What was found
DURING CRUISE, WITH 1500 LBS IN THE CENTER TANK, TURNED ON THE CENTER BOOST PUMPS. THE LEFT LOW PRESSURE LIGHT ILLUMINATED AND STAYED ON. THE RIGHT PUMP ILLUMINATED MOMENTARILY & THEN EXTINGUISHED. THE ACFT WAS APPROXIMATELY 2 DEGREES NOSE UP PITCH. ACFT GROUNDED. TROUBLESHOT SYSTEM, AND FOUND LOW PRESSURE WARNING LIGHT WORKS NORMAL AND THE FUEL BOOST PUMP WORKS NORMAL IAW WDM 28-43-11, AND WDM 28-23-11. REMOVED AND REPLACED THE LT CENTER FUEL BOOST PUMP PRESSURE SWITCH AS PRECAUTION. LEAK AND OPS CHECKED GOOD.