A319
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft
Approach had cleared us to 3000 FT approaching AGNAL fix for RNAV RWY 08. Terrain mapping was on but was not painting terrain in the area. Broken cloud conditions with good visibility underneath. We were both familiar with approach and terrain. Terrain 'pull up' warning suddenly activated so we climbed to 4000. Went back to 3000 by AGNAL and continued approach.Terrain mapping function seemed to not be functioning properly. No terrain was painting when sudden warning occurred.
A319 First Officer reported receiving a false GPWS terrain warning on approach to MDPC.