What was found
AT FL 240 DURING CRUISE AFT PAX DOOR INDICATION OPEN. PRESSURIZATION NORMAL, OPEN INDICATION REMAINED STEADY. F/A REPORTS DOOR REMAINED CLOSED/LATCHED BUT THE VENT ON THE DOOR WAS OPEN. DIVERTED. LANDING UNEVENTFUL. REMOVED FROM SERVICE. VERIFIED FAULT IN WIRING BETWEEN CONNECTORS 3261-P14 AND J61 WHERE WIRING ENTERS AIRFRAME STRUCTURE. REPLACED SHIELDED PAIR FROM CONNECTOR 3261-P14 PINS A&B TO 3261-J61 PINS 1,2,&3. REMOVED AFT PAX DOOR PROX. SENSOR (LOCK) REF. AMM TASK 52-71-01-000-802. INSTALLED AFT PAX DOOR LOCK SENSOR IAW AMM 52-71-01-400-802 OPS CHECKS GOOD. INSTALLED INTERNAL DOOR HANDLE ON AFT PAX DOOR IAW AMM 52-12-01-400-801 STEP 4A. RETURNED TO SERVICE.