As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, THE HYD SYS PRESS 4 LIGHT ILLUMINATED. AIRCRAFT ABORTED TAKEOFF AND RECYCLED THE AIR DRIVEN PUMP AND ENGINE DRIVEN PUMP SWITCHES AND THE LIGHTS EXTINGUISHED. VISUALLY INSPECTED AND OPERATIONALLY CHECKED THE NR 4 AIR DRIVEN PUMP AND ENGINE DRIVEN PUMP, ALL CHECKED NORMAL.