As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LF AFT MAIN FUEL BOOST PUMP DID NOT ILLUMINATE AFTER ENGINE SHUT DOWN WITH SW POSITIONED TO OFF. GROUNDED - YES. UNABLE TO CONFIRM FAULT. PERFORMED LEFT AFT FUEL BOOST PUMP OPERATIONAL TEST REF B737-800 AMM 28-22-41-710-801. OPERATED BOOST PUMP MULTIPLE TIMES WITH NO FAULTS. PERFORMED GVI OF PRESSURE SWITCH CONNECTOR REF AMM28-42-11-700-801. NO DEFECTS NOTED. ALSO CLEANED AND TREATED REF SAME. RE-ACCOMPLISHED OPERATIONAL TEST OPS NORMAL.