What was found
FWD CABIN ZONE TEMP LIGHT ILLUMINATES ON RECALL, GOES OUT AFTER MASTER CAUTION RESET. ACFT GROUNDED. REF FIM 21-62T814, ACCOMPLISHED PIN TO PIN & PIN TO GROUND RING OUT, MEG CK OF WIRES FROM D15016 AT M2847 TO D3860A, REF WDM 21-61-13. ALSO, SHOOK DOWN ALL EXPOSED WIRING AT E3-3 RACK. NOTHING ABNORMAL NOTED. INSPECTED CONTACTS AT D41027 P/J. CONTACTS APPEAR NORMAL. REPLACED NR 2 CABIN ZONE TEMP CONTROLLER REF MM 21-61-20. INSTALLATION TEST NORMAL IAW SAME. GROUND VERIFICATION SUCCESSFUL REF FIM 21-62T801. NO FAULTS. R & R THE FWD PASSENGER COMPARTMENT TRIM MODULATING VALVE IAW AMM 21-61-21. PERFORMED LEAK TEST, OPS TEST, BITE TEST IAW AMM 21-61-00.