As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 AFT FUEL PUMP LIGHT ILLUMINATED DIM WHEN LIGHTS SWITCH WAS IN BRIGHT, DURING DAYLIGHT. AFTER PUTTING LIGHTS SWITCH INTO TEST, NR 2 FUEL PUMP LIGHT WENT OUT. HAPPENED TWICE, MASTER CAUTION NEVER ILLUMINATED. ACFT GROUNDED. REPLACED FUEL SYSTEM MODULE, P5-2, IAW AMM 28-22-43-020-801. OPS CHECKED NORMAL IAW AMM 28-22-43. GROUND VERIFICATION GOOD.