What was found
ON LANDING #2 ENGINE FILTER BYPASS LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED 2 ENGINE FUEL FILTER REF B737-900 AMM 73-11-02 LEAK TESTED NO DEFECTS NOTED. ETOPS SUCCESSFUL GROUND VERIFICATION. CANNON PLUG DP0803 HAD BEEN STRIPPED OUT. REMOVED AND REPLACED J8 HARNESS IAW B737-900 AMM 73-21-06-000-801-F00 AND AMM 73-21-06-400-801-F00. ETOPS GROUND FUNCTIONAL TESTS GOOD IAW AMM EEC TEST AMM 73-21-00-700-804-F00 AND TEST 12 - ACTUATORS TEST AMM 73-21-00-700-804-F00. AIRCRAFT RESTORED TO NORMAL AFTER MAINTENANCE.