As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YEG FLIGHT NR 2315, NR 3 HYDRAULIC PUMP CAUTION LIGHT ILLUMINATED DURING TAXI. DID BUS FAULT RESET SWITCH AND CAUTION LIGHT WENT OUT. MAINTENANCE OPERATED NR 3 HYD PUMP SEVERAL TIMES PER AMM TASK 29-00-00-863-803. NO DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.