What was found
ENG ANTI-ICE LIGHT ON. LEFT ENG. NO OTHER INDICATIONS. UPDATING PARTS REQUIRED. DEN SHOWS STOCK FOR THE VALVE. REMOVED AND REPLACED THE NR1 ENG INTERMEDIATE MANIFOLD PRESSURE (PI) SENSOR REF AMM 36-11-05-400-801, LEAK CHECK OK. HOWEVER LRU ELECTRICAL OPS TEST FAIL. 36-00130 FAULT CODE. FURTHER T/S REQUIRED. ACCOMPLISHED BY U392731 REPLACED INTEGRATED AIR SYSTEM SYSTEM CONTROLLER REF AMM 21-61-22-400-801 AND OPS CHECKS GOOD. RAN THE #1 ENG AND PERFORMED ENG ANTI ICE TEST REF AMM 30-21-00-710-801. NR1 ENG COWL ANTI ICE OPS CHECK GOOD.