A CREW WORKING IN COORD WITH MAINT CTL TO DEFER A B737-700 ENG VALVE INDICATOR LIGHT DID NOT COMPLETE ALL THE REQUIRED ITEMS FOR A PROPER DEFERRAL. THE ACFT WAS DISPATCHED IN THIS CONDITION.

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WE MET ACFT AT BNA FOR A CREW CHANGE FOR OUR LEG TO SAN. THE CAPT; WHO BROUGHT THE ACFT IN; WROTE UP THE #2 ENG VALVE CLOSED LIGHT REMAINING 'BRIGHT' AFTER ENG SHUTDOWN. WE DISCUSSED THE WRITE-UP; AND HE WENT INTO THE CREW REST AS THE BNA MAINT MEN CAME TO TROUBLESHOOT/FIX THE PROB. BNA MAINT SAID THAT THEY NEEDED TO RUN THE #2 ENG TO CHK THE LIGHT (FO IN THE R SEAT). MAINT STATED THAT IF THE LIGHT REMAINED BRIGHT AFTER SHUTDOWN; THEY WOULD PULL A CIRCUIT BREAKER AND MEL THE WRITE-UP. THEY RAN THE #2 ENG AND SHUT IT DOWN. THE LIGHT WORKED NORMALLY. THEY SIGNED OFF THE WRITE-UP; AND WE FLEW TO SAN. AFTER ENG SHUTDOWN IN SAN; THE #2 ENG CLOSED LIGHT WAS BRIGHT (IDENTICAL TO THE BNA WRITE-UP). WE WERE PARKED WITH NO JETWAY OR PHONE AVAILABLE; SO I TOOK THE LOGBOOK AND MY CELL PHONE TO A RAMP BREAK AREA TO CALL DISPATCH AND MAINT CTL TO ADVISE THEM OF THE REPEAT WRITE-UP. THE ACFT WAS A TERMINATOR. I DISCUSSED THE REPEAT WRITE-UP WITH BOTH DISPATCH AND MAINT CTL. MAINT CTL ADVISED ME TO PULL A CIRCUIT BREAKER AS CALLED FOR PER MEL 73-10. THE INFO GIVEN TO ME BY MAINT CTL MATCHED EXACTLY WHAT BNA MAINT HAD SAID PREVIOUSLY. I COMPLETED THE LOGBOOK; MEL PAPERWORK AS WELL AS PULLING THE CIRCUIT BREAKER WITH THE COLLAR ADDED. I CALLED MAINT CTL 1 MORE TIME FROM THE COCKPIT TO CONFIRM THE CB LOCATION WAS CORRECT AS WELL AS THE CORRECT VERBIAGE FOR THE MEL. MAINT CTL AND I WERE RIGHT ON TRACK WITH THE PROB. THE FIX WAS EXACTLY WHAT I CONTEMPLATED AFTER THE BNA SIGN-OFF AND WHAT MAINT CTL HAD STATED THE NIGHT BEFORE. WE DEPARTED SAN TO ABQ; AND IN CRUISE; I PULLED THE OPC TO REVIEW MEL 73-10 AND DETERMINED THAT ALL THE STEPS HAD NOT BEEN ACCOMPLISHED. WE LANDED; AND I IMMEDIATELY CALLED MAINT CTL TO DISCUSS THE MEL ON THE OTHER ACFT. I TOLD THEM WHAT I HAD DONE AND NOT DONE PER THE MEL. MAINT CTL SAID THE ACFT WAS INBOUND AND THAT MAINT WOULD RE-EXAMINE THE PROB. THE FIX AT BNA AND THE DISCUSSION WITH MAINT CTL AFTER LNDG AT SAN LED ME TO BELIEVE THAT ALL WAS DONE IN ORDER AND PROPERLY. I WAS WORKING THE PROB AND THE FIX WITH MAINT CTL; IE; THE CIRCUIT BREAKER; BUT DID NOT USE THE ACTUAL MEL AS MY PRIMARY RESOURCE; WHICH WOULD HAVE SERVED AS BACK-UP FOR THE MEL WRITE-UP. IN THE FUTURE; I WILL CONFIRM AND USE AS A CONSTANT REF THE MEL ESPECIALLY IN COM BTWN ALL PARTIES.