As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE ICE PROTECTION TEST, PNEUMATIC IN FLIGHT, THE LOCAL WING LIGHT DID NOT ILLUMINATE. 15 SECONDS INTO THE TEST EICAS DISPLAYED WING ANTI-ICE FAIL CAUTION MSG. TRANSFERRED TO NRWC 649-DFW-02152. R & R RELAYS K0528 & K0361. R & R NR 1 & 2 WING ANTI-ICE VLVS. OPERATIONS CHECKED GOOD AMM 20-13-02, 30-11-01 & 30-00-00. NO MSGS ON CMC. LT WING DE-ICE PN 10006491 & SN 200001059.