Passing JNCIP-ENT exam will renew my current JNCIP-SEC certification ?
No, It will not. You have to pass exam in the same track.
Passing JNCIP-ENT exam will renew JNCIP-ENT, JNCIS-ENT, JNCIA-Junos
Passing JNCIP-SEC exam will renew JNCIP-SEC, JNCIS-SEC, JNCIA-Junos
Passing JNCIP-SP exam will renew JNCIP-SP, JNCIS-SP, JNCIA-Junos
I like this chart that visually shows you what is related. The re-certs only work down from the column of related certifications.