As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT MAIN TANK AFT FUEL PUMP LOW PRESSURE LIGHT ILLUMINATED IN DESCENT. PLACED AFT PUMP SWITCH TO OFF AS PER APPROPRIATE QRH PROCEDURE. MAINTENANCE FOUND CORROSION ON THE CONNECTOR PINS FOR RIGHT MAIN AFT FUEL PUMP LOW PRESSURE SWITCH S152 AND REPLACED THE PRESSURE SWITCH PER AMM 28-42-11. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.