As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH TO DTW, RECEIVED LAVATORY SMOKE MESSAGE. QRH FOLLOWED, DECLARED EMERGENCY AND LANDED WITHOUT INCIDENT. SMOKE MESSAGE DETERMINED TO BE FALSE. LAVATORY SMOKE DETECTOR REPLACED IAW BOMBARDIER AMM 26-16-01. OPERATIONALLY CHECKS GOOD.