crash data from the airbag computer and reprogram it with clean virgin data.
Airbag Crash Data Reset Software Download Step 1Add Tip Ask Question Comment Download Step 1: Introduction The airbag computer controls the supplemental restraint system in your vehicle, including the airbag sensors, inflators and seat belt pretensioners.It also acts as a black box when you get into a major collision that involved airbag deployment.Airbag Crash Data Reset Software Code Inside ThatAnd your airbags deploy: Add Tip Ask Question Comment Download Step 2: Airbag Computers Cannot Be Reused Well if you decide to rebuild the vehicle and replace the airbags: You need to replace the SRS computer, since it has a hard code inside that cant be erased and youll be stuck with an airbag light on: You wont even be able to access the SRS computer using Toyotas techstream software either: Add Tip Ask Question Comment Download Step 3: Remove the Airbag Computer The airbag computer is located underneath the dashboard.
Airbag Crash Data Reset Software How To Clear TheDisconnect battery before working on SRS system: Add Tip Ask Question Comment Download Step 4: Disasemble the Airbag Computer Airbag computer removed: Open up the computer: Were looking for this 8 pin SMD EEPROM chip here that stores the crash data, it says L56R on it: Add Tip Ask Question Comment Download Step 5: Solder and Hookup to an EEPROM Reader Solder some 32 gauge hookup wire to connect it to the serial port EEPROM reader: I built a little EEPROM reader using some resistors and diodes: Heres the setup, with the airbag computer EEPROM going to the reader, and then the reader going to the serial port directly on a legacy Pentium 4 computer. You can also purchase USB EEPROM readers: Add Tip Ask Question Comment Download Step 6: Analyze Crash Data Then I used PonyProg software which is a serial device programmer to read from the EEPROM chip: Heres what the crash data looks like: From a clean, uncrashed Corolla, I dumped the information from its SRS computer and it looks like this: Comparing the two, you can see a lot of data values have changed. So now Im going to replace all the values from the crashed chip with those from the virgin chip and rewrite it to the computer to clear the hard code. Then Ill replace it into the vehicle: Add Tip Ask Question Comment Download Step 7: Replace the Airbag Computer So now Im going to replace all the values from the crashed chip with those from the virgin chip and rewrite it to the computer to clear the hard code. Then Ill replace it into the vehicle: Add Tip Ask Question Comment Download Step 8: Test to Make Sure It Works The SRS light should go out within 6 seconds if everything is functioning normally. I also double checked it with Toyotas techstream software and there arent any codes or faults found. Plug a resistor in to every connector for each air bag and seat belt and if it is reset correctly the dash airbag light should go out and have no codes. If not reset properly and the module wants to deploy an airbag or belt the resistor will fail. The duck was a nice touch.:-0 How long did it take you to find out it was that eprom that was the problem. I did some research and found that there are services out there that clear the info from the SRS computer. I have previous experience working with EEPROMs so as soon as I opened up that motherboard I knew where to head. Terms of Service Privacy Statement Privacy settings Legal Notices Trademarks.
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