if comm 2000 just been replaced cant see this being at fault unless it is wrong one. ignition should have been off when airbag wires disconnected and re connected. if not this will store fault in ecu. are both connectors clicked right in on airbag? will need to go on diagnostic machine if all wires on comm 2000 are rechecked and light still on ,as it could be a fault elswhere on airbag system.
me
June 2009