What was found
RT WING-BODY OVERHEAT DURING CLIMB & CRUISE. PERFORMED CHECKLIST, NO HELP. DIVERTED BACK. PER FLIGHT CREW: RT WING - BODY OVERHEAT CAME ON & STAYED ON, AFTER QRH PERFORMED. DID NOT EXTINGUISH UNTIL THROTTLES RETARDED FOR DESCENT. LIGHT REMAINED OFF FOR DURATION OF FLIGHT. PERFORMED HIGH POWER ENGINE RUNS IAW AMM 71-00-00-700-823-F00. RT WING - BODY OVERHEAT LIGHT ILLUMINATED DURING RUN. THROTTLES TO IDLE. LIGHT EXTINGUISHED. PERFORMED BITE OF WHEEL WELL FIRE, WING - BODY OVERHEAT DETECTION CONTROL MODULE IAW AMM 26-18, TASK 801. SHOWS ONLY CODE 64. RT WING LE & A/C PACK BAY, ALARM. CLEARED MEMORY OF ORIGINAL M237 MODULE. INSTALLED A KNOWN GOOD M237 MODULE (WHEEL WELL FIRE, WING - BODY OVER HEAT MODULE) . PERFORMED HIGH POWER RUN FAULT RETURNED. REMOVED KNOWN GOOD M237 MODULE. REINSTALLED ORIGINAL M237 MODULE IAW AMM 26-18-00-710-801. NO FAULT. CHECKED DUCTS FOR LEAKAGE ON FAULT 64, RIGHT WING LE & A/C PACK BAY IAW TSM 26-18 TASK 802 STEP B.3. NO LEAKS NOTED. MANAGEMENT PERFORMED GVI OF M1763 & M1764 OVERHEAT DETECTORS & OTHERS. NO DEFECTS OR LEAKS NOTED. FOLLOWING FIM 26-81 TASK 802 & USING OVERHEAD LIGHT DID NOT ILLUMINATE DURING RUNS. IAW AMM 71-00-00-700-823-F00.