What was found
WHILE BALANCING FUEL IN CRUISE, AFT LEFT FUEL PUMP WOULD NOT TURN OFF; LOW PRESSURE LIGHT WOULD NOT ILLUMINATE. GROUNDED - YES. PERFORMED VISUAL INSPECTION OF GEAR-WELL AFT LEFT FUEL PUMP AND PRESSURE SWITCH WIRING W/ NO DEFECTS OBSERVED. CONFIRMED CONNECTORS SECURE. PERFORMED FUEL BOOST PUMP OPERATIONAL TEST PER B737-900 AMM 28-22-41-710-801 OBSERVING NO DEFECTS. VERIFIED M/C RECALL AND ANNUNCIATORS OPERATE CORRECTLY W/ RESPECT TO SINGLE/DUAL PUMP LOW PRESS PER TANK. ETOPS GROUND VERIFICATION SUCCESSFUL.