What was found
AFTER TAKEOFF OF FLIGHT 2924, RIGHT INTAKE LIGHT ILLUMINATED. LIGHT ILLUMINATED 2-3 SECONDS AFTER SWITCH WAS TURNED ON. QRH COMPLETE, AIR RETURN TO DTW. MAINTENANCE REMOVED & REPLACED DE-ICE CONTROL MODULE P/N ON OFF 44730-501, S/N ON L248470, S/N OFF A00342. RAN AC FOR APPROX 15 MIN, ALL CHECKS GOOD AT THIS TIME.