What was found
#1 ENGINE COWL VALVE INOP. GROUNDED - YES. FOUND ENGINE #1 ANTI-ICE ENGINE AND WING CONTROL BREAKER OPEN. REF B737-800 WDM 30-11-11, PIN 1 OF D1103P GND WTAI TEMP SOL VLV SHORTED TO GROUND. ISOLATED TO HARNESS MW0311. REMOVED AND REPLACED MW0311 HARNESS IAW B737-800 AMM 73-21-06. #1 ENGINE TAI VALVE OPS CKS NORMAL PER AMM 30-21-11. EEC TEST OPS CKS NORMAL PER AMM 73-21-00-700-804-F00. ACTUATORS TEST OPS CKS NORMAL PER AMM 71-00-00-700-807-F00. POST HARNESS (MW0311) INSTALL, BLEED AIR REGULATOR OPS CKS NORMAL PER AMM 73-21-06-400-801-F00. AVM SYS OPS CKS NORMAL PER AMM 77-31-00-710-801.