As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE FUEL VALVE CLOSED LIGHT DOES NOT APPEAR TO GO BRIGHT WHEN VALVE TRANSITIONS. ACFT GROUNDED. RANG OUT THE NR 1 ENGINE HMU SWITCH VIA DP1207, PINS 1 AND 3. READS OPEN. SWITCH STUCK OPEN. REMOVED AND REPLACED HIGH PRESSURE SHUTOFF VALVE SWITCH IAW AMM 73-21-09-000-801 AND 73-21-09-400-801.