What was found
AIRCRAFT WAS NOT GROUNDED: LEFT FORWARD FUEL PUMP CAUTION LIGHT ILLUMINATED ON DEPARTURE. FOUND LEFT FORWARD FUEL PUMP LOW PRESSURE SWITCH CANNON PLUG BACK SHELL 1/2 TURN LOOSE. RETIGHTENED CANNON PLUG. NO CORROSION FOUND IN CONNECTOR. PIN 2 OF CONNECTOR HAS GOOD GROUND, PINS 2 AND 3 OF SWITCH SHOW CLOSED AND OPEN RESPECTIVELY WITH FUEL PRESSURE. LIGHT OPERATES NORMALLY. PUMP RAN WITH NO FAULTS. APPLIED MISSING CPC TO CONNECTOR, PER AMM 28-42-11. BOOST PUMP PRESSURE SWITCH OPS TEST GOOD.