B1900 srs code

[yakovenkooleg]

I unbuckled both ends ( from srs ecu and seat belt) and ran voltage through each wire individually

[CTScott]

Originally Posted by yakovenkooleg

I unbuckled both ends ( from srs ecu and seat belt) and ran voltage through each wire individually

The B1900 code indicates a short, so if you have a multimeter, the best way to check it would be to disconnect both ends and measure the resistance between the two pins (it should measure as a open connection) and then each pin separately to chassis ground (which should also both measure as open connections). If that all checks out then you have a bad SRS ECU.