When I got my "new" 91 240 sedan the SRS bulb was removed by PO When I replaced the bulb, it came on. I used info from the posts to read out the codes and replaced the air bag sensor and power supply under the front seat with one from ebay that is from a running 240 with no SRS light on. When I first started the engine, the SRS light was off, but immediately came on when I restarted the car. The SRS light goes out when I touch the wire from the test port behind the SRS plate to ground, but no codes flash. I have also tried to reset the light thru the test port, but so far no luck. The only thing I know yet to try is to disconnect the negative terminal for 1/2 hour, drive, and repeat 3 times or check the reel behind the wheel. The horn doesn't work and PO said she had someone look at it, but it still doesn't work. Any suggestions appreciated.